Specialty · state directory
Internal Medicine in California - NPI Providers
Active Internal Medicine providers with a practice location in California. Each profile shows the NPI number, taxonomy code, license details, and practice address, useful for claims, credentialing, and verifying a provider.
42,719
providers in California
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Internal Medicine providers in California
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1952538852 | 1chinomed Inc | Organization | Internal Medicine Physician | Chino, CA |
| 1891199329 | 2020health | Organization | Cardiovascular Disease Physician | Los Angeles, CA |
| 1306561030 | 3 Musketeers Medical Group, A Medical Corporation | Organization | Internal Medicine Physician | Fresno, CA |
| 1194172510 | 360 Medical Weight Specialists | Organization | Obesity Medicine (Internal Medicine) Physician | Walnut Creek, CA |
| 1467827683 | 360 Recovery Inc | Organization | Addiction Medicine (Internal Medicine) Physician | Laguna Niguel, CA |
| 1164869780 | 365 Mdcare Inc | Organization | Internal Medicine Physician | Riverside, CA |
| 1780275016 | 365 Medical Group, Inc | Organization | Internal Medicine Physician | Garden Grove, CA |
| 1497592869 | 5 Rivers Health Inc | Organization | Internal Medicine Physician | Rocklin, CA |
| 1154766566 | 5 Star Pain Relief PC | Organization | Internal Medicine Physician | Palm Desert, CA |
| 1225709769 | 7 Heaven Hospice Inc. | Organization | Hospice and Palliative Medicine (Internal Medicine) Physician | Garden Grove, CA |
| 1437186798 | 8920 Medical Associates, Inc. | Organization | Endocrinology, Diabetes & Metabolism Physician | Beverly Hills, CA |
| 1437875390 | 9-Five Clinics Inc | Organization | Internal Medicine Physician | Long Beach, CA |
| 1639871627 | 9amhealth Medical Group of California, P.C. | Organization | Internal Medicine Physician | Encinitas, CA |
| 1124721717 | 9amhealth Medical Group of Kansas, P.A. | Organization | Internal Medicine Physician | Encinitas, CA |
| 1134822729 | 9amhealth Medical Group of New Jersey, P.C. | Organization | Internal Medicine Physician | Encinitas, CA |
| 1245911403 | A & M MD PC | Organization | Nephrology Physician | Hemet, CA |
| 1346651429 | A Better Weigh, M.D. | Organization | Internal Medicine Physician | Santa Cruz, CA |
| 1639487150 | A J Klein MD A Professional Corporation | Organization | Internal Medicine Physician | Alpine, CA |
| 1235328048 | A James Lewis, MD, Inc. | Organization | Cardiovascular Disease Physician | Torrance, CA |
| 1598052607 | A Kolluru | Individual | Internal Medicine Physician | Burbank, CA |
| 1013760248 | A Mu D O Inc | Organization | Infectious Disease Physician | Clovis, CA |
| 1942306550 | A Nourin, MD, Inc | Organization | Internal Medicine Physician | La Mesa, CA |
| 1407210958 | A Plus Walk in Urgent Care | Organization | Internal Medicine Physician | Murrieta, CA |
| 1750456760 | A Plus Walk in Urgent Care Medical Clinic Apc | Organization | Internal Medicine Physician | Murrieta, CA |
| 1063600443 | A Randolph Pearlstein MD A Medical Corporation | Organization | Internal Medicine Physician | Beverly Hills, CA |
| 1457501371 | A Reza Moattari MD Inc. | Organization | Endocrinology, Diabetes & Metabolism Physician | Newport Beach, CA |
| 1417805334 | A Sharma Medical Group PC | Organization | Hospice and Palliative Medicine (Internal Medicine) Physician | Oroville, CA |
| 1548131634 | A Singh MD PC | Organization | Internal Medicine Physician | Granite Bay, CA |
| 1295581809 | A&B Medical Clinic Center Inc. | Organization | Internal Medicine Physician | Arcadia, CA |
| 1750251344 | A&L Medical Center, Inc. | Organization | Internal Medicine Physician | Van Nuys, CA |
| 1528683398 | A-1 Healthcare Management | Organization | Hospice and Palliative Medicine (Internal Medicine) Physician | Huntington Beach, CA |
