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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. Florence Wandisan-rosete, MD
Tracy, CA · $1,035 in drug and device payments (2025) · Telehealth · (209) 836-4920
Dr. Gautami Agastya, MD
Tracy, CA · No drug or device payments recorded (2025) · Telehealth · (209) 833-7555
Dr. Gurpartap Sidhu
Tracy, CA · No drug or device payments recorded (2025) · Telehealth · (209) 956-6615
Dr. Hla Win, MD
Tracy, CA · No drug or device payments recorded (2025) · (209) 835-4141
Dr. James Stephen, MD
Tracy, CA · No drug or device payments recorded (2025) · (209) 839-3200
Dr. Jerry Chien, MD
Tracy, CA · No drug or device payments recorded (2025) · (209) 650-4000
Dr. Juan Vergara Saavedra, M.D.
Tracy, CA · $145 in drug and device payments (2025) · Telehealth · (209) 832-0535
Dr. Michael Hurst, DO
Tracy, CA · $20 in drug and device payments (2025) · (209) 832-5500
Dr. Mitchell Seitz, M.D.
Tracy, CA · No drug or device payments recorded (2025) · Telehealth · (209) 833-7135
Dr. Neel Shah, M.D.
Tracy, CA · $1,263 in drug and device payments (2025) · Telehealth · (209) 833-0525
Dr. Puneet Grewal, M.D.
Tracy, CA · $777 in drug and device payments (2025) · Telehealth · (209) 835-4232
Dr. Robert Williams, M.D.
Tracy, CA · No drug or device payments recorded (2025) · (209) 832-0535
Dr. Rollie Rosete, MD
Tracy, CA · No drug or device payments recorded (2025) · (209) 836-4920
Dr. Satinder Singh, D.O.
Tracy, CA · No drug or device payments recorded (2025) · Telehealth · (209) 832-0535
Dr. Satvinder Sachdeva, MD
Tracy, CA · $247 in drug and device payments (2025) · (209) 839-3200
Dr. Shaheen Jawahar, MD
Tracy, CA · No drug or device payments recorded (2025) · (209) 832-0535
Dr. Sherry Han, MD
Tracy, CA · No drug or device payments recorded (2025) · (209) 839-3200
Dr. Sumbella Baqai, M.D.
Tracy, CA · No drug or device payments recorded (2025) · (209) 569-7408
Dr. Sunil Patel, MD
Tracy, CA · $2,249 in drug and device payments (2025) · Telehealth · (209) 833-0525
Dr. Tabish Jalal
Tracy, CA · No drug or device payments recorded (2025) · (209) 833-2367
Dr. Thao Pham
Tracy, CA · $120 in drug and device payments (2025) · Telehealth · (098) 320-5352
Dr. Trisha Singh, MD
Tracy, CA · No drug or device payments recorded (2025) · (209) 373-2829
Dr. Usman Ali, M.D.
Tracy, CA · No drug or device payments recorded (2025) · (209) 832-8700
Dr. Aikkachai Jiras, M.D.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-3687
Dr. Allan Andres, M.D.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-3078
Dr. Anita Pechenenko, M.D.
Travis Afb, CA · $48 in drug and device payments (2025) · (707) 424-1110
Dr. Christopher Dennis, D.O.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-2300
Dr. Devon Richardson, MD
Travis Afb, CA · $169 in drug and device payments (2025) · (707) 423-3000
Dr. Dylan Walker, MD
Travis Afb, CA · $14 in drug and device payments (2025) · (707) 423-7342
Dr. Eric Williamson, MD
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-7342
Dr. Francis Essien, DO
Travis Afb, CA · $186 in drug and device payments (2025) · Telehealth · (707) 423-7342
Dr. George Estes, M.D.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-5445
Dr. James Doyle, M.D.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-7300
Dr. Jonathan Eilers
Travis Afb, CA · $30 in drug and device payments (2025) · (707) 423-7342
Dr. Joseph Mcneal, MD
Travis Afb, CA · $63 in drug and device payments (2025) · (707) 423-7342
Dr. Mark Brown, DO
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-7342
Dr. Monika Kc, DO
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-7342
Dr. Nuntaya Jiras, M.D.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 437-1802
Dr. Randy Sid, M.D.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-7342
Dr. Rinky Walia, M.D.
Travis Afb, CA · $353 in drug and device payments (2025) · Telehealth · (707) 423-3000
Dr. Robert Marshall, MD
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-7342
Dr. Ryan Cook
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-3000
Dr. Samuel Farrell, MD
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-3000
Dr. Timothy Wall
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-3000
Dr. Wendie Li, MD
Travis Afb, CA · $257 in drug and device payments (2025) · (707) 423-7300
Dr. Woody Taves, D.O.
Travis Afb, CA · No drug or device payments recorded (2025) · (916) 561-7793
Dr. Zachary Wills, DO
Travis Afb, CA · $34 in drug and device payments (2025) · (707) 423-3048
Dr. Connor Lemos
Truckee, CA · No drug or device payments recorded (2025) · (530) 582-6205
Dr. Gregory Tirdel, MD
Truckee, CA · No drug or device payments recorded (2025) · (530) 582-6400
Dr. Joseph Lombard, MD
Truckee, CA · No drug or device payments recorded (2025) · (530) 582-1212

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.