Taxonomy 207ZC0500X

Cytopathology Physician

587 active US providers register Cytopathology Physician as their primary taxonomy. That is 0.01% of every provider in the registry, and the 463rd largest of 584 specialties with a page here.

Taxonomy code: 207ZC0500X
Grouping: Allopathic & Osteopathic Physicians
Classification: Pathology
Specialization: Cytopathology
Active providers: 587
States covered: 47 of 51

What the code means

A cytopathologist is an anatomic pathologist trained in the diagnosis of human disease by means of the study of cells obtained from body secretions and fluids, by scraping, washing, or sponging the surface of a lesion, or by the aspiration of a tumor mass or body organ with a fine needle. A major aspect of a cytopathologist's practice is the interpretation of Papanicolaou-stained smears of cells from the female reproductive systems, the "Pap" test. However, the cytopathologist's expertise is applied to the diagnosis of cells from all systems and areas of the body. He/she is a consultant to all medical specialists.

Definition quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.

Where they are

Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.

State	Providers	Share
California	82
New York	58
Texas	42
Massachusetts	35
Pennsylvania	34
Florida	29
Illinois	27
Michigan	23
Ohio	17
Maryland	17
New Jersey	17
Washington	16
Colorado	15
Tennessee	14
Louisiana	11

Showing the 15 largest of 47 states with at least one.

Who registers under this code

549 of these are people and 38 are organisations, so 6% of the code is businesses rather than clinicians. Half of them had registered by 2006, and 12 registered in the last five years, 2% of the current population.

That is a slow-growing code, which usually means an established field replacing retirements rather than expanding.

Where the practices are

By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.

HOUSTON, TX19
SAN FRANCISCO, CA14
NEW YORK, NY13
LOS ANGELES, CA13
SEATTLE, WA11
TAMPA, FL10
CHICAGO, IL10
AURORA, CO10
GRANDVILLE, MI9
BALTIMORE, MD9

What else they list

Providers whose primary code is Cytopathology Physician most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.

Also listed	Providers	Share
Anatomic Pathology & Clinical Pathology Physician	284	48.4%
Anatomic Pathology Physician	70	11.9%
Student in an Organized Health Care Education/Training Program	26	4.4%
Hematology (Pathology) Physician	13	2.2%
Clinical Pathology/Laboratory Medicine Physician	12	2.0%
Dermatopathology (Pathology) Physician	12	2.0%
Neuropathology Physician	10	1.7%
Immunopathology Physician	8	1.4%

Nearby specialties

Other taxonomies NUCC files under Pathology.

Looking up a specific provider

These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.

Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.