Hematology (Internal Medicine) Physician: NPI taxonomy code 207RH0000X
Taxonomy code 207RH0000X is Internal Medicine: Hematology, in the Allopathic & Osteopathic Physicians group.
1,590 active NPIs list it as their primary specialty (<0.1% of all).
| Code | 207RH0000X |
|---|---|
| Group | Allopathic & Osteopathic Physicians |
| Classification | Internal Medicine |
| Specialization | Hematology |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 1,590 (1,491 individuals, 99 organizations) |
What NUCC says: An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma. (excerpt of the NUCC 26.1 definition)
Find Hematology (Internal Medicine) Physician providers
Search the registry for providers listing Hematology. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| California | 185 | 11.6% |
| New York | 178 | 11.2% |
| Minnesota | 127 | 8.0% |
| Massachusetts | 121 | 7.6% |
| Ohio | 91 | 5.7% |
| Texas | 77 | 4.8% |
| North Carolina | 77 | 4.8% |
| Pennsylvania | 74 | 4.7% |
| Florida | 72 | 4.5% |
| Michigan | 62 | 3.9% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
- Internal Medicine Physician 191,739
- Cardiovascular Disease Physician 36,469
- Gastroenterology Physician 26,237
- Pulmonary Disease Physician 19,774
- Hematology & Oncology Physician 17,624
- Nephrology Physician 17,596
- Infectious Disease Physician 13,258
- Endocrinology, Diabetes & Metabolism Physician 13,019
Specialty definitions are from the NUCC Health Care Provider Taxonomy (version 26.1). Which code to use on a claim depends on your NPPES record and your payer. See taxonomy codes explained.