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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. Peter Lee, D.O.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-7215
Dr. Pratheepa Singh, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-3471
Dr. Preeta Chidambaran, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1111
Dr. Priyanka Jain, M.D
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Priya Saraf, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Rakesh Chaudhary, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Ramya Chitters, MD
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 851-1000
Dr. Randell Camantigue, MD
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 851-1000
Dr. Reena Eshwar, MD CMD MSPH
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-4164
Dr. Richa Ashar, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Richard Delfs, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Richard Hopf, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Rupinder Matharu, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Ryon Maland, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-3830
Dr. Salila Rajput, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Sameer Arora, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Samira Vedantam, M.D
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 241-3801
Dr. Santa Suryaraman, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Sara Nouri, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 236-6400
Dr. Saroja Dandamudi, M.D.
Santa Clara, CA · $125 in drug and device payments (2025) · Telehealth · (408) 241-3801
Dr. Serena Karmally, DO
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-3836
Dr. Sergio Sapetto, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Shailan Shah, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Sheeja Das, MD
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 851-1000
Dr. Sheryl Sun, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Shirley Ye, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Shreyas Kudrimoti
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Simrat Hansra, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 554-9800
Dr. Sonali Jain, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Sridevi Kolla, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Suneetha Sampath, MBBS, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (669) 888-5614
Dr. Susan Maclean, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Susan Yang, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Svetlana Tounkel, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Thanh Dao, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Tiffany Tran, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 554-9800
Dr. Tony Huynh
Santa Clara, CA · $15 in drug and device payments (2025) · (408) 720-6668
Dr. Uma Kantamuneni, M.D
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 564-7469
Dr. Uma Zamvar, MD
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 851-1000
Dr. Varsha Joshi, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Vidhi Shah, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 241-2801
Dr. Vijay Jain, MD
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 241-3801
Dr. Vinayaka Malakkla, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-3830
Dr. Wendy Chi, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Xi Zhang
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Xuan Valdez, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-7600
Dr. Yelena Shaanova, MD
Santa Clara, CA · No drug or device payments recorded (2025) · Telehealth · (408) 241-3801
Dr. Yi-fen Chen, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Yoon Cho, M.D.
Santa Clara, CA · $319 in drug and device payments (2025) · (408) 249-1212
Dr. Ahsan Memon, MD
Santa Clarita, CA · $129