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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. Bradley Sharpe, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 514-2198
Dr. Brad Moy, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-6305
Dr. Brent Kobashi, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7300
Dr. Brian Block, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 206-8494
Dr. Brian Cogburn, M.D.
San Francisco, CA · $285 in drug and device payments (2025) · Telehealth · (415) 529-4566
Dr. Brian Hamway, MD
San Francisco, CA · $554 in drug and device payments (2025) · (415) 854-1575
Dr. Brian Schwartz, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 885-3725
Dr. Brian Secemsky, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 529-4567
Dr. Brieze Bell, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-7700
Dr. Brinda Ryali, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-7931
Dr. Brindusa Truta, M.D.
San Francisco, CA · $92 in drug and device payments (2025) · (415) 668-1000
Dr. Brittaney Belyeu, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 896-4667
Dr. Brittany Abel, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1529
Dr. Brittany Denzer, MD
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-8000
Dr. Bryan Bourdeau, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1000
Dr. Bryan Ristow, M.D.
San Francisco, CA · $377 in drug and device payments (2025) · (912) 345-0940
Dr. Bryant Hom, DO
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Calvin Chou, MD,PHD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Calvin Shapses, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 392-3611
Dr. Camellia Kani, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-7900
Dr. Carla Callao, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 833-2000
Dr. Carl Bricca, D.O.
San Francisco, CA · $706 in drug and device payments (2025) · Telehealth · (415) 752-0100
Dr. Carma Yaghi, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-9182
Dr. Carmelo Roco, M.D.
San Francisco, CA · $466 in drug and device payments (2025) · Telehealth · (415) 421-2256
Dr. Carmen Cobb-walch
San Francisco, CA · $30 in drug and device payments (2025) · Telehealth · (414) 266-2000
Dr. Caroline Mccoach, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 885-3882
Dr. Carolyn Mar, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 833-2000
Dr. Carolyn Rennels
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 885-7671
Dr. Cassie Cummings, MD
San Francisco, CA · $96 in drug and device payments (2025) · (484) 557-7277
Dr. Catherine Blebea, MD
San Francisco, CA · $640 in drug and device payments (2025) · Telehealth · (415) 476-1000
Dr. Catherine Burke, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-7931
Dr. Catherine Collins, M.D.
San Francisco, CA · $42 in drug and device payments (2025) · Telehealth · (415) 387-8800
Dr. Catherine Crawford, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-1000
Dr. Catherine Devoe
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2421
Dr. Catherine Hu, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (925) 634-9704
Dr. Catherine James, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 292-1356
Dr. Catherine Mclean, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8317
Dr. Catherine Sanders, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 777-9953
Dr. Catherine Smith, M.D.
San Francisco, CA · $20,971 in drug and device payments (2025) · Telehealth · (415) 353-2421
Dr. Cathlin Milligan, M D
San Francisco, CA · $41 in drug and device payments (2025) · Telehealth · (415) 674-5200
Dr. C Cooney, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 346-7200
Dr. Celina Labrec-salmons, MD
San Francisco, CA · No drug or device payments recorded (2025) · (831) 484-7713
Dr. Charles Delatore, M.D.
San Francisco, CA · $98 in drug and device payments (2025) · Telehealth · (415) 600-5400
Dr. Charles Hare, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-4082
Dr. Charles Landefeld, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-6625
Dr. Charles Moser, PH.D., M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 600-4900
Dr. Charles Smith, MD, MPH
San Francisco, CA · $186 in drug and device payments (2025) · (866) 764-7330
Dr. Chelsea Thomsen, M.D., M.S.P.H
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 291-0480
Dr. Chen-ping Butler, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (888) 663-6331
Dr. Cheryl Smith, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (800) 221-5140

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.