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HSE4

Health Services Technician

E-4 (Specialist/Corporal) · Coast Guard

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

You came back from Petaluma with a rating badge and a NREMT-B card, and the first day you report to a working unit as HS3, the crew calls you Doc. Whether you have earned it depends entirely on what you do in the next twelve months. The controlled substance log has your name on it now, and the SOAP note is the clinical record — not a training exercise.

The Honest MOS Read
HS3 (Health Services Technician Third Class, E-4) is the first paygrade in the rating where you are a working clinical provider rather than a supervised striker. You graduated TRACEN Petaluma's HS A-school — roughly 20 weeks integrating EMT-Basic curriculum with military health services administration, pharmacology, and the scope-of-practice framework the COMDTINST M6000.1 Health Services Manual defines — and you reported to a cutter, a sector health services section, a small boat station, or a shore command medical department as a rated petty officer. The badge is on the sleeve. The rating is real. And every day at sick call, the crew is evaluating whether you know what you are doing. The standing medical orders in COMDTINST M6000.1 define the scope of practice you work inside as HS3. They are your license-in-context: what you may assess, what you may diagnose at the working level, what medications you may dispense and under what conditions, what procedures you may perform, and — critically — when you must call the Medical Officer for authorization before you act. The standing orders do not cover everything that walks through the sick call hatch. The crewmember with hypertension elevated above the standing-order threshold, the patient presenting with chest pain, the mental health concern that goes beyond a referral — these are the encounters where you read the standing orders, understand what they authorize, and then make the consult call before you act. The Medical Officer is available by phone, radio, or video consultation. They expect you to call before you exceed the scope, not after. Controlled substance accountability at HS3 is the professional responsibility that carries the highest technical stakes. The HS3 is frequently the accountable officer — or the sole witness — on the unit's controlled substance count. COMDTINST M6000.1 defines the counting procedure, the documentation standard, the storage requirements, and the reporting chain for discrepancies. Every count is witnessed. Every dispense is documented against a patient record and a standing order. Every discrepancy is reported immediately — not resolved silently, not held overnight, not mentioned casually to the HS2 two days later. A single unresolved controlled substance discrepancy under an HS3's log signature becomes a Sector-level phone call and the beginning of a federal records inquiry. The accounting discipline is not bureaucratic friction; it is the professional standard that keeps a scheduled-substance license at the unit. The NREMT-Advanced (NREMT-A) certification is the next clinical credential above NREMT-B, and the HS rating actively encourages HS3s and HS2s to pursue it. The AEMT national exam adds intravenous access, advanced airway management (supraglottic airway devices), expanded pharmacology, and cardiac monitoring to the NREMT-B clinical scope. The additional capabilities directly expand what you can do for a critically injured or ill crewmember between the unit and definitive care — particularly on an FRC or WMEC four days from port. Start building toward NREMT-A within the first six months after Petaluma; the HS2 SWE bibliography will expect it. The EER (Enlisted Employee Review) under CIM 1610-series is the performance evaluation that drives advancement in the CG enlisted structure. Your first EER as an HS3 sets the baseline trajectory the senior HS and the HS community management read when the SWE final multiple is calculated. The EER evaluates military performance, technical competence, clinical quality (for HS), professional bearing, and leadership potential. The numeric marks and the written narrative both matter. An HS3 who produces clean SOAP notes, a clean controlled substance log, a stocked and organized medical department, and a competent patient encounter leaves no room for anything but strong marks. An HS3 who does the minimum — adequate notes, adequate counts, adequate availability — gets adequate marks, and adequate marks in a competitive rating mean a delayed SWE eligibility date. The CG's small-service operational context shapes the HS3 experience differently than the Navy HM rating at a major military treatment facility. On an FRC on a 60-day Caribbean patrol, you may be the only qualified health services provider aboard for the full patrol, running sick call under standing orders with the Medical Officer available by satellite telephone. A laceration, a spine injury from a line snap, an acute abdomen — these are the real cases you will encounter, and the standing orders define what you can do for each one and when you must call. The intellectual discipline of knowing exactly where the standing orders' scope ends is what keeps a patient alive until the medevac arrives.
Career Arc
  • 01Graduate TRACEN Petaluma HS A-school — NREMT-B current, rating badge on, report to first HS3 billet.
  • 02Stand up primary sick call independently under standing medical orders — first 60-90 days are the technical confidence-building window.
  • 03NREMT-A study plan built and scheduled within 6 months of returning from Petaluma.
  • 04First EER cycle as HS3 — clinical performance, controlled substance accountability, medical records management, and leadership potential all rated.
  • 05HS2 SWE bibliography pulled from the CG Institute; study schedule on the calendar aligned with the March/August SWE cycle.
  • 06C-school or advanced training opportunities identified — tactical combat casualty care, advanced clinical courses — discussed with the senior HS.
  • 07Reenlistment / EAOS decision point: career HS track (IDHST path, full six-year commitment), lateral transfer, or separation.
Common Screwups
  • ×Treating a patient outside the scope of the standing medical orders in COMDTINST M6000.1 without a documented Medical Officer consult. The standing orders are the scope. What is not explicitly authorized requires a call before you act. The HS3 who improvises a treatment beyond their standing-order authority and the patient deteriorates has no documentation defense — and the investigation names the HS3 who acted without authorization.
  • ×Co-signing a controlled substance witness count you did not personally witness. The investigating officer asks both named witnesses to describe the count independently. If the accounts diverge — different total counts, different sequence, different time — both witnesses are now subjects of the investigation, not witnesses. The career consequence is typically UCMJ or CG-equivalent administrative action and permanent loss of trust in a rating that is entirely built on trust.
  • ×Sending a crewmember back to duty with an undocumented decision. In the CG, the disposition decision — duty, limited duty, quarters, medevac — must be documented in the patient's medical record at the time of the encounter. A crewmember sent back to duty with a verbal 'you're fine' who collapses three hours later has no documentation supporting the return-to-duty assessment. The investigation runs back to the HS3 who made the call and did not write it down.
  • ×Letting the unit formulary or emergency medication stock expire because the reorder cycle slipped during a busy operational tempo. The first underway with a patient in anaphylaxis and no epinephrine in the kit is when the CO discovers the supply management failure. The discovering moment is not gentle. The HS3 who can say 'the last reorder request was submitted on this date and is still pending' is in a difficult position. The HS3 who cannot say that is in a worse one.
  • ×NJP, DUI, or any financial misconduct. The HS rating is a small community and the Coast Guard is a small service. An NJP at the HS3 level follows the service record through every SWE cycle, every EER narrative, and every C-school endorsement. The controlled-substance accountability of the rating makes any substance-related misconduct particularly career-limiting — the senior HS community management does not overlook it.

