Rheumatology Physician
10,191 active US providers register Rheumatology Physician as their primary taxonomy. That is 0.1% of every provider in the registry, and the 133rd largest of 584 specialties with a page here.
- Taxonomy code
- 207RR0500X
- Grouping
- Allopathic & Osteopathic Physicians
- Classification
- Internal Medicine
- Specialization
- Rheumatology
- Active providers
- 10,191
- States covered
- 51 of 51
What the code means
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and "collagen" diseases.
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 | 1,148 | |
| Texas | 753 | |
| New York | 730 | |
| Florida | 710 | |
| Pennsylvania | 529 | |
| Illinois | 394 | |
| Massachusetts | 379 | |
| Ohio | 343 | |
| New Jersey | 330 | |
| North Carolina | 313 | |
| Michigan | 303 | |
| Maryland | 287 | |
| Georgia | 278 | |
| Virginia | 257 | |
| Washington | 224 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
8,031 of these are people and 2,160 are organisations, so 21% of the code is businesses rather than clinicians. Half of them had registered by 2007, and 646 registered in the last five years, 6% 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.
- NEW YORK, NY209
- BOSTON, MA149
- HOUSTON, TX125
- PHILADELPHIA, PA121
- CHICAGO, IL116
- LOS ANGELES, CA110
- DALLAS, TX95
- BALTIMORE, MD89
- CLEVELAND, OH84
- SEATTLE, WA80
What else they list
Providers whose primary code is Rheumatology 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 |
|---|---|---|
| Internal Medicine Physician | 2,000 | 19.6% |
| Student in an Organized Health Care Education/Training Program | 624 | 6.1% |
| Hospitalist Physician | 107 | 1.0% |
| Specialist | 82 | 0.8% |
| Non-Pharmacy Dispensing Site | 68 | 0.7% |
| Geriatric Medicine (Internal Medicine) Physician | 37 | 0.4% |
| Allergy & Immunology Physician | 36 | 0.4% |
| Nurse Practitioner | 31 | 0.3% |
Nearby specialties
Other taxonomies NUCC files under Internal Medicine.
- Interventional Cardiology Physician8,478
- Endocrinology, Diabetes & Metabolism Physician12,930
- Critical Care Medicine (Internal Medicine) Physician7,231
- Infectious Disease Physician13,206
- Geriatric Medicine (Internal Medicine) Physician6,380
- Medical Oncology Physician6,375
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.