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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. Betty Ho, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Bradley Perkins, MD
Redwood City, CA · No drug or device payments recorded (2025) · (866) 452-7487
Dr. Butchau Lo, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Carlos Rivas, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (510) 437-4800
Dr. Carter Chang, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Christopher Dunn, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-0581
Dr. Christopher Rodriguez, M.D.,M.S.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2015
Dr. Craig Hoffman, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. David Dorrance, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 369-1766
Dr. Deepa Srinivasan, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 298-8774
Dr. Deepti Baheti, M.B.B.S
Redwood City, CA · $15 in drug and device payments (2025) · (830) 890-3477
Dr. Denise Brown, M.D.
Redwood City, CA · $24 in drug and device payments (2025) · (650) 369-5811
Dr. Dung Thai, MD, PH D
Redwood City, CA · No drug or device payments recorded (2025) · (415) 225-9338
Dr. Ellen Sullivan, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Eric Mebane, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Ganga Nadella, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 298-8774
Dr. Gary Aron, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 298-8774
Dr. Gary Stein, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Gerald Cera, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 599-9491
Dr. Hailing Fei, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 368-2888
Dr. Henry Braa, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Henry Brodkin, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Herbert Neuman, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 620-9711
Dr. I-chun Ou, MD
Redwood City, CA · No drug or device payments recorded (2025) · Telehealth · (650) 358-7028
Dr. Jayme Laurencelle, MD
Redwood City, CA · No drug or device payments recorded (2025) · (240) 693-3281
Dr. Jeanette Aviles, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 573-2222
Dr. Jennifer Low, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 550-0085
Dr. John Kapoor, M.D., PH.D.
Redwood City, CA · $15 in drug and device payments (2025) · Telehealth · (650) 299-2000
Dr. John Schulte, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 421-2561
Dr. Jonathan Zweig, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Jordana Blachman, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Joshua Suelflow, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 367-5659
Dr. Julie Wu, MD
Redwood City, CA · $405 in drug and device payments (2025) · (650) 299-2000
Dr. Justin Lotfi, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 796-1132
Dr. Kalpana Srinivasan, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Khorshed Madan, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · Telehealth · (888) 663-6331
Dr. Kirth Cucueco, MD
Redwood City, CA · No drug or device payments recorded (2025) · Telehealth · (650) 299-2015
Dr. Kristina Kunes, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 723-6601
Dr. Kristin Nielsen, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 367-5659
Dr. Linda Leung, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Linda Shiue, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 598-3160
Dr. Manher Joshi, MD
Redwood City, CA · No drug or device payments recorded (2025) · (617) 955-9370
Dr. Marie Denise Kan, MD
Redwood City, CA · $17 in drug and device payments (2025) · Telehealth · (650) 727-1940
Dr. Marie President, M.D
Redwood City, CA · $220 in drug and device payments (2025) · Telehealth · (650) 303-4405
Dr. Meenakshi Jain, MD
Redwood City, CA · $232 in drug and device payments (2025) · (650) 299-2000
Dr. Megan Byrne, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 578-7141
Dr. Mitchell Wong, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Mojgan Ebadi, M.D.
Redwood City, CA · $668 in drug and device payments (2025) · (650) 568-5800
Dr. Mona Litvak, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 298-8774
Dr. Nakia Chung, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2537

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.