A Day in the Life

  • 0530-0630PT — cardiovascular and strength training per the unit PT plan. The HS3 sets the standard for physical readiness in the department; the non-rates are watching.
  • 0630-0700Shower, chow, uniform inspection. Medical department uniform standard: clean, pressed, medical insignia visible. The crew sees the HS before sick call opens.
  • 0700-0730Sick call bay prep: restock consumables from the formulary, verify AED and O2 status, run controlled substance morning count witnessed by the duty HS or a designated petty officer, document the count.
  • 0730-0800Controlled substance morning count completed and logged. Review the appointment log for the day — follow-up visits, pre-deployment screening appointments, occupational health checks.
  • 0800-1000Sick call open. Patient intake, vital signs, SOAP documentation, standing-order treatment, and disposition for each patient. Consult the Medical Officer before acting on any case outside the standing orders. Document the consult.
  • 1000-1100Post-sick call: close the SOAP notes, update the medical records system, restock the treatment bay, and check any pending pharmaceutical reorders against the formulary par level.
  • 1100-1200Administrative time — medical equipment maintenance log review, deployment screening completion tracking, HIPAA documentation audit, or SWE study depending on where the priority falls.
  • 1200-1300Chow. Back in the department by 1300 unless the duty section bill specifies otherwise.
  • 1300-1500Training, C-school study, or unit-directed training evolution. Medical emergency bill drill when scheduled. NREMT-A study materials on days with no competing priority.
  • 1500-1545Afternoon controlled substance count — witnessed, documented. Verify the sick call bay is secured and equipment is properly stored.
  • 1545-1700Administrative close: update the unit medical readiness tracking (deployment screen completion, duty restrictions roster, pending referrals). Brief the senior HS on any patient of concern before end-of-day.
  • 1700-2100Off-watch time subject to duty section. NREMT-A study, SWE bibliography review. Duty section HS3s provide after-hours sick call coverage per the unit sick call bill.
  • Field noteUnderway: controlled substance counts continue on schedule regardless of sea state. Sick call held at 0800 and 1600 underway unless a casualty event changes the schedule. The HS3 on an FRC without an HS2 is running sick call independently with the Medical Officer on radio consult. Every encounter is documented same-day, no exceptions.

