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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. Sarvesh Parikh, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 947-8478
Dr. Shahram Ghanem, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-7070
Dr. Sheela Raja, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 945-7252
Dr. Sonal Shah, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Sy Oang, D.O.
Whittier, CA · $16 in drug and device payments (2025) · Telehealth · (562) 947-8478
Dr. Telahun Zewdie, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Tracey Kim, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Walter Le
Whittier, CA · $3,870 in drug and device payments (2025) · (562) 696-1104
Dr. Walter Pryce, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 464-4717
Dr. William Wang, D.O.
Whittier, CA · No drug or device payments recorded (2025) · Telehealth · (562) 947-1669
Dr. Cynthia Recinto, M.D.
Wildomar, CA · $282 in drug and device payments (2025) · (570) 971-8731
Dr. Danny Nguyen, D.O
Wildomar, CA · No drug or device payments recorded (2025) · (951) 304-7187
Dr. Elvis Chernyshov
Wildomar, CA · No drug or device payments recorded (2025) · (951) 698-8821
Dr. Jee-hyon Park, M.D.
Wildomar, CA · No drug or device payments recorded (2025) · (866) 206-2983
Dr. Kevin Chandrasena
Wildomar, CA · No drug or device payments recorded (2025) · (866) 984-7483
Dr. Muhammad Tayyab Tahir, MD
Wildomar, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Norman Orr, D.O.
Wildomar, CA · No drug or device payments recorded (2025) · (951) 304-7187
Dr. Pranav Barve, M.D.
Wildomar, CA · $1,723 in drug and device payments (2025) · Telehealth · (951) 698-8821
Dr. Priyanka Patel, M.D.
Wildomar, CA · $132 in drug and device payments (2025) · (510) 517-8755
Dr. Purnima Patel, MD
Wildomar, CA · No drug or device payments recorded (2025) · (951) 698-8821
Dr. Reenaben Patel, MD
Wildomar, CA · $460 in drug and device payments (2025) · Telehealth · (951) 696-5837
Dr. Trang Nguyen, D.O.
Wildomar, CA · No drug or device payments recorded (2025) · (951) 304-7187
Dr. Benjamin Jeuk, M.D.
Willits, CA · No drug or device payments recorded (2025) · (707) 459-6115
Dr. Bruce Andich, MD
Willits, CA · No drug or device payments recorded (2025) · (707) 459-6115
Dr. Claudia Petruncio, DO
Willits, CA · No drug or device payments recorded (2025) · (707) 459-6115
Dr. Glenn Rogers, M.D.
Willits, CA · No drug or device payments recorded (2025) · (707) 459-6861
Dr. John Williams, D.O.
Willits, CA · $374 in drug and device payments (2025) · (707) 459-5585
Dr. Emma Trejo, MD
Wilmington, CA · No drug or device payments recorded (2025) · (310) 522-8700
Dr. Homan Siman, MD
Wilmington, CA · $46 in drug and device payments (2025) · Telehealth · (310) 835-7215
Dr. Stephen Rich, MD
Windsor, CA · No drug or device payments recorded (2025) · (707) 433-5494
Dr. Reginald Coates, MD
Winnetka, CA · No drug or device payments recorded (2025) · (818) 340-6658
Dr. Kevin Kohler, M.D.
Winterhaven, CA · No drug or device payments recorded (2025) · Telehealth · (760) 572-4100
Dr. Annemarie Hargadon, M.D.
Winters, CA · No drug or device payments recorded (2025) · Telehealth · (530) 795-1110
Dr. Michael Tang, MD
Winters, CA · $146 in drug and device payments (2025) · Telehealth · (530) 334-7184
Dr. Carolina Quezada, MD
Woodlake, CA · No drug or device payments recorded (2025) · (559) 564-0100
Dr. Rocio Medina, M.D.
Woodlake, CA · $37 in drug and device payments (2025) · (559) 564-1800
Dr. Alexander Chen, M.D.
Woodland, CA · No drug or device payments recorded (2025) · Telehealth · (530) 668-2600
Dr. Amanpreet Kaur, M.D.
Woodland, CA · No drug or device payments recorded (2025) · (530) 666-1631
Dr. Chu Kwan Lau, MD
Woodland, CA · No drug or device payments recorded (2025) · (530) 666-1631
Dr. Eduardo Zapata, D.O.
Woodland, CA · No drug or device payments recorded (2025) · Telehealth · (530) 666-1631
Dr. Liana Turkot, MD
Woodland, CA · $109 in drug and device payments (2025) · Telehealth · (530) 666-1631
Dr. Monika Kraft, M.D.
Woodland, CA · No drug or device payments recorded (2025) · (530) 662-3961
Dr. Sabrina Tan, M.D.
Woodland, CA · No drug or device payments recorded (2025) · Telehealth · (530) 750-5904
Dr. Stuart Linne, M.D.
Woodland, CA · No drug or device payments recorded (2025) · (530) 666-1631
Dr. Syed Khasimuddin, M.D.
Woodland, CA · No drug or device payments recorded (2025) · (530) 662-3961
Dr. Timothy Davis, D.O.
Woodland, CA · $28 in drug and device payments (2025) · (530) 668-2600
Dr. Uma Kunda, M.D.
Woodland, CA · No drug or device payments recorded (2025) · (530) 662-3961
Dr. Aiting Tung, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Alex Sheng, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Allan Bledstein, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000

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.