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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. Anu Mittal, D.O.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4000
Dr. Anupam Marwaha, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 799-5445
Dr. Aristakes Mnatsakanyan, DO
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-8131
Dr. Armando Camacho-santos, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074
Dr. Ather Mehboob, M.D.
Loma Linda, CA · $321 in drug and device payments (2025) · Telehealth · (909) 558-2191
Dr. Axa Martell, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-2191
Dr. Ayesha Baig, MD
Loma Linda, CA · $50 in drug and device payments (2025) · (909) 558-4015
Dr. Balu Gadhe, M.D.
Loma Linda, CA · $28 in drug and device payments (2025) · (909) 255-0108
Dr. Bevan Geslani, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-2870
Dr. Beverly Dolberg, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 583-6905
Dr. Bidur Dhakal, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4884
Dr. Bobby Chan, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Brett Schaeffer, M.D.
Loma Linda, CA · $142 in drug and device payments (2025) · (909) 558-4006
Dr. Brian Diep, DO
Loma Linda, CA · $131 in drug and device payments (2025) · (909) 558-4074
Dr. Bruce Adrian Casipit, MD
Loma Linda, CA · $55 in drug and device payments (2025) · (909) 558-2840
Dr. Carolann Rosario, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Caroline Laferla
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4174
Dr. Carvy Floyd Luceno, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4047
Dr. Charisse Brandon, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4884
Dr. Charmaine Ortizo, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · Telehealth · (909) 558-4074
Dr. Chibueze Ubah
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074
Dr. Christina Kim, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Christopher Nguyen, DO
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4000
Dr. Cindy Zhang, M.D.
Loma Linda, CA · $18 in drug and device payments (2025) · (909) 558-4074
Dr. Conny Tirtaman-sie, M.D
Loma Linda, CA · $150 in drug and device payments (2025) · (909) 825-7084
Dr. Constanza Burciaga Calderoni, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4174
Dr. Daniel Betat
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074
Dr. Dante Garcia
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4884
Dr. Danyal Imam, M.B.B.S
Loma Linda, CA · $274 in drug and device payments (2025) · Telehealth · (909) 558-4000
Dr. David Baylink, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-2191
Dr. David Chan, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 641-6882
Dr. David Eng, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4000
Dr. Debra Craig, M.D.
Loma Linda, CA · $122 in drug and device payments (2025) · (909) 558-2191
Dr. Debra Stottlemyer, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-2870
Dr. Deepak Garg
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4884
Dr. Denise Townsend, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-2870
Dr. Derrick Cleland, DO, MPH
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074
Dr. Devanshi Mehta, DO
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074
Dr. Diane Berriman, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Douglas Wang
Loma Linda, CA · No drug or device payments recorded (2025) · Telehealth · (909) 558-4174
Dr. Drew Tadiarca, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4000
Dr. Dulce Rodriguez, MD
Loma Linda, CA · No drug or device payments recorded (2025) · Telehealth · (909) 558-4074
Dr. Dwight Evans, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 583-6007
Dr. Edmond Kalantar Ohanian, D.O
Loma Linda, CA · $29 in drug and device payments (2025) · (909) 558-4000
Dr. Eduardo Gonzaga, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 583-6176
Dr. Elissa Kim
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074
Dr. Ellen Kim, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4884
Dr. Emil Harty, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074
Dr. Enacio Hunt, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Endre Agoston, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-4074

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

Internal Medicine in all 50 states Search all 17,715 in the directory Ask Zach for help choosing

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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.