Weekly Cadence

The HS3 week is anchored by the daily sick call cycle and the controlled substance accountability routine, layered over a weekly training and administrative structure. Monday opens with the most recent weekend's duty section handover — any sick call visits from the weekend are reviewed, outstanding follow-up patients are scheduled, and the formulary status is updated. The week's training calendar is confirmed with the unit training officer: quarterly medical emergency bill drill, monthly BLS currency refresher, and whatever occupational health events are on the unit schedule. Mid-week tends to be the administrative peak: deployment screening appointments, occupational health surveillance entries, pharmaceutical reorder requests, and the EER input prep the senior HS assigns. If the unit is preparing for a major underway, the pre-deployment medical screening workload compresses into the week before departure — screening every crewmember, documenting the results, and identifying any duty-limiting conditions before the ship leaves the pier. The HS3 who builds a deployment screening checklist and owns the schedule is the one who arrives at departure with a complete screened roster. The HS3 who starts the screenings the week before and finds an incomplete list on departure day is in a difficult position. Friday afternoon is the systematic close: controlled substance end-of-week audit, medical records week's documentation complete and signed, equipment maintenance log current, and the weekend duty section HS briefed on any patients of concern and the sick call bill. If the unit has an HS non-rate, the week closes with a brief counseling or check-in on PQS progress and A-school preparation. The HS3 who invests five minutes per week in the striker's development is building the backup that makes sick call coverage on a duty weekend less fragile.

Key Skills — How to Drill Each

  1. 01
    Run a complete sick call patient encounter — history, physical exam, SOAP documentation, standing-order-driven treatment, and disposition — without the HS2 rewriting the note.
    The encounter starts when the patient sits down and ends when the disposition is documented and the note is signed. History: chief complaint in the patient's own words, onset, duration, character, associated symptoms, medication list, allergies, relevant past history. Physical exam: targeted to the chief complaint — vital signs are mandatory on every encounter. Assessment: your working clinical impression within the standing-order framework. Plan: what the standing orders authorize, what you dispensed, what follow-up you scheduled, and whether you consulted the Medical Officer. Disposition: duty, limited duty, quarters, referral, or medevac — documented with the rationale. The HS2 reads your notes at the end of every week. Notes that read like a complete clinical story do not get rewritten. Notes that read like a checklist get a red pen.
  2. 02
    Manage the unit controlled substance log to COMDTINST M6000.1 standards — every count witnessed, every dispense documented, every discrepancy reported immediately.
    The controlled substance log is a federal document from the moment it is opened. Every entry has four elements: the date and time, the item, the quantity dispensed or verified, and the names and signatures of both the accountable officer and the witness. Build a documentation discipline where you write the log entry before moving to the next task — not after the encounter, not at the end of the shift. A log entry written from memory two hours later is a reconstructed record, not a contemporaneous one. If the count is off, stop immediately, document the discrepancy in the log, and call the senior HS before doing anything else.
  3. 03
    Perform NREMT-B/AEMT-level emergency treatment on a real or drill casualty — airway management (BVM, oropharyngeal airway), IV access and fluid resuscitation, hemorrhage control (tourniquet, wound packing), and cardiac monitoring.
    Emergency treatment skills degrade without deliberate practice. Run a monthly self-drill: tourniquet application to the correct anatomical position with one hand in under 60 seconds, BVM mask seal on a training manikin for 2 minutes without break, proper IO needle placement site identification. For IV access and cardiac monitoring — drill the setup sequence, the anatomical landmarks, and the documentation standard. When a real emergency hits, your hands run the drill they have done before. The crewmember on the deck does not benefit from hands that are working through the sequence for the first time.
  4. 04
    Operate and maintain the unit's medical equipment — AED, cardiac monitor, ventilator (if equipped), glucometer, IV pump, suture tray, dental emergency kit — including calibration records and expiration checks.
    Each piece of equipment has a maintenance schedule documented in the medical equipment log and referenced in COMDTINST M6000.1. Build an equipment maintenance calendar at the start of each month: AED battery indicator check weekly, electrode pad expiration check monthly, glucometer calibration check per the manufacturer's schedule, IV supply expiration audit monthly. The district medical officer who arrives for an inspection asks for the medical equipment log before they ask for the patient records. A log with gaps is a finding that carries the senior HS's name and the HS3's.
  5. 05
    Maintain the HIPAA-compliant release process, the pre-deployment medical screening, and the MEDPROS-equivalent CG medical records system entries.
    The pre-deployment medical screening identifies crewmembers with duty-limiting conditions before departure, not after. Pull the deployment screening checklist from COMDTINST M6000.1 — it covers dental readiness, immunization currency, prescription medication continuity, and mental health screening protocols. Every screening is documented in the medical record with the date, the findings, and the disposition. The HIPAA release process requires a signed authorization before you disclose any PHI to anyone outside the treatment team, including the crewmember's family, the command chain (except for need-to-know fitness-for-duty purposes), and outside healthcare providers who are not part of the direct treatment relationship.
  6. 06
    Train non-rates and crew members on BLS/CPR, Stop the Bleed, and the unit's medical emergency bill.
    You are the training officer for the unit's basic medical preparedness program. Schedule BLS/CPR refresher training on the unit training calendar — not as a one-time annual checkbox, but as a recurring quarterly event with a 20-minute hands-on skills station. Stop the Bleed training covers tourniquet application, wound packing, and direct pressure; it takes 30 minutes and every crewmember is measurably better prepared for a deck casualty afterward. The medical emergency bill assigns specific roles — who calls Sector, who brings the kit, who provides airway support — and every crewmember should know their role before the underway departure.

