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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. Xuchen Hu
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7375
Dr. Yakov Treyzon, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 930-1331
Dr. Yan Kim, M.D.
Los Angeles, CA · $150 in drug and device payments (2025) · (323) 857-2000
Dr. Yatindra Patel
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-8000
Dr. Yeny Chavarria Banegas
Los Angeles, CA · $198 in drug and device payments (2025) · (818) 471-5591
Dr. Yervand Chakryan, DO, MS
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556
Dr. Yihan Chen
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-9111
Dr. Yoko Ozawa, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 857-2000
Dr. Yongchul Huh, MD
Los Angeles, CA · $452 in drug and device payments (2025) · (213) 384-1717
Dr. Youjong Ko, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 253-2677
Dr. Young-jik Lee, M.D.
Los Angeles, CA · $1,520 in drug and device payments (2025) · (213) 383-9388
Dr. Young Kim, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 383-3994
Dr. Young Song, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 563-4991
Dr. Yulionas Gayauskas, M.D.
Los Angeles, CA · $44 in drug and device payments (2025) · Telehealth · (310) 695-9911
Dr. Yuliya Zektser, MD
Los Angeles, CA · $165 in drug and device payments (2025) · (310) 206-0644
Dr. Yung Chun, M.D.
Los Angeles, CA · $28 in drug and device payments (2025) · (323) 954-1111
Dr. Yusaku Shino, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (888) 505-0043
Dr. Yvette Scott, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 478-3711
Dr. Zab Mosenifar, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 423-1888
Dr. Zachary Marks, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 653-1990
Dr. Zahid Abdou, M.D.
Los Angeles, CA · $467 in drug and device payments (2025) · Telehealth · (323) 987-1362
Dr. Zainab Saadi
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 265-1998
Dr. Zejin Zhu, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 794-1276
Dr. Zhaoping Li, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 825-7922
Dr. Faizan Malik, M.D.
Los Angles, CA · $15 in drug and device payments (2025) · (310) 423-5161
Dr. Gopi Krishna Polasa Venkata, MD
Los Banos, CA · No drug or device payments recorded (2025) · (209) 826-2222
Dr. Jason Mevi, MD
Los Banos, CA · No drug or device payments recorded (2025) · (209) 826-3200
Dr. Karthikeya Devireddy, MD
Los Banos, CA · $725 in drug and device payments (2025) · (209) 826-2222
Dr. Michael Friedlander, M.D.
Los Banos, CA · No drug or device payments recorded (2025) · (209) 826-0591
Dr. Roy Eugene Tabigo On, M.D.
Los Banos, CA · No drug or device payments recorded (2025) · Telehealth · (209) 826-2222
Dr. Santosh Khanal, MBBS
Los Banos, CA · No drug or device payments recorded (2025) · (209) 826-2222
Dr. Sina Aghaie, M.D.
Los Banos, CA · No drug or device payments recorded (2025) · (209) 826-2222
Dr. Vijay Devireddy, M.D.
Los Banos, CA · $420 in drug and device payments (2025) · (209) 826-2222
Dr. Albert Marland, M.D.
Los Gatos, CA · $793 in drug and device payments (2025) · Telehealth · (408) 358-1841
Dr. Allison Remesz, D.O.
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 426-5540
Dr. Amy Ball, M.D.
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 857-9394
Dr. Andrew Chi, MD MPH
Los Gatos, CA · $43 in drug and device payments (2025) · (408) 758-0680
Dr. Anjali Sagdeo, M.D.
Los Gatos, CA · No drug or device payments recorded (2025) · Telehealth · (408) 523-3102
Dr. Barbara Hom, MD
Los Gatos, CA · No drug or device payments recorded (2025) · Telehealth · (408) 370-7801
Dr. Beverly Barboza, M.D.
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 866-6282
Dr. Catherine Grellet, M.D.
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 358-7360
Dr. Christine Le, D.O.
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 730-6200
Dr. Darryl Hein, M.D.
Los Gatos, CA · $464 in drug and device payments (2025) · Telehealth · (408) 358-1841
Dr. Edward Brooks, MD
Los Gatos, CA · $217 in drug and device payments (2025) · Telehealth · (408) 523-3102
Dr. Edward Wong, MD
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 356-9121
Dr. Ester Kwok, MD
Los Gatos, CA · No drug or device payments recorded (2025) · Telehealth · (408) 374-1112
Dr. Forouzan Vaghar, M.D.
Los Gatos, CA · $258 in drug and device payments (2025) · (408) 354-3587
Dr. Gopi Ayer, M.D.
Los Gatos, CA · $355 in drug and device payments (2025) · Telehealth · (408) 358-1811
Dr. Helen Chang, M.D.
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 358-9917
Dr. Hemalatha Bhamidi, DO
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 426-5540

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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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.