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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. Shawn Harrity, M.D
San Diego, CA · No drug or device payments recorded (2025) · (858) 249-5400
Dr. Sheeda Saba
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Sheelan Karim, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (508) 308-5973
Dr. Sheela Vyas, MD
San Diego, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Shelese Newmark, M.D.
San Diego, CA · $79 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Shiliang Zhang
San Diego, CA · $100 in drug and device payments (2025) · (800) 926-8273
Dr. Shyamala Karuvannur, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Silpa Reddy, D.O.
San Diego, CA · No drug or device payments recorded (2025) · (619) 286-8803
Dr. Silvia Munoz, M.D.
San Diego, CA · $17 in drug and device payments (2025) · Telehealth · (833) 574-2273
Dr. Silvia Urbina Marengo, M.D
San Diego, CA · No drug or device payments recorded (2025) · (619) 515-2300
Dr. Simerjot Jassal, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Simone Kanter, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 400-5050
Dr. Simon Ritchken, M.D.
San Diego, CA · $1,617 in drug and device payments (2025) · Telehealth · (858) 292-0108
Dr. Siu Ming Geary, M.D.
San Diego, CA · $82 in drug and device payments (2025) · Telehealth · (858) 605-7885
Dr. Solomon Greenberg, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 939-3400
Dr. Sonha Nguyen
San Diego, CA · $480 in drug and device payments (2025) · Telehealth · (858) 499-2704
Dr. Sonia Holmes, MD
San Diego, CA · No drug or device payments recorded (2025) · (281) 250-3397
Dr. Sonia Mathew, MD
San Diego, CA · $150 in drug and device payments (2025) · (619) 662-4100
Dr. Sony Vo
San Diego, CA · No drug or device payments recorded (2025) · (619) 280-7185
Dr. Soumya Kurnool, MD
San Diego, CA · $52 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Soyoung Mcfarland, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 260-7220
Dr. Spencer Hoostal, MD
San Diego, CA · $1,495 in drug and device payments (2025) · Telehealth · (619) 298-1318
Dr. Spencer Lin, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6737
Dr. Spencer Wheeler, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 832-2478
Dr. Srinu Takkallapalli, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (573) 462-6865
Dr. Sruthi Buddai, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Stacy Charat, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Stacy Schlocker, MD
San Diego, CA · $317 in drug and device payments (2025) · Telehealth · (619) 278-3340
Dr. Stanford Yee, MD
San Diego, CA · $242 in drug and device payments (2025) · (619) 528-5000
Dr. Stanley Amundson, M.D.
San Diego, CA · $122 in drug and device payments (2025) · (619) 260-0770
Dr. Stanley Salinda, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Stefan Willging, MD
San Diego, CA · $2,032 in drug and device payments (2025) · Telehealth · (619) 298-1311
Dr. Stephanie Jahnz, MD
San Diego, CA · $26 in drug and device payments (2025) · (619) 532-6400
Dr. Stephen Capon, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Stephen Leibham, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 549-4255
Dr. Stephen Selzer, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6283
Dr. Steve Chen, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 232-3582
Dr. Steven Chessler, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 657-8440
Dr. Steven Edelman, M.D.
San Diego, CA · $143,480 in drug and device payments (2025) · Telehealth · (858) 552-8585
Dr. Steven Gross, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 265-1237
Dr. Steven Li
San Diego, CA · $19 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Steven Rabkin
San Diego, CA · No drug or device payments recorded (2025) · (619) 237-1440
Dr. Steven Yung, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 294-8111
Dr. Steve Song, MD
San Diego, CA · $24 in drug and device payments (2025) · (619) 528-5000
Dr. Stuart Andersen, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 554-1212
Dr. Stuart Green, MD
San Diego, CA · $210 in drug and device payments (2025) · Telehealth · (858) 554-7272
Dr. Sujata Pullela, M.D
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-7475
Dr. Sunder Mudaliar, M.D.
San Diego, CA · $124 in drug and device payments (2025) · (858) 642-3152
Dr. Sunita Baxi, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Sunit Shah, DO
San Diego, CA · $55 in drug and device payments (2025) · Telehealth · (858) 554-7272

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.