Manuals & References — What Chapters Matter

  • COMDTINST M6000.1 (current series) — Coast Guard Health Services Manual
    The standing medical orders are in here, and the standing orders are the scope of your practice as HS3. Know which conditions are standing-order-authorized for treatment, which are standing-order-authorized for evaluation and referral, and which require Medical Officer authorization before you act. Verify the current revision against the CG Directives System — the standing orders section is updated periodically and the version you graduated Petaluma with may not be the current version at your unit. Request the current version from the senior HS on arrival.
  • NREMT-Advanced (NREMT-A) Candidate Handbook — available at nremt.org
    The AEMT cognitive exam tests advanced airway management, intravenous and intraosseous access, cardiac monitoring, advanced pharmacology, and medical/trauma assessment above the NREMT-B baseline. The certification directly expands your clinical capability at sea, where the distance from definitive care makes advanced interventions matter. Build the NREMT-A study plan around the current exam blueprint from nremt.org, not a prep guide for a previous version of the exam.
  • Joint Trauma System (JTS) Clinical Practice Guidelines — jts.health.mil
    The JTS CPGs are the evidence-based protocols the CG medical program maps to for trauma and emergency management. As HS3, the CPGs most relevant to your daily work are TCCC Guidelines, Hemorrhage Control, Airway Management, and Pain Management in Remote Environments. These are publicly available at jts.health.mil and represent the clinical standard your performance is measured against during mass-casualty and trauma drills. Read the primary CPGs; do not wait for a training event to see them for the first time.
  • HIPAA Privacy Rule — 45 CFR Parts 160 and 164
    Your name is on the sick call records. Under 45 CFR 164.530, you have both a right to know the unit's HIPAA policies and a compliance obligation. The minimum-necessary standard in 45 CFR 164.502(b) means you disclose PHI only to the people who need it for the treatment decision at hand. The district medical officer's annual HIPAA audit reviews records access logs and disclosure documentation — your records are part of the audit.
  • CG Coast Guard Rating Knowledge SWE Bibliography for HS — current edition from the CG Institute
    The Servicewide Examination (SWE) for HS2 eligibility is built around a published bibliography that the CG Institute updates each cycle. Pull the current HS SWE bibliography from the CG Institute within 90 days of returning from Petaluma. The bibliography covers clinical subjects, health administration, medical laws and ethics, COMDTINST M6000.1 content, military requirements, and leadership doctrine. SWE scores feed the final multiple that determines advancement eligibility — the bibliography is the test outline.
  • CIM 1610-series — Coast Guard Enlisted Employee Review
    The EER is the performance evaluation system that drives CG enlisted advancement. CIM 1610 series governs the evaluation periods, the marking scale, and the write-up standards. Read the section that describes the numeric marking descriptors so you understand what 'exceeds standards' looks like in the evaluator's language — and so you can recognize what clinical behaviors generate exceeds-standard marks versus standard marks. The senior HS will discuss your mid-period performance with you; understand the evaluation system before that conversation.

