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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. Anne Chang, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 885-7788
Dr. Anne Cramer, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (888) 803-3370
Dr. Anne Finkbeiner, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Anne Fukutome, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Anne Meneghetti, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 416-3412
Dr. Anne Rosenthal, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 292-1300
Dr. Anne Schafer, M.D.
San Francisco, CA · $53 in drug and device payments (2025) · (415) 885-7889
Dr. Anne Tang, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Annie Loh, MD
San Francisco, CA · $211 in drug and device payments (2025) · (415) 563-4321
Dr. Ann Kim, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 292-1300
Dr. Anousheh Afjei, MD
San Francisco, CA · $299 in drug and device payments (2025) · Telehealth · (415) 600-3458
Dr. Anthony Fritz, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 840-0560
Dr. Anthony Muiru, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-1812
Dr. Anuruddh Misra, MD
San Francisco, CA · $100 in drug and device payments (2025) · (415) 648-9501
Dr. Appledene Osbourne, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2497
Dr. Aravind Mani, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. Ariana Hosseini, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Arian Hatefi
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Arieh Rosenbaum
San Francisco, CA · No drug or device payments recorded (2025) · (925) 634-9704
Dr. Arjun Desai, M.D.
San Francisco, CA · $45,112 in drug and device payments (2025) · (949) 291-9992
Dr. Arlene Keller, M.D.
San Francisco, CA · $196 in drug and device payments (2025) · Telehealth · (415) 923-3179
Dr. Armond Esmaili
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (720) 480-9544
Dr. Arpana Vidyarthi, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2138
Dr. Arti Shah, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2350
Dr. Arul Thangavel, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 713-6322
Dr. Asha Ravikumar, M.D.
San Francisco, CA · $412 in drug and device payments (2025) · Telehealth · (415) 476-1812
Dr. Ashley Kelley, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (800) 997-6196
Dr. Ashwin Peres-da-silva, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-6000
Dr. Asmi Panigrahi, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 833-2000
Dr. Atul Sharma, MD, FACP, MPH, CHES
San Francisco, CA · $58,455 in drug and device payments (2025) · (415) 476-7931
Dr. Ayoda Werede, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Barbara Drye, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-2052
Dr. Barbara Epremian, M.D. , F.A.C.P.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 668-1003
Dr. Barbara Wismer, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · (415) 355-7426
Dr. Barry Breaux, M.D., M.B.A
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (510) 384-2846
Dr. Barry Bugatto, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Barry Zevin, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 355-7400
Dr. Basil Stamos, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 355-7400
Dr. Bella Seerke, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 833-2000
Dr. Benjamin Cox, M.D.
San Francisco, CA · $17 in drug and device payments (2025) · (415) 291-0480
Dr. Benjamin Hassid
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-2776
Dr. Benjamin Maeck, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-5730
Dr. Bernard Lo, MD
San Francisco, CA · $24,727 in drug and device payments (2025) · (415) 353-4624
Dr. Bernard Shalit, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Beth Cohen, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-2129
Dr. Beth Zha, M.D., PH.D.
San Francisco, CA · $9,966 in drug and device payments (2025) · Telehealth · (415) 353-2961
Dr. Bianca Yuh, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (855) 527-1850
Dr. Bliss Temple, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 230-5489
Dr. Boris Peterlin, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2497
Dr. Bradley Monash, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-5928

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.