Hematology (Pathology) Physician
515 active US providers register Hematology (Pathology) Physician as their primary taxonomy. That is 0.01% of every provider in the registry, and the 485th largest of 584 specialties with a page here.
- Taxonomy code
- 207ZH0000X
- Grouping
- Allopathic & Osteopathic Physicians
- Classification
- Pathology
- Specialization
- Hematology
- Active providers
- 515
- States covered
- 41 of 51
What the code means
A hematopathologist is expert in diseases that affect blood cells, blood clotting mechanisms, bone marrow and lymph nodes. This physician has the knowledge and technical skills essential for the laboratory diagnosis of anemias, leukemias, lymphomas, bleeding disorders and blood clotting disorders.
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 | 65 | |
| Texas | 54 | |
| New York | 52 | |
| Florida | 31 | |
| Minnesota | 29 | |
| Illinois | 22 | |
| New Jersey | 21 | |
| Washington | 19 | |
| Massachusetts | 16 | |
| Utah | 16 | |
| Maryland | 15 | |
| Colorado | 13 | |
| Pennsylvania | 11 | |
| Missouri | 11 | |
| Virginia | 11 |
Showing the 15 largest of 41 states with at least one.
Who registers under this code
504 of these are people and 11 are organisations, so 2% of the code is businesses rather than clinicians. Half of them had registered by 2007, and 27 registered in the last five years, 5% 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, TX34
- ROCHESTER, MN24
- NEW YORK, NY23
- SEATTLE, WA18
- TAMPA, FL17
- SALT LAKE CITY, UT16
- LOS ANGELES, CA14
- DUARTE, CA10
- AURORA, CO10
- BOSTON, MA9
What else they list
Providers whose primary code is Hematology (Pathology) 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 | 222 | 43.1% |
| Student in an Organized Health Care Education/Training Program | 51 | 9.9% |
| Clinical Pathology/Laboratory Medicine Physician | 36 | 7.0% |
| Anatomic Pathology Physician | 34 | 6.6% |
| Molecular Genetic Pathology (Pathology) Physician | 14 | 2.7% |
| Blood Banking & Transfusion Medicine Physician | 9 | 1.7% |
| Clinical Pathology Physician | 8 | 1.6% |
| Cytopathology Physician | 6 | 1.2% |
Nearby specialties
Other taxonomies NUCC files under Pathology.
- Clinical Pathology Physician518
- Dermatopathology (Pathology) Physician563
- Cytopathology Physician587
- Blood Banking & Transfusion Medicine Physician438
- Forensic Pathology Physician595
- Clinical Pathology/Laboratory Medicine Physician1,628
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.