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Internal Medicine Doctors in California

Data updated monthly · Last refresh October 2026

17,715 Internal Medicine providers practice in California, including 4,245 (24%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

17,715providers
4,245telehealth
Los Angelestop city

Internal Medicine by city in California

Choose a city to see providers there.

Internal Medicine in Los Angeles1,417 providers
Internal Medicine in San Francisco1,322 providers
Internal Medicine in San Diego970 providers
Internal Medicine in Sacramento602 providers
Internal Medicine in Oakland434 providers
Internal Medicine in San Jose433 providers
Internal Medicine in Stanford383 providers
Internal Medicine in Fresno339 providers
Internal Medicine in Torrance230 providers
Internal Medicine in Long Beach225 providers
Internal Medicine in Bakersfield210 providers
Internal Medicine in Loma Linda209 providers
Internal Medicine in Palo Alto189 providers
Internal Medicine in Anaheim188 providers
Internal Medicine in Orange188 providers
Internal Medicine in Riverside188 providers
Internal Medicine in Walnut Creek184 providers
Internal Medicine in Santa Monica170 providers
Internal Medicine in La Jolla161 providers
Internal Medicine in Roseville159 providers
Internal Medicine in Irvine155 providers
Internal Medicine in Beverly Hills152 providers
Internal Medicine in Santa Clara142 providers
Internal Medicine in Pasadena138 providers

