Internal Medicine in San Marcos, CA
33 active Internal Medicine providers practice in San Marcos, California according to the latest NPPES snapshot. Profiles include the NPI number, taxonomy code, license state, and practice address.
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| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1851376917 | Anas Kayal | Individual | Nephrology Physician | San Marcos, CA |
| 1609066018 | Arturo Tolentino | Individual | Internal Medicine Physician | San Marcos, CA |
| 1144455262 | Basma Al Nahlawi | Individual | Rheumatology Physician | San Marcos, CA |
| 1063785897 | California Cancer Associates for Research and Excellence Inc | Organization | Hematology & Oncology Physician | San Marcos, CA |
| 1669829578 | California Emergency Physicians Medical Group, A Professional Corporat | Organization | Internal Medicine Physician | San Marcos, CA |
| 1497727465 | Edward Mcclay | Individual | Medical Oncology Physician | San Marcos, CA |
| 1316190747 | Francisco Marquez | Individual | Internal Medicine Physician | San Marcos, CA |
| 1649469883 | Herbert Yue | Individual | Pulmonary Disease Physician | San Marcos, CA |
| 1922628460 | Inland Empire Physicians | Organization | Internal Medicine Physician | San Marcos, CA |
| 1184735201 | Izabela Witczak | Individual | Internal Medicine Physician | San Marcos, CA |
| 1528084340 | Joseph Czvik | Individual | Internal Medicine Physician | San Marcos, CA |
| 1588826291 | Joseph F Czvik MD Inc | Organization | Internal Medicine Physician | San Marcos, CA |
| 1346351517 | Juan Alvergue | Individual | Cardiovascular Disease Physician | San Marcos, CA |
| 1811552771 | Justin Charles | Individual | Internal Medicine Physician | San Marcos, CA |
| 1649830498 | Kathryn Germeraad | Individual | Internal Medicine Physician | San Marcos, CA |
| 1336500305 | Kayal Medical Group Inc. | Organization | Internal Medicine Physician | San Marcos, CA |
| 1669738928 | Lauren Clarine | Individual | Internal Medicine Physician | San Marcos, CA |
| 1346354776 | Lauren Jefferis | Individual | Internal Medicine Physician | San Marcos, CA |
| 1609947449 | Marie Russell | Individual | Internal Medicine Physician | San Marcos, CA |
| 1154598571 | Meenu Bawa | Individual | Internal Medicine Physician | San Marcos, CA |
| 1942444500 | Michael Mctigue | Individual | Gastroenterology Physician | San Marcos, CA |
| 1154403640 | Minh Nguyen | Individual | Internal Medicine Physician | San Marcos, CA |
| 1790193738 | Mona Arasoghli | Individual | Internal Medicine Physician | San Marcos, CA |
| 1679459077 | Pacific Coastal Medical Group Professional Corporation | Organization | Internal Medicine Physician | San Marcos, CA |
| 1912234121 | Philip Marjon | Individual | Hematology & Oncology Physician | San Marcos, CA |
| 1467485078 | Samuel Poniachik | Individual | Internal Medicine Physician | San Marcos, CA |
| 1427365576 | Shabnam Burke | Individual | Pulmonary Disease Physician | San Marcos, CA |
| 1972519825 | Shreya Chandra | Individual | Internal Medicine Physician | San Marcos, CA |
| 1689487571 | Sprague Medical Corp | Organization | Internal Medicine Physician | San Marcos, CA |
| 1366478661 | Sujatha Murali | Individual | Hematology & Oncology Physician | San Marcos, CA |
| 1720855505 | Summitcare Medical | Organization | Internal Medicine Physician | San Marcos, CA |
| 1023239035 | Sze Hoay Ding | Individual | Internal Medicine Physician | San Marcos, CA |
| 1285263830 | Tina Tran | Individual | Internal Medicine Physician | San Marcos, CA |
Frequently asked questions
How many Internal Medicine providers are in San Marcos, CA?
The latest NPPES snapshot lists 33 active Internal Medicine providers with a practice address in San Marcos, California.
How do I check a Internal Medicine provider's NPI in San Marcos?
Open a profile below to see the NPI number, taxonomy code, and practice address, then verify against the official NPPES registry — every profile links directly to the CMS record.
Source: CMS NPPES (public data). Snapshot 2026-07-11.