Standards — How to Hit Each

  • NREMT-B current; NREMT-A in progress or earned — the A-level certification is the HS2 differentiator.
    Schedule the NREMT-A exam date within 6 months of returning from Petaluma. The AEMT exam requires the same Pearson VUE testing center registration as NREMT-B. Study plan: 90-120 days of structured preparation using the current exam blueprint, a current AEMT textbook (National EMS Education Standards-aligned), and practice exams. The cognitive exam adds IV access, cardiac monitoring, advanced airway, and expanded pharmacology to the NREMT-B content weight. The psychomotor exam adds patient assessment/management at the AEMT level.
  • Controlled substance count clean every cycle — witnessed, documented, no unresolved discrepancies on your watch.
    The clean count standard has one absolute requirement: count independently before comparing to the log. Do not let the previous count result anchor your independent count. If the numbers do not agree, do not recount until they do — report the discrepancy immediately. The practice of 'counting until it's right' is what converts a legitimate transposition error into an unexplained pattern. The investigating officer distinguishes between an HS3 who reported a discrepancy immediately and one who reported it after it persisted for two days.
  • EER marks at or trending above unit average; HS2 SWE bibliography pulled and study schedule built.
    Request your mid-period counseling proactively — do not wait for the senior HS to schedule it. Bring documentation of your performance: SOAP note quality, controlled substance accountability record, equipment maintenance compliance, training events conducted. The EER mark is the senior HS's professional judgment informed by observable evidence. Give them evidence that points one direction.
  • CG PFT passed every cycle; body composition compliant with current COMDTINST M1020.8.
    The HS3 who fails the PFT at the unit that employs them as the primary medical provider sends an uncomfortable signal. Schedule a personal fitness assessment 90 days before the official PFT window, identify any deficiencies, and correct them with a structured training plan before the official test. If body composition is the constraint, the nutrition and fitness resources the medical department helps the rest of the crew with are also available to you.
  • Medical emergency bill: every crewmember has a role, drills are on the training calendar and documented.
    Write the medical emergency bill within 60 days of checking in. Assign roles — first responder, medical kit carrier, communication officer, Medical Officer contact — across the watch section. Brief the bill at the next all-hands training. Run the drill quarterly and document it in the training log. The first time a real emergency happens, the medical emergency bill is either a running start or a starting-from-zero problem. The crew that has run the drill looks different than the crew that has not.

