Physician Assistant (PA) School Admissions in the USA (CASPA and Patient-Care Hours)

What PA admissions look like

Physician Assistants (PAs) are licensed clinicians who diagnose, treat, and prescribe as part of a healthcare team. PA programs are graduate (usually master's-level) programs, and most US programs accept applications through CASPA, the Centralized Application Service for Physician Assistants, run by PAEA (the Physician Assistant Education Association).

Three things define PA admissions more than anything else: the CASPA centralized application, substantial hands-on patient-care or healthcare experience, and a set of science prerequisite courses. Standardized tests play a smaller and less uniform role than in medical or law admissions.

This guide explains how the process works. It does not quote required hour counts, prerequisite GPAs, fees, or deadlines as fixed facts, because those are set by individual programs and vary widely. Verify the current details on CASPA and each program's official page.

The CASPA centralized application

CASPA lets you complete one application — coursework, experiences, essays, references, and transcripts — and submit it to multiple PA programs. CASPA then verifies your application (including re-checking your coursework) before transmitting it to your selected programs, which is why building in time for verification matters.

Many PA programs review on a rolling basis, so completing and submitting your CASPA application earlier in the cycle can mean being evaluated while more seats remain — though it never guarantees an outcome. Programs frequently add their own supplemental application, essays, or interview requirements on top of CASPA.

• Enter coursework, experiences, essays, and references once in CASPA
• Request official transcripts for CASPA verification
• Document patient-care and healthcare experience hours carefully
• Select your PA programs and submit for verification
• Watch for program-specific supplements, tests, and interview invites
• Allow time for CASPA verification before deadlines

Patient-care and healthcare experience hours

The hallmark of PA admissions is the expectation of significant, hands-on healthcare experience before you apply. Programs often distinguish between direct patient-care experience (roles where you actively work with patients) and broader healthcare experience (roles in a clinical setting with less direct hands-on care), and many set minimum hour expectations.

The required number of hours and what 'counts' vary substantially from program to program — some emphasize a high bar of direct patient-care hours, others count a wider range of experiences. Track your hours and roles precisely as you accumulate them, and confirm exactly what each program requires on its official admissions page rather than assuming a single standard.

Common experience roles include working as a certified nursing assistant, medical assistant, EMT/paramedic, scribe, patient-care technician, or similar — but acceptance of each role is program-specific.

Prerequisites and standardized tests

PA programs typically require a set of prerequisite science courses, which commonly include anatomy and physiology, general and organic chemistry or biochemistry, microbiology, and statistics — though the exact list and minimum grades vary by program. Check each program's prerequisite list early, because completing missing courses can add a year to your timeline.

Standardized testing is not uniform. Some PA programs require the GRE, some are test-optional, and some use program-specific assessments such as the PA-CAT or a situational-judgement test like Casper. Because policies differ widely, confirm each program's testing requirements on its official page so you can plan your timeline. Treat any GRE score-recency window as program-specific.

How PA differs from the MD/DO route

PAs and physicians are different professions with different training. Physicians (MD or DO) complete medical school and residency and apply through AMCAS (MD) or AACOMAS (DO), with the MCAT as the standard admission test. PA students complete a graduate PA program and apply through CASPA, with patient-care experience and prerequisites weighted heavily and standardized testing less central.

These are distinct careers with different scopes of practice, training lengths, and admission machinery — not a ranking. If you are weighing them, look at the day-to-day role, the length and structure of training, and the admission requirements of each, and verify all specifics on the official sources for the route you choose.

Across every PA program, confirm hour requirements, prerequisites, test policies, fees, and deadlines on CASPA and each school's official page for the current cycle.

• PA: graduate PA program via CASPA; experience + prerequisites central
• MD: medical school + residency via AMCAS; MCAT standard
• DO: osteopathic medical school via AACOMAS; MCAT standard
• PA testing varies (GRE / PA-CAT / Casper / none) — confirm per program