Rheumatologists in California: 622 enrolled in Medicare
California has 622 rheumatologists enrolled in Medicare in the CMS file dated Aug 18, 2026, or 1.6 per 100,000 residents. That ranks 21st of 51 (the states and DC); the US rate is 1.6. Most are in Los Angeles, 102. California holds 11% of the country's rheumatologists.
By Ryan Doyle, founder of Doctor Email List. Published Oct 5, 2026.
Where California rheumatologists practice
The five cities below hold 32% of California's rheumatologists. 134 practices and hospitals in the state have at least one listed.
| City | Rheumatologists | Share of California |
|---|---|---|
| Los Angeles | 102 | 16% |
| San Francisco | 36 | 5.8% |
| San Diego | 23 | 3.7% |
| Sacramento | 21 | 3.4% |
| San Jose | 15 | 2.4% |
Largest practice groups for California rheumatologists
79% of California rheumatologists with a group on file sit in groups of 50 or more listed clinicians; the US figure is 78%.
| Practice or health system, as CMS prints it | California rheumatologists listed |
|---|---|
| The Regents of the University of California | 45 |
| Permanente Medical Group Inc | 31 |
| Sutter Bay Medical Foundation | 24 |
| University of California San Francisco | 24 |
| Southern California Permanente Medical Group | 23 |
California against the US
| Measure | California | United States |
|---|---|---|
| Rheumatologists per 100,000 residents | 1.6 | 1.6 |
| Women | 57% | 52% |
| Median year of medical school graduation | 2003 | 2004 |
| Offer telehealth | 71% | 61% |
| In groups of 50 or more listed clinicians | 79% | 78% |
Just above California: South Carolina, 1.6. Just below: Florida, 1.6. The range runs from Wyoming (0.9) to Washington DC (3.4). The doctors per capita tool has every state for 51 specialties.
The rheumatologist email list is one national CSV, $295 one time; the 622 California rows are one filter away.
Buy the rheumatologist list, $295Questions about California rheumatologists
622, enrolled in Medicare as of the CMS file dated Aug 18, 2026, or 1.6 per 100,000 residents. Los Angeles (102), San Francisco (36) and San Diego (23) lead the cities, and The Regents of the University of California lists the most of any group, 45. Physicians who bill no Medicare patients are not in the file.
Not as a separate file: the rheumatologist list is national, $295 once. State and ZIP are on nearly every row, so the 622 California rows are one filter away.
Rheumatologists in other large states
Other specialties in California
Specialty email lists
National CSVs, one per specialty. City, state and ZIP are on the rows, so any state is one filter away.