Cardiologists in California: 2,663 enrolled in Medicare
California has 2,663 cardiologists enrolled in Medicare in the CMS file dated Aug 18, 2026, or 6.8 per 100,000 residents. That ranks 40th of 51 (the states and DC); the US rate is 8.7. Most are in Los Angeles, 267. California holds 9% of the country's cardiologists.
By Ryan Doyle, founder of Doctor Email List. Published Oct 5, 2026.
Where California cardiologists practice
The five cities below hold 26% of California's cardiologists. 301 practices and hospitals in the state have at least one listed.
| City | Cardiologists | Share of California |
|---|---|---|
| Los Angeles | 267 | 10% |
| San Francisco | 187 | 7% |
| San Diego | 90 | 3.4% |
| Stanford | 75 | 2.8% |
| La Jolla | 65 | 2.4% |
Largest practice groups for California cardiologists
78% of California cardiologists with a group on file sit in groups of 50 or more listed clinicians; the US figure is 86%.
| Practice or health system, as CMS prints it | California cardiologists listed |
|---|---|
| Permanente Medical Group Inc | 168 |
| Sutter Bay Medical Foundation | 132 |
| The Regents of the University of California | 96 |
| Stanford Health Care | 87 |
| Southern California Permanente Medical Group | 85 |
California against the US
| Measure | California | United States |
|---|---|---|
| Cardiologists per 100,000 residents | 6.8 | 8.7 |
| Women | 19% | 17% |
| Median year of medical school graduation | 2000 | 2000 |
| Offer telehealth | 56% | 32% |
| In groups of 50 or more listed clinicians | 78% | 86% |
Just above California: Hawaii, 6.8. Just below: Texas, 6.7. The range runs from South Dakota (4.0) to Washington DC (25.2). The doctors per capita tool has every state for 51 specialties.
The cardiologist email list is one national CSV, $295 one time; the 2,663 California rows are one filter away.
Buy the cardiologist list, $295Questions about California cardiologists
2,663, enrolled in Medicare as of the CMS file dated Aug 18, 2026, or 6.8 per 100,000 residents. Los Angeles (267), San Francisco (187) and San Diego (90) lead the cities, and Permanente Medical Group Inc lists the most of any group, 168. Physicians who bill no Medicare patients are not in the file.
Not as a separate file: the cardiologist list is national, $295 once. State and ZIP are on nearly every row, so the 2,663 California rows are one filter away.
Cardiologists 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.