| 1770694226 | A. Brooks | Individual | Gastroenterology Physician | Truckee, CA |
| 1588650626 | A. Grant Kingsbury, MD, Inc | Organization | Internal Medicine Physician | San Diego, CA |
| 1912250358 | A. M. Memar-Zia MD Inc. | Organization | Internal Medicine Physician | Simi Valley, CA |
| 1609269885 | A. Marsh Medical Clinic | Organization | Internal Medicine Physician | Los Angeles, CA |
| 1861674376 | A. Ray Mabaquiao M.D. Apmc | Organization | Rheumatology Physician | El Centro, CA |
| 1720200363 | A. Reddy, M.D, Inc | Organization | Hematology & Oncology Physician | Merced, CA |
| 1700088556 | A. Richard Adrouny, M.D., Inc. | Organization | Medical Oncology Physician | Los Gatos, CA |
| 1992857700 | A. William Waibel | Individual | Interventional Cardiology Physician | Walnut Creek, CA |
| 1437287042 | A.S. Sawhney, M.D., Inc. | Organization | Nephrology Physician | Fountain Valley, CA |
| 1366559486 | A.S.Lalith Mohan M.D. Prof. Inc | Organization | Cardiovascular Disease Physician | Petaluma, CA |
| 1023191780 | A.V. Meridien Medical Group, Inc | Organization | Nephrology Physician | Palmdale, CA |
| 1710939822 | A.Venkatesh,M.D.,Inc | Organization | Cardiovascular Disease Physician | Sherman Oaks, CA |
| 1588344915 | A1c Total Care Diabetes | Organization | Endocrinology, Diabetes & Metabolism Physician | Highland, CA |
| 1477963726 | Aabed Meer | Individual | Internal Medicine Physician | Stanford, CA |
| 1427277136 | Aadesh Sachdeva | Individual | Internal Medicine Physician | Fountain Valley, CA |
| 1487091575 | Aadhar Adhlakha | Individual | Internal Medicine Physician | Fresno, CA |
| 1477998995 | Aakriti Gupta | Individual | Interventional Cardiology Physician | Los Angeles, CA |
| 1548837909 | Aalap Mehta | Individual | Internal Medicine Physician | Downey, CA |
| 1952868002 | Aaliya H Yaqub MD PC | Organization | Endocrinology, Diabetes & Metabolism Physician | San Francisco, CA |
Internal Medicine by city in California
Internal Medicine in Los Angeles, CA 3,750 Internal Medicine in San Francisco, CA 2,574 Internal Medicine in San Diego, CA 2,138 Internal Medicine in Sacramento, CA 1,337 Internal Medicine in Stanford, CA 1,024 Internal Medicine in San Jose, CA 861 Internal Medicine in Fresno, CA 794 Internal Medicine in Torrance, CA 677 Internal Medicine in Oakland, CA 675 Internal Medicine in Orange, CA 600 Internal Medicine in Beverly Hills, CA 542 Internal Medicine in La Jolla, CA 533 Internal Medicine in Long Beach, CA 529 Internal Medicine in Bakersfield, CA 501 Internal Medicine in Santa Monica, CA 464 Internal Medicine in Riverside, CA 441 Internal Medicine in Walnut Creek, CA 424 Internal Medicine in Loma Linda, CA 413 Internal Medicine in Anaheim, CA 407 Internal Medicine in Palo Alto, CA 399 Internal Medicine in Pasadena, CA 397 Internal Medicine in Newport Beach, CA 382 Internal Medicine in Glendale, CA 364 Internal Medicine in West Hollywood, CA 352 Internal Medicine in Irvine, CA 342 Internal Medicine in Roseville, CA 327 Internal Medicine in Modesto, CA 326 Internal Medicine in Santa Barbara, CA 311 Internal Medicine in Santa Rosa, CA 293 Internal Medicine in Fountain Valley, CA 287
Frequently asked questions
How many Internal Medicine providers are in California?
The latest NPPES snapshot lists 42,719 active providers with Internal Medicine as their primary taxonomy and a practice location in California.
How do I verify a Internal Medicine provider's NPI in California?
Open the provider's profile below to see their NPI, taxonomy code, license state, and practice address, then cross-check against the official NPPES registry (linked on every profile).
Can I get this data through an API?
Yes, the NPI Portal API provides JSON search by specialty, state, and city, plus batch NPI verification.
Source: CMS NPPES (public data). Snapshot 2026-07-13.