Part IV vs Part III: What Actually Changes
6 min read·Updated September 1, 2026
If you just came off Part III, the instinct is to prep Part IV the same way — review, memorize, repeat. That instinct will cost you. Part III asks whether you know the clinical answer. Part IV asks whether you can perform the clinical encounter. Different question, different training.
What actually changes
| Part III | Part IV | |
|---|---|---|
| Format | Written / computer-based clinical questions | Live, timed practical stations (OSCE-style) |
| What's tested | Clinical knowledge and reasoning | Performance — history, exam, decisions, communication, documentation |
| How you answer | Select the correct response | Do it: interview a standardized patient, examine, decide, write it up |
| Scoring | Right vs. wrong | Points spread across grading domains — no single “answer” |
| Clock | Per exam | Per phase: 2-min door note, 14-min encounter, 6-min SOAP |
Why “knowing it” isn't enough anymore
On Part IV you can identify the diagnosis in your head and still lose points — because the grade is spread across five domains: did you gather the right history, run the right exam, decide the right disposition, communicate it clearly, and document it well? A candidate who “knows the answer” but interviews awkwardly, examines randomly, or writes a panicked note underperforms one who runs a clean, ordinary encounter.
How your prep has to shift
- From reading to reps. Re-reading conditions trains recall — one domain. Running full timed encounters trains all five.
- Practice out loud. Communication is graded and can't be faked cold. Rehearse the report of findings until it's natural.
- Write under the cap. Documentation is a domain; practice the 950-character SOAP note against the clock.
- Add technique. Part III had no technique station; Part IV does, and it's entirely verbalized.
Where to start
New to the practical format entirely? Begin with The NBCE Part IV Exam, Explained, then build a plan with How to Pass Part IV.
Frequently asked
How is Part IV different from Part III?
Part III is a written/computer-based clinical exam testing knowledge; Part IV is a live, timed practical (OSCE-style) that scores how you perform an encounter — history, exam, decisions, communication, and documentation.
Can I study for Part IV the same way as Part III?
No — Part III rewards review and recall; Part IV rewards rehearsed performance. You have to practice full timed encounters, out loud, not just re-read conditions.
Rehearse it, don't just read it.
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