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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. Edeane Matsumoto, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 289-5320
Dr. Eliza Lewine, MD
San Jose, CA · $159 in drug and device payments (2025) · (408) 972-3000
Dr. Eloka Ikebudu, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (310) 489-9708
Dr. Emiliano Ramos, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 451-6198
Dr. Eric Hsiao, MD
San Jose, CA · $22 in drug and device payments (2025) · Telehealth · (408) 885-2050
Dr. Estelita Carandang, M.D.
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 979-9949
Dr. Esther Lee, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Esther Luo, M.D.
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 885-7724
Dr. Farah Sani, D.O.
San Jose, CA · $58 in drug and device payments (2025) · Telehealth · (408) 358-4300
Dr. Foroozan Famoori, MD
San Jose, CA · No drug or device payments recorded (2025) · (888) 357-4188
Dr. Frank Shin, M.D.
San Jose, CA · $162 in drug and device payments (2025) · (408) 366-0405
Dr. Gabriella Busco
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Ganna Borodina, MD, PHD
San Jose, CA · No drug or device payments recorded (2025) · (408) 685-8178
Dr. George Yeh, M.D.
San Jose, CA · $239 in drug and device payments (2025) · (408) 298-4495
Dr. Gerald Diaz, M.D.
San Jose, CA · $14 in drug and device payments (2025) · (408) 368-6498
Dr. Gerardo Solorio Cortes, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Grace Tee, M.D
San Jose, CA · $2,488 in drug and device payments (2025) · Telehealth · (408) 378-6131
Dr. Gurjit Mundh, DO
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5110
Dr. Hanh Nguyen, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 531-8572
Dr. Hankyu Chung, M.D.
San Jose, CA · $19 in drug and device payments (2025) · (408) 297-8600
Dr. Haritha Rachamallu, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Harleen Sahni, MD
San Jose, CA · $60 in drug and device payments (2025) · (408) 885-0000
Dr. Harold Hubis, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 268-9507
Dr. Harry Cornbleet, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 924-6124
Dr. Hien Pham, M.D
San Jose, CA · No drug or device payments recorded (2025) · (408) 288-9826
Dr. Hong Bui, M.D.
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 270-9642
Dr. Hubert Wang, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Huma Aziz, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 871-3400
Dr. Huy Ngo
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Inna Belenky, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Inna Ravkin, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Isaure Hostetter, MD MPH
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Jack Ackerman, DO
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 347-2002
Dr. Jaco Fishenfeld, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 926-2200
Dr. Jacqueline Alba-nguyen, MD, MPH
San Jose, CA · No drug or device payments recorded (2025) · (408) 272-6050
Dr. Jacqueline Botros, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Jagpreet Bhatia, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. James Yeh, MD
San Jose, CA · $100 in drug and device payments (2025) · (408) 298-4495
Dr. Jamie Nguyen, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 888-5500
Dr. Janet Kim, M.D.
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 885-5935
Dr. Janette Lin, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 795-3888
Dr. Janhavi Gudal, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5611
Dr. Janice Moy, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Jaskiran Mann, DO
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Jason Vuong, MD
San Jose, CA · $125 in drug and device payments (2025) · Telehealth · (408) 885-5000
Dr. Jean Luong, M.D
San Jose, CA · $4,400 in drug and device payments (2025) · Telehealth · (408) 279-8171
Dr. Jelyca Ormond
San Jose, CA · No drug or device payments recorded (2025) · (408) 436-3300
Dr. Jen Eng, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-6305
Dr. Jennifer Lee
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5110
Dr. Jennifer Tong, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000

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.