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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. Edward Chamberlain, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 457-1256
Dr. Edward Cladera
San Diego, CA · No drug or device payments recorded (2025) · (858) 541-0181
Dr. Edward Kavalerchik, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 642-3356
Dr. Edward Park, DO
San Diego, CA · No drug or device payments recorded (2025) · (619) 532-6400
Dr. Edward Sanford, D.O.
San Diego, CA · $126 in drug and device payments (2025) · Telehealth · (858) 499-2600
Dr. Egisto Salerno, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 422-2555
Dr. Eileen Kim, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Ejaz Ahmed, M.D., PH.D.
San Diego, CA · No drug or device payments recorded (2025) · (213) 608-2346
Dr. Elaine Gertser, MD
San Diego, CA · $16 in drug and device payments (2025) · Telehealth · (619) 582-8055
Dr. Elaine Watkins, D.O
San Diego, CA · No drug or device payments recorded (2025) · (619) 221-6900
Dr. Elan Hekier, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 939-6570
Dr. Eleanore Bernadas, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 543-7768
Dr. Eli Watts, MD
San Diego, CA · $58 in drug and device payments (2025) · (619) 662-4100
Dr. Elizabeth Hastie
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Elizabeth Saarni, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 226-8828
Dr. Emelya Ahadian, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 499-2600
Dr. Emily Bloch, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Emily Chou, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Emily Churchill, MD
San Diego, CA · $479 in drug and device payments (2025) · Telehealth · (619) 278-3300
Dr. Emily Emerick, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 532-7475
Dr. Emily Fireman, MD
San Diego, CA · $155 in drug and device payments (2025) · (858) 499-2616
Dr. Emily Margolin, MD
San Diego, CA · $321 in drug and device payments (2025) · (800) 926-8273
Dr. Emma Basaran, MD
San Diego, CA · $131 in drug and device payments (2025) · (415) 602-3974
Dr. Emma Fisher
San Diego, CA · $89 in drug and device payments (2025) · (619) 881-9169
Dr. Enma Alvarado, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 688-1600
Dr. Eric Blau, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Eric Dahms, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 294-8111
Dr. Eric Johnson, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 245-2830
Dr. Eric Liu, M.D.
San Diego, CA · $2,003 in drug and device payments (2025) · Telehealth · (858) 764-3100
Dr. Eric Mendez
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Eric Mlodzinski
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 939-6570
Dr. Eric Pan, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 784-0500
Dr. Eric Royz
San Diego, CA · No drug or device payments recorded (2025) · (858) 335-4787
Dr. Eric Taylor, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 499-2777
Dr. Erin Gordon, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 290-7194
Dr. Erin Hourigan, MD
San Diego, CA · $40 in drug and device payments (2025) · (619) 532-5990
Dr. Erin Ricketts, MD
San Diego, CA · No drug or device payments recorded (2025) · (760) 712-2966
Dr. Erin Roberts, MD
San Diego, CA · $383 in drug and device payments (2025) · (619) 543-6268
Dr. Erman Wei, M.D.
San Diego, CA · $104 in drug and device payments (2025) · (800) 290-5000
Dr. Eva Runnman, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Fahimeh Lessani, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 764-3345
Dr. Faiz Hussain, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 565-1300
Dr. Fariba Basali, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Farid Ghamsari, MD
San Diego, CA · $811 in drug and device payments (2025) · (619) 543-6268
Dr. Fauzi Najar, MD
San Diego, CA · $132 in drug and device payments (2025) · (619) 423-5616
Dr. Frances Pagan-aponte, MD
San Diego, CA · $231 in drug and device payments (2025) · (619) 881-9169
Dr. Frank Gilman, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 499-2600
Dr. Frank Migliarese, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 532-7400
Dr. Fred Corey, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 229-5055
Dr. Frederick Wu, MD
San Diego, CA · $118 in drug and device payments (2025) · (619) 278-3300

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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Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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.