Average IQ of a Neurosurgeon: How Smart Are They?

Why the selection is so extreme

Neurosurgery does not make people smart — it screens hard for the trait, at every gate. This is a selection effect, and neurosurgery stacks more filters than almost any other career.

• Medical school admission. Getting in requires a strong undergraduate record and a high MCAT, each of which correlates with cognitive testing.
• The USMLE gauntlet. Among students who matched into neurosurgery in recent U.S. data, the mean USMLE Step 1 score was about 241 — one of the highest of any specialty when Step 1 was still numerically scored.
• A brutal match rate. Neurosurgery is consistently one of the toughest residencies to enter. In the 2024 U.S. Match, roughly a third of U.S. MD seniors who applied failed to match into it.
• The longest training. After four years of undergraduate study and four of medical school, neurosurgical residency runs about seven years — among the longest pipelines in all of medicine.

Each of those gates independently filters for academic ability. Stack seven-plus years of them on top of medical school, and the people who come out the other end are, on average, a very high-scoring group. That is the honest mechanism behind the estimate: relentless academic selection, not a special "surgeon gene."

The honest caveat: IQ is not the whole surgeon

Here is where the reputation gets a useful reality check. In the 2021 Christmas issue of The BMJ, researchers ran the tongue-in-cheek study behind the phrase "it's not brain surgery." They gave the Great British Intelligence Test (via the Cognitron platform) to 329 aerospace engineers and 72 neurosurgeons and compared them with a large general-population sample.

The result: neurosurgeons were not across-the-board smarter than everyone else. They solved problems faster than the general population but were actually slower at memory recall. In other words, they showed a specific cognitive profile rather than blanket superiority. The authors' cheerful conclusion was that both specialties are put on an unnecessary pedestal.

Two things follow. First, that study used online cognitive tasks on a self-selected sample, not a formal supervised IQ test, so it does not overturn the profession-level estimates — but it does puncture the myth of the uniformly genius brain surgeon. Second, and more importantly, IQ is only one input into being a good neurosurgeon. Operating on a brain also demands:

• Fine motor skill and steady hands under a microscope for hours.
• Physical and mental stamina across procedures that can run all day.
• Judgment and calm when something goes wrong mid-operation.
• Communication with patients, families and a whole surgical team.

None of those show up on an IQ test. A very high score is close to a prerequisite for surviving the academic filter, but it is nowhere near sufficient for the actual job. As of 2026, the fair summary is: neurosurgeons are, on average, an exceptionally high-scoring group by selection — and the parts that make them good surgeons are largely things IQ never measures.

FAQ

Q: What is the average IQ of a neurosurgeon?

A: It is estimated at roughly 125 to 140, among the highest of any profession. This is extrapolated from occupational data on physicians and surgeons — whose measured mean sits near 123.7 in the NLSY79 reanalysis — plus the fact that neurosurgery is medicine's most academically selective specialty. There is no large published IQ study of neurosurgeons specifically, so treat the number as an informed estimate, not a measured fact.

Q: Do neurosurgeons have the highest IQ of any profession?

A: Probably near the top, but the margins are tiny. Physicians, professors, lawyers and top scientists all cluster in the mid-120s to low-130s in the research, and the differences between them are small. Neurosurgery likely sits at or near the ceiling of that group because of its selection, but "highest of all" is an assumption, not a demonstrated result.

Q: Does a high IQ make someone a good neurosurgeon?

A: No — it is necessary but far from sufficient. A high score helps clear the years of academic filters that lead into neurosurgery, but the job itself relies on fine motor skill, stamina, judgment under pressure and communication. A 2021 BMJ study even found neurosurgeons were not uniformly smarter than the general public across all cognitive tasks.

Q: Where can I see how I compare?

A: You can take a proper cognitive test yourself. No single number defines anyone, but if you are curious where you land relative to the average of 100, a standardized test gives you a benchmark. Our test is free to take, with detailed results available as a paid report.

References

• Harrell, T. W., & Harrell, M. S. (1945). Army General Classification Test scores for civilian occupations. Educational and Psychological Measurement.
• Hauser, R. M. (2002). Meritocracy, cognitive ability, and the sources of occupational success. CDE Working Paper, University of Wisconsin-Madison.
• Global cognitive performance of neurosurgeons and aerospace engineers (2021). The BMJ, Christmas issue.

Last updated: July 13, 2026