NPI Portal NPI Lookup & Verification

Internal Medicine in Fairfield, CA

103 active Internal Medicine providers practice in Fairfield, California according to the latest NPPES snapshot. Profiles include the NPI number, taxonomy code, license state, and practice address.

Internal Medicine providers in Fairfield, CA
NPI Name Type Specialty Location
1992038285 Absolute Health Medical Spa Organization Internal Medicine Physician Fairfield, CA
1679830590 Alec Sharp Individual Cardiovascular Disease Physician Fairfield, CA
1568635704 Amanda Adkins Individual Internal Medicine Physician Fairfield, CA
1568512366 Amitkumar Patel Individual Internal Medicine Physician Fairfield, CA
1891231825 Andrew Glickstein Individual Internal Medicine Physician Fairfield, CA
1982646154 Anit Patel Individual Internal Medicine Physician Fairfield, CA
1275191249 Ankit Dubey Individual Internal Medicine Physician Fairfield, CA
1952437527 Ann Chang Individual Internal Medicine Physician Fairfield, CA
1760424212 Anne Chen MD Inc Organization Internal Medicine Physician Fairfield, CA
1871811430 Awan Professional Medical Corp. Organization Cardiovascular Disease Physician Fairfield, CA
1306092838 Bay Area Pulmonary and Critical Care Medical Group Organization Pulmonary Disease Physician Fairfield, CA
1871705897 Cardiac and Vascular Specialists of Northern California, Inc. Organization Cardiovascular Disease Physician Fairfield, CA
1447322243 Cassandra Whitmore Individual Internal Medicine Physician Fairfield, CA
1700974565 Charbel Nadra Individual Internal Medicine Physician Fairfield, CA
1588083075 Clarisse Cadang Individual Internal Medicine Physician Fairfield, CA
1659613057 Cong Santoso Individual Internal Medicine Physician Fairfield, CA
1659398543 Cyrus Mancherje Individual Cardiovascular Disease Physician Fairfield, CA
1386731602 Daniel Green Individual Internal Medicine Physician Fairfield, CA
1952864027 Daniel Slack Individual Internal Medicine Physician Fairfield, CA
1306806740 Davita Nephrology Medical Associates of Ca, Inc. Organization Nephrology Physician Fairfield, CA
1740227297 Dinesh Nagar Individual Internal Medicine Physician Fairfield, CA
1699766220 Donald Doyle Individual Pulmonary Disease Physician Fairfield, CA
1023347101 Donald R Doyle MD Inc A Professional Corp Organization Pulmonary Disease Physician Fairfield, CA
1043398134 Elizabeth Fernandes Individual Internal Medicine Physician Fairfield, CA
1811157126 Ella Gupta Individual Internal Medicine Physician Fairfield, CA
1942697966 Emnet Wassie Individual Internal Medicine Physician Fairfield, CA
1689752412 Eric Crisostomo Individual Internal Medicine Physician Fairfield, CA
1881952737 Frances Lee Individual Gastroenterology Physician Fairfield, CA
1356421291 George Stock Individual Rheumatology Physician Fairfield, CA
1891873634 Georgina Jensen Individual Internal Medicine Physician Fairfield, CA
1669490454 Gurinder Dhillon Individual Cardiovascular Disease Physician Fairfield, CA
1841378734 Gurmeet Sidhu Individual Internal Medicine Physician Fairfield, CA
1356429161 Gurpreet Dhugga Individual Internal Medicine Physician Fairfield, CA
1053649376 Gurpreet S. Dhugga Medical Corporation Organization Internal Medicine Physician Fairfield, CA
1164097804 Hellen Vasquez Individual Internal Medicine Physician Fairfield, CA
1083008262 Ho-Hin Choy Individual Cardiovascular Disease Physician Fairfield, CA
1487132007 Hospitalist Medicine Physicians of California - Fairfield, PC Organization Internal Medicine Physician Fairfield, CA
1952880437 Hospitalist Medicine Physicians of California-Tcg, PC Organization Internal Medicine Physician Fairfield, CA
1710057781 Intercommunity Medical Group Organization Internal Medicine Physician Fairfield, CA
1659450799 Irwin Barr Individual Internal Medicine Physician Fairfield, CA
1851920854 Jack Luo Individual Nephrology Physician Fairfield, CA
1184710063 James Horodyski Individual Internal Medicine Physician Fairfield, CA
1629156526 Jane Hewitt Individual Internal Medicine Physician Fairfield, CA
1881773653 Jason Whitmore Individual Internal Medicine Physician Fairfield, CA
1427079169 Jayesh Patel Individual Internal Medicine Physician Fairfield, CA
1063455954 Jeannette Peterson Individual Internal Medicine Physician Fairfield, CA
1629058615 Jeffrey Breneisen Individual Cardiovascular Disease Physician Fairfield, CA
1851626394 Jeffrey Breneisen MD Inc. Organization Cardiovascular Disease Physician Fairfield, CA
1881682714 Jonathan Lopez Individual Hematology & Oncology Physician Fairfield, CA
1518926484 Josefina Arenas Individual Internal Medicine Physician Fairfield, CA

Frequently asked questions

How many Internal Medicine providers are in Fairfield, CA?
The latest NPPES snapshot lists 103 active Internal Medicine providers with a practice address in Fairfield, California.
How do I check a Internal Medicine provider's NPI in Fairfield?
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.