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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. Tinh-uyen Le, MD
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 972-7000
Dr. Todd Fong, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 977-4423
Dr. Ton Hoang, MD
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 972-7000
Dr. Tracy Tram, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 926-2420
Dr. Trang Do, M.D.
San Jose, CA · $2,636 in drug and device payments (2025) · (408) 975-9800
Dr. Tuan Le, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 531-1555
Dr. Tuan Nguyen, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 259-0737
Dr. Umaima Marvi, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Vaishali Geedigunta
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 866-4000
Dr. Valeh Aminian, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Valerie Le, FNP-C
San Jose, CA · $286 in drug and device payments (2025) · (408) 223-8818
Dr. Vanita Mistry
San Jose, CA · No drug or device payments recorded (2025) · (888) 334-1000
Dr. Victor Corsiglia, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 278-3228
Dr. Vijaya Dudyala, M.D
San Jose, CA · $789 in drug and device payments (2025) · (408) 866-4000
Dr. Vijay Kotecha
San Jose, CA · No drug or device payments recorded (2025) · (408) 503-7650
Dr. Vincent Chang
San Jose, CA · No drug or device payments recorded (2025) · (408) 886-8754
Dr. Vinh Nguyen, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 254-1794
Dr. Visakha Goonewardena, M.D
San Jose, CA · No drug or device payments recorded (2025) · (408) 993-1500
Dr. Viviana Mendez, MD
San Jose, CA · No drug or device payments recorded (2025) · (888) 334-1000
Dr. Vu Nguyen, MD
San Jose, CA · $122 in drug and device payments (2025) · (408) 254-6320
Dr. Wei Chen, MD
San Jose, CA · $22 in drug and device payments (2025) · Telehealth · (408) 885-5000
Dr. Wei Hao Zheng, MD, MS
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Wei Ye, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. William Jensen, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-6307
Dr. William Tsang, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Wonhee Woo
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-3380
Dr. Yael Moss, D.O.
San Jose, CA · No drug or device payments recorded (2025) · (408) 396-5107
Dr. Yelena Kabanskaya, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 559-2011
Dr. Yi-chao Huang, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-6300
Dr. Yinn Htwe, M.D
San Jose, CA · No drug or device payments recorded (2025) · (408) 835-8840
Dr. Yinyu Tang, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Yixi Zhang, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (669) 577-6072
Dr. Yue Hao, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (415) 391-9686
Dr. Yuhjung Tsai
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Zheng-gang Zhang, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 993-8764
Dr. Zijun Zhao, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 529-3488
Dr. Michael Sepulveda, MD
San Juan Bautista, CA · $1,045 in drug and device payments (2025) · (831) 325-6459
Dr. Audrey Rocco-welch, MD
San Juan Capistrano, CA · No drug or device payments recorded (2025) · (949) 240-2030
Dr. Bishen Bedi, MD
San Juan Capistrano, CA · No drug or device payments recorded (2025) · (949) 296-5100
Dr. Catherine Mcmillan
San Juan Capistrano, CA · No drug or device payments recorded (2025) · (949) 443-4303
Dr. Deepa Oza, FNP-C
San Juan Capistrano, CA · No drug or device payments recorded (2025) · (949) 443-4303
Dr. Eddy Yu, MD
San Juan Capistrano, CA · No drug or device payments recorded (2025) · (949) 661-9611
Dr. Gracia Covarrubias, MD
San Juan Capistrano, CA · No drug or device payments recorded (2025) · Telehealth · (949) 661-9611
Dr. Jesus Valadez, MD
San Juan Capistrano, CA · $315 in drug and device payments (2025) · Telehealth · (949) 661-9600
Dr. Patricia Ahearn, M.D.
San Juan Capistrano, CA · $828 in drug and device payments (2025) · Telehealth · (949) 443-4303
Dr. Thuytrang Nguyen, M.D.
San Juan Capistrano, CA · No drug or device payments recorded (2025) · (949) 240-2030
Dr. Yu-hua Fang, M.D.
San Juan Capistrano, CA · $503 in drug and device payments (2025) · Telehealth · (949) 443-4303
Dr. Abhijan Banerjee, M.D.
San Leandro, CA · No drug or device payments recorded (2025) · (510) 454-1000
Dr. Anima Mathur, M.D.
San Leandro, CA · No drug or device payments recorded (2025) · (510) 454-1000
Dr. Asaf Shor, M.D.
San Leandro, CA · No drug or device payments recorded (2025) · Telehealth · (510) 454-1000

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

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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.