Technical Mistakes — Concrete Consequences

  • Treating a patient outside the scope of the standing medical orders without a documented Medical Officer consult.
    The standing orders in COMDTINST M6000.1 define your authorized scope of independent practice. Acting outside that scope without Medical Officer authorization is practicing medicine without a license in the context of a federal health services framework. If a patient is harmed by an unauthorized treatment, the HS3's documentation — or lack of it — is the primary evidence in both the adverse patient event review and any subsequent legal proceeding. The COMDTINST M6000.1 standing orders section is specific enough to cite by the section number the Medical Officer will ask you about.
  • Skipping the SOAP note because the case seemed minor.
    The crewmember with a 'minor headache' who returned three days later with a BP of 220/140 and was medevaced with a hypertensive emergency generated a line-of-duty medical inquiry. The HS3 who did not document the initial sick call visit because it 'seemed minor' has no record that the early hypertension was seen and addressed. The investigation asks whether the standard of care was met. Without documentation, there is no way to demonstrate that it was. 'It seemed fine' is not documentation.
  • Co-signing a controlled substance witness count without personally verifying the count.
    This is the most common mechanism for a controlled substance accountability breach. HS3 is busy, the HS2 is trusted, and co-signing the log as a witness without actually counting seems harmless — until the DEA or district medical officer audit reveals a discrepancy that has been accumulating under witnessed counts that were never independently verified. Both names on the log are subjects of the investigation. Career consequence: UCMJ or equivalent, permanent loss of controlled-substance responsibility privileges, and likely adverse separation if the discrepancy is material.
  • Sending a crewmember back to duty without documenting the return-to-duty decision in the medical record.
    In the CG, an undocumented duty restriction or duty release is a medical-legal void. The crewmember who re-presents to sick call worse than when they left, or who is injured on duty following an undocumented clearance, creates a line-of-duty investigation that runs directly to the HS3's undocumented decision. The standard: every encounter has a documented disposition with the clinical rationale. 'Cleared for full duty, no restrictions' is a complete note. 'Sent back to work' is not.
  • Briefing a Medical Officer consultation request with inadequate clinical data — calling for guidance without a full set of vitals, a current medication list, and a clear chief complaint.
    The Medical Officer making a remote treatment decision from a ship at sea depends entirely on the quality of the clinical information the HS3 provides. A call that opens with 'crewmember feels bad and has a headache' without current vitals, onset, duration, associated symptoms, medication list, and allergies forces the Medical Officer to interview the patient through you — adding delay and uncertainty to a time-sensitive clinical decision. The Medical Officer who receives an incomplete clinical picture makes a less informed decision. If the decision is wrong because the data was wrong, the investigation asks who provided the incomplete information.

Career Decisions at This Rank

  • NREMT-A: timing relative to HS2 SWE
    The NREMT-A (AEMT) certification is not explicitly required for HS2 advancement eligibility under the current SWE framework, but the rating actively encourages it and senior HS community managers view NREMT-A-certified HS3s as more competitive for follow-on billets that build toward IDHST eligibility. The question is timing: prioritizing the SWE bibliography first (for advancement rate) versus pursuing NREMT-A concurrently (for clinical development and billet competitiveness). The answer for most HS3s is to begin NREMT-A study within 6 months of Petaluma and schedule the exam for the 12-18 month mark, while the SWE bibliography study runs in parallel. The two study loads are complementary, not competing.
  • Reenlistment versus separation at first EAOS
    Most HS3s face their first EAOS (End of Active Obligated Service) decision somewhere in the 4-6 year mark. The career case for staying is strong if you are on an IDHST trajectory: the Independent Duty qualification opens doors to billets — senior-HS-of-record on an NSC, sector health services section leadership, TRACEN Petaluma cadre — that are materially differentiated from the civilian equivalent. The civilian healthcare market for AEMT-certified, IDHST-eligible candidates is also strong, particularly in EMS, occupational medicine, and industrial medicine sectors. The honest analysis: if you have NREMT-A, a clean controlled substance record, competitive EERs, and an IDHST path on the books, the career case for staying is excellent. If the operational tempo, the restricted duty locations, or the pay gap is the constraint, the civilian market is strong enough to absorb you — but the IDHST credential only comes from staying in long enough to earn it.
  • Afloat versus shore assignment preference at first PCS
    The IDHST qualification requires sea time — the specific requirements are defined in COMDTINST M6000.1 and verified through the district medical officer's endorsement process, and they require documented underway time as a qualified HS. Shore assignments provide clinical volume, supervised experience, and a more structured work-life schedule, but they do not accumulate the sea time the IDHST eligibility requires. The HS3 who spends the first two assignments ashore has clinical depth but limited sea time and a delayed IDHST clock. The HS3 who spends both assignments afloat on FRCs or WMECs has more sea time, more clinical independence experience, and a faster IDHST clock — at the cost of a harder operational tempo and more time away from home port. Discuss the tradeoff explicitly with the senior HS and the district enlisted detailer before submitting assignment preferences.
  • NRP (National Registry Paramedic) or nursing bridge as a long-range credential track
    The NRP and nursing bridge programs are the two primary post-CG credential paths for experienced HS petty officers. NRP adds to the AEMT scope: 12-lead cardiac interpretation, RSI (rapid sequence intubation in many state scopes), expanded pharmacology, advanced cardiac life support. It is achievable from the HS3 level in most states if the 48-72 clinical hours and AEMT prerequisite are met. Nursing bridge programs (typically ASN or BSN programs that credit military clinical hours) are a longer investment but open the full RN scope and the compensation structure that comes with it. Starting the research on both at the HS3 level — what state license is achievable from your current duty station, what community college or online programs have military articulation agreements, what the prerequisite timeline looks like — means you are making an informed decision at the HS2 or HS1 EAOS point rather than a reactive one.