Internal Medicine providers in California

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Tommy Tomizawa, M.D.
Beverly Hills, CA · $31 in drug and device payments (2025) · (310) 653-9256
Dr. Vidhi Doshi, M.D.
Beverly Hills, CA · No drug or device payments recorded (2025) · Telehealth · (310) 205-7310
Dr. Vinky Chadha, MD
Beverly Hills, CA · $126 in drug and device payments (2025) · (310) 740-2970
Dr. Violette Gray, M.D.
Beverly Hills, CA · No drug or device payments recorded (2025) · Telehealth · (310) 385-6064
Dr. Vivian Lin, M.D.
Beverly Hills, CA · No drug or device payments recorded (2025) · Telehealth · (310) 423-8793
Dr. Wendy Cheng, M.D.
Beverly Hills, CA · $1,441 in drug and device payments (2025) · Telehealth · (424) 777-0349
Dr. William Tuong, M.D.
Beverly Hills, CA · No drug or device payments recorded (2025) · Telehealth · (310) 423-5161
Dr. Yalda Azarmehr, M.D.
Beverly Hills, CA · No drug or device payments recorded (2025) · Telehealth · (310) 385-3534
Dr. Asao Kamei, MD
Bishop, CA · No drug or device payments recorded (2025) · (760) 873-5811
Dr. David Lichtenfeld, MD
Bishop, CA · No drug or device payments recorded (2025) · (760) 873-5811
Dr. Jeremiah Cheng
Bishop, CA · No drug or device payments recorded (2025) · (760) 873-2623
Dr. Manish Pandya, M.D.
Bishop, CA · No drug or device payments recorded (2025) · (760) 873-5811
Dr. Nickoline Hathaway, MD
Bishop, CA · No drug or device payments recorded (2025) · (760) 873-7111
Dr. Susan Robinson, M.D.
Bishop, CA · No drug or device payments recorded (2025) · (805) 746-6229
Dr. David Dunn, M.D.
Blythe, CA · No drug or device payments recorded (2025) · (760) 922-5000
Dr. Romeo Felito Ang, M.D.
Blythe, CA · No drug or device payments recorded (2025) · (760) 922-5300
Dr. Srinivas Vuthoori, M.D.
Blythe, CA · $77 in drug and device payments (2025) · (760) 660-4790
Dr. Brett Holko, D.O.
Bonita, CA · No drug or device payments recorded (2025) · (800) 290-5000
Dr. Clint Hoangquocgia, D.O.
Bonita, CA · No drug or device payments recorded (2025) · (619) 528-6111
Dr. Donald Sandweiss, M.D.
Bonita, CA · No drug or device payments recorded (2025) · (619) 479-6234
Dr. Isaac Davis, DO
Bonita, CA · No drug or device payments recorded (2025) · (800) 291-6054
Dr. Jose Leon, MD
Bonita, CA · $33 in drug and device payments (2025) · (619) 502-7300
Dr. Rosevelle Mcmillin, M.D.
Bonita, CA · No drug or device payments recorded (2025) · Telehealth · (619) 409-6212
Dr. David Medway, MD
Bonsall, CA · $48 in drug and device payments (2025) · (818) 342-0215
Dr. Mehboob Ghulam, DO
Brawley, CA · $891 in drug and device payments (2025) · (760) 550-6654
Dr. Michael Krutzik, MD
Brawley, CA · No drug or device payments recorded (2025) · Telehealth · (760) 344-6355
Dr. My Tran, MD
Brawley, CA · No drug or device payments recorded (2025) · (760) 351-4894
Dr. Nabil Abbassi, M.D.
Brawley, CA · No drug or device payments recorded (2025) · (760) 344-9951
Dr. Ramon Rodriguez, MD
Brawley, CA · No drug or device payments recorded (2025) · (760) 344-1881
Dr. Sunny Richley, MD
Brawley, CA · No drug or device payments recorded (2025) · (760) 341-4400
Dr. Aeri Kang, M.D.
Brea, CA · No drug or device payments recorded (2025) · (714) 449-6900
Dr. Edward Hutchison, M.D.
Brea, CA · No drug or device payments recorded (2025) · (714) 996-2390
Dr. Franklin Dawes, M.D.
Brea, CA · No drug or device payments recorded (2025) · (562) 365-3540
Dr. Nadia Tadros, M.D.
Brea, CA · No drug or device payments recorded (2025) · (714) 672-5210
Dr. Pearl D'sa, M.D.
Brea, CA · No drug or device payments recorded (2025) · (562) 365-3540
Dr. Quoc Nguyen, M.D., M.P.H
Brea, CA · $46 in drug and device payments (2025) · Telehealth · (714) 672-5100
Dr. Siera Panhwar, M.D.
Brea, CA · No drug or device payments recorded (2025) · (562) 365-3540
Dr. Brian Reyes, M.D.
Brentwood, CA · No drug or device payments recorded (2025) · Telehealth · (925) 276-9908
Dr. Joline Heo, M.D.
Brentwood, CA · No drug or device payments recorded (2025) · Telehealth · (925) 513-2483
Dr. Matthew Campbell, M.D.
Brentwood, CA · No drug or device payments recorded (2025) · (925) 753-1986
Dr. Sherry Albrink, M.D.
Brentwood, CA · No drug or device payments recorded (2025) · Telehealth · (925) 513-9495
Dr. Sinan Alshahwany, M.D.
Brentwood, CA · $37 in drug and device payments (2025) · Telehealth · (925) 308-8112
Dr. Spencer Martin, M.D.
Brentwood, CA · $36 in drug and device payments (2025) · (925) 308-8112
Dr. Yogesh Trehan, M.D.
Brentwood, CA · $1,122 in drug and device payments (2025) · (925) 516-4488
Dr. Edgardo Gonzalez, M.D
Buena Park, CA · $1,810 in drug and device payments (2025) · (714) 994-5290
Dr. Felicia Tran, MD
Buena Park, CA · $2,364 in drug and device payments (2025) · (714) 994-5290
Dr. Hoon Hong, M.D.
Buena Park, CA · $2,409 in drug and device payments (2025) · (714) 523-7575
Dr. Michael Her, M.D.
Buena Park, CA · No drug or device payments recorded (2025) · Telehealth · (714) 522-4009
Dr. Omar Fadeel, M.D.
Buena Park, CA · $91 in drug and device payments (2025) · (714) 880-3801
Dr. Paul Chang, M.D.
Buena Park, CA · $2,128 in drug and device payments (2025) · (714) 523-7575

Conditions Internal Medicine providers in California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in California?

There are 17,715 Internal Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Internal Medicine providers in California offer telehealth?

Yes. 4,245 of the 17,715 Internal Medicine providers in California (about 24%) report offering telehealth services in CMS data.

Which cities in California have the most Internal Medicine providers?

Los Angeles (1,417), San Francisco (1,322), San Diego (970) have the highest concentration of Internal Medicine providers in California.

How many Internal Medicine providers in California received drug or device company payments?

5,614 of 17,715 Internal Medicine providers in California (32%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in California treat?

Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Do most Internal Medicine Doctors in California work in independent practices or large health systems?

Among 10,847 Internal Medicine Doctors in California enrolled in Medicare, 20% bill through a solo or small practice with fewer than 10 clinicians, 12% through a mid-size group of 10 to 99, and 67% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Internal Medicine Doctors in California work at?

According to CMS facility affiliation records, the California hospitals where the most Internal Medicine Doctors hold privileges are Stanford Health Care in Stanford; UCSF Medical Center in San Francisco; Ronald Reagan UCLA Medical Center in Los Angeles.

Related reading on HealthcareDiscovery.AI

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Internal Medicine in California? Get featured.