The NBCE Part IV Exam, Explained

NBCE Part IV is the final, performance-based board — where you don't answer multiple-choice questions about medicine, you actually do it: take a history, examine a patient, reason to a diagnosis, and write it up, all under a clock. Here's exactly how it works.

What Part IV actually is

Parts I–III test what you know. Part IV tests whether you can perform in a clinical encounter. It's an OSCE-style practical exam: you rotate through a series of timed stations, each a self-contained scenario, and you're scored on how you handle it — not on picking the right letter.

The eight stations

A Part IV sitting is eight stations: seven patient encounters and one technique station. Each patient encounter is a fresh case — a different chief complaint, a different body system, a different disposition — so you can't coast on one pattern.

A patient station, phase by phase

Every patient encounter runs the same three-phase clock:

The technique station

The eighth station is technique. It's a 2-minute chart review followed by a 14-minute setup block covering multiple adjustment setups. You verbalize and set up each one — patient position, your contact point, stabilization, and line of drive — you don't actually thrust. Precise, spoken setups are what earn points.

What you're tested on

Across the seven encounters, cases are drawn from seven testable content areas:

• Musculoskeletal
• Neurological
• Cardiovascular / Pulmonary
• Gastrointestinal
• Endocrine
• Renal / Urological
• Malignant

And every case resolves to one of three dispositions: treat in the office, requires additional testing or co-management, or urgent referral / outside your scope. Recognizing which one you're in — especially spotting a red flag that means “this isn't yours to treat” — is central to passing.

How it's scored

You're not graded on one right answer. Each patient station is scored across five performance domains, and the technique station across eight. Because the score is spread across domains, a strong candidate who misses the exact diagnosis can still pass by handling the encounter well — and a candidate who “knows the answer” but communicates poorly or documents sloppily can fail. We break the rubric down in How Part IV Is Actually Graded.

What good prep looks like

The exam is a performance, so the only prep that transfers is reps under real timing — running full encounters against the clock, eliciting history, choosing exam maneuvers, committing to a disposition, and writing a 950-character SOAP note before time runs out. Reading about the format (like this guide) gets you oriented; doing it until it's automatic is what gets you through.