How the Seat Varies by Unit Type

  • Fast Response Cutter (FRC / Sentinel-class, 154 ft)
    The FRC HS3 is typically the sole qualified HS aboard during a patrol. The cutter's crew of approximately 24 generates the full range of primary care presentations — lacerations, musculoskeletal injuries, respiratory infections, dental emergencies, mental health concerns — and the HS3 manages all of them under standing medical orders with the Medical Officer on radio or satellite phone consult. FRC patrols in the Caribbean Basin and Eastern Pacific run approximately 84 days in published CG operations; a 84-day patrol as the sole HS with a trauma case at day 50 and no immediate MEDEVAC available is the assignment that separates the HS3 who trained for it from the one who did not.
  • Sector Health Services Section
    A sector health services section provides primary care to the sector command's population, which can span several thousand personnel across multiple subordinate commands. The HS3 working a sector health services section sees higher clinical volume, more supervised complex cases, and a Medical Officer (or Physician Assistant / Nurse Practitioner contracted provider) present in the building. The tradeoff is sea time accumulation — sector assignments are predominantly shore billets, and the IDHST clock runs slower without documented underway time.
  • Medium Endurance Cutter (WMEC — Reliance or Famous class)
    The WMEC HS3 works in a slightly larger medical department than the FRC — typically an HS2 or HS1 as the senior HS plus one or more HS3s — on patrols that cover the Atlantic, the Gulf of Mexico, and the Caribbean. The WMEC patient population is larger (crew of 75-100 on the 210-ft and 270-ft WMECs), the patrol duration is longer, and the range of clinical presentations is wider. The HS3 on a WMEC gets more supervised experience from a senior HS before taking independent clinical responsibility, which builds technical confidence faster than the singleton-HS FRC experience.
  • National Security Cutter (NSC / Bertholf-class WMSL)
    The NSC HS3 works in the CG's most capable afloat medical department — an HS1 or HSC as the senior HS, potentially with an HS2 and one or more HS3s, plus the possibility of an assigned medical officer on extended deployments. NSC patrols include INDOPACOM deployments that have become regular features of CG operations, and the patient population spans a crew of approximately 148 plus embarked personnel. The NSC medical department has better equipment, more clinical oversight, and more complex cases — and it offers the HS3 an early view of what an IDHST-level operation looks like at the senior level.
  • Small Boat Station
    A small boat station with an organic HS3 often puts the HS3 in a near-independent practice environment with sector health services section support rather than an on-site senior HS. Sick call visits come from a small population (20-40 crewmembers at many stations), the Medical Officer consult is by phone, and the HS3 is the face of the medical department. The independence is real but so is the isolation — there is no senior HS down the passageway to check the SOAP note draft or verify the controlled substance count. The HS3 assigned to a small boat station as the primary HS needs to have the documentation and accountability discipline already built, not developing.

What Good Looks Like at This Rank

The good HS3 is the petty officer the XO trusts to hold sick call on a weekend duty day because the SOAP notes are clinically complete, the controlled substance log is auditable without explanation, and the crewmember has never been sent back to duty without a documented disposition and clinical rationale. The senior HS does not rewrite the notes. The Medical Officer consult requests come in with full vital signs, a current medication list, and a clear clinical question — not a request for the Medical Officer to gather the information remotely. The good HS3 has built an equipment maintenance calendar that runs without reminder: AED battery checked weekly, electrode pads current, medical kit stocked to par before every underway, cardiac monitor calibrated per the maintenance log schedule. The unit training officer's medical emergency training slots are filled because the HS3 scheduled them and ran them — not because someone reminded them to. The non-rates and junior crew members know their roles on the medical emergency bill because the HS3 drilled the bill quarterly and kept the record. What the senior HS community sees in the EER narrative is an HS3 who exceeded the controlled substance standard, documented every encounter with clinical completeness, expanded their clinical scope by pursuing NREMT-A, and trained the crew without being directed to. The HS1 at the senior unit is already asking the district medical officer which follow-on billet will build this HS3 into an Independent Duty candidate in the next assignment cycle.

