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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. Christine Kho, MD
Los Angeles, CA · $26 in drug and device payments (2025) · (888) 499-9303
Dr. Christine Kim, MD, MPH
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 337-1839
Dr. Christine Moon, DO
Los Angeles, CA · $133 in drug and device payments (2025) · (323) 268-5000
Dr. Christine Willinger, MD, MPH
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Christine Yeoh Hauser, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4720
Dr. Christine Yu, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6766
Dr. Christopher Jenkins
Los Angeles, CA · $113 in drug and device payments (2025) · (323) 409-1000
Dr. Christopher Lees, MD
Los Angeles, CA · $144 in drug and device payments (2025) · (310) 206-6232
Dr. Christopher Seet, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-9111
Dr. Christopher Subject, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Chung Ng, M.D.
Los Angeles, CA · $121 in drug and device payments (2025) · (213) 620-1781
Dr. Cindy Nguyen
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 794-9830
Dr. Cindy Puga, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (888) 499-9303
Dr. Claire Drolen
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Clarence Braddock, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-6232
Dr. Claudine Armand, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 996-9355
Dr. Clemens Hong, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 288-8488
Dr. Connor Vuong
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9643
Dr. Cory Wagner, MD
Los Angeles, CA · $223 in drug and device payments (2025) · (310) 423-7494
Dr. Cozzette Lyons, MD
Los Angeles, CA · $52 in drug and device payments (2025) · (323) 564-4331
Dr. Craig Joseph, MD
Los Angeles, CA · $176 in drug and device payments (2025) · (310) 938-2277
Dr. Cynthia Aguilera, MD
Los Angeles, CA · $122 in drug and device payments (2025) · (213) 747-5542
Dr. Cynthia Gutierrez, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (805) 698-0544
Dr. Cynthia Ho, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-6571
Dr. Damon Forbes, M.D.
Los Angeles, CA · $16 in drug and device payments (2025) · (615) 499-1551
Dr. Dana Eisenman, M.D.
Los Angeles, CA · $55 in drug and device payments (2025) · Telehealth · (310) 360-7671
Dr. Dana Russell, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-1000
Dr. Daniela Fulginiti
Los Angeles, CA · No drug or device payments recorded (2025) · (818) 389-6675
Dr. Daniel Brelian, M.D.
Los Angeles, CA · $23,251 in drug and device payments (2025) · (213) 830-8960
Dr. Daniel Croymans, M.D., M.B.A., M.S.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7375
Dr. Daniel Drake, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (818) 838-4587
Dr. Daniel Fink, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 967-1884
Dr. Daniel Hyslop, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 338-2882
Dr. Daniel Keatinge, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Daniel Kim, MD
Los Angeles, CA · $64 in drug and device payments (2025) · (310) 423-2811
Dr. Danielle Ardolino, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 526-1254
Dr. Daniel Pourshalimi, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 996-9355
Dr. Daniel Sanchez, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-4083
Dr. Daniel Silver, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 804-2750
Dr. Daniel Yazdi, MD
Los Angeles, CA · $423 in drug and device payments (2025) · Telehealth · (310) 564-6147
Dr. Danilo Salandanan, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-3753
Dr. Danna Abdel-khader, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556
Dr. Darius Billingsley
Los Angeles, CA · $22 in drug and device payments (2025) · (424) 338-8000
Dr. Darren Mcdow, M.D.
Los Angeles, CA · $30 in drug and device payments (2025) · (310) 410-9325
Dr. Darren Steinberger, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (800) 954-8000
Dr. Daryl Lum, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-6301
Dr. Daryoush Yeroshalmi, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 254-5291
Dr. Dave Garg
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 825-7921
Dr. David Araya, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (805) 547-7911
Dr. David Carlisle, MD
Los Angeles, CA · $30 in drug and device payments (2025) · (310) 825-0631

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.