Preview — The Next Rank

HS2 (Petty Officer Second Class, E-5) is the rank where the Coast Guard medical machine trusts you to be the primary — and frequently the only — qualified provider on a deployed cutter without a Medical Officer in the building. The scope expands: the HS2 standing orders under COMDTINST M6000.1 authorize a broader clinical range than the HS3 orders, including minor surgical procedures, expanded pharmacological management, and a more independent consult framework with the Medical Officer. The controlled substance accountability at HS2 is the senior-accountable-officer role, not the witness role — you are the one the district medical officer calls when something is wrong with the count. The IDHST (Independent Duty Health Services Technician) course at TRACEN Petaluma is the career goal the HS2 assignment is meant to build toward. The IDHST qualification authorizes independent medical practice on vessels without a physician — the senior clinical scope in the enlisted HS career. The prerequisites involve sea time, NREMT-A, Medical Officer endorsement, and command recommendation. Start accumulating sea time deliberately and tracking it formally at the HS3 level — the IDHST clock is running whether you are watching it or not. At HS2 you also start writing EER inputs on the HS3s and non-rates below you. The first time you sit down to write an HS3's evaluation narrative, the CIM 1610-series EER standard feels different from the inside than it did when someone was writing yours. The senior HS community management reads your inputs across multiple cycles, and the writing discipline you build at HS2 informs the perception of your potential for the HS1 and HSC levels where the department's performance rests on the quality of your evaluations.
FAQ

HS E4 — Frequently Asked Questions

Q01What does a E4 HS (Health Services Technician) actually do?
You came back from TRACEN Petaluma's HS A-school — roughly 20 weeks of EMT-Basic and military health-services curriculum — with the rating badge sewn on and a National Registry certification in your service record.
Q02What's the most important thing to know as a E4 HS?
You came back from Petaluma with a rating badge and a NREMT-B card, and the first day you report to a working unit as HS3, the crew calls you Doc.
Q03What does a typical day look like for a E4 HS?
Time-blocked day at the E4 HS rank tier: 0530-0630 PT — cardiovascular and strength training per the unit PT plan. The HS3 sets the standard for physical readiness in the department; the non-rates are watching, 0630-0700 Shower, chow, uniform inspection. Medical department uniform standard: clean, pressed, medical insignia visible. The crew sees the HS before sick call opens, 0700-0730 Sick call bay prep: restock consumables from the formulary, verify AED and O2 status, run controlled substance morning count witnessed by the duty HS or a designated petty officer, document the count,…
Q04What mistakes get E4 HS soldiers fired or relieved?
Treating a patient outside the scope of the standing medical orders in COMDTINST M6000.1 without a documented Medical Officer consult. The standing orders are the scope. What is not explicitly authorized requires a call before you act. The HS3 who improvises a treatment beyond their standing-order authority and the patient deteriorates has no documentation defense — and the investigation names the HS3 who acted without authorization;…
Q05What career decisions matter most at the E4 HS rank tier?
NREMT-A: timing relative to HS2 SWE — The NREMT-A (AEMT) certification is not explicitly required for HS2 advancement eligibility under the current SWE framework, but the rating actively encourages it and senior HS community managers view NREMT-A-certified HS3s as more competitive for follow-on billets that build toward IDHST eligibility. The question is timing: prioritizing the SWE bibliography first (for advancement rate) versus pursuing NREMT-A concurrently (for clinical development and billet competitiveness).…
Q06What's next after E4 for a HS (Health Services Technician) in the Coast Guard?
HS2 (Petty Officer Second Class, E-5) is the rank where the Coast Guard medical machine trusts you to be the primary — and frequently the only — qualified provider on a deployed cutter without a Medical Officer in the building.
Q07What manuals and regulations does a E4 HS need to know cold?
COMDTINST M6000.1 (current series) — Health Services Manual. The standing medical orders and the scope-of-practice framework you work inside every day are in here.; NREMT-Advanced (NREMT-A) candidate handbook — the next certification above NREMT-B that the rating encourages and the HS2 SWE bibliography expects. Pull the current exam blueprint from nremt.org.;…

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Published by the Honest MOS Editorial DeskVerified against DoD/.gov sourcesUpdated May 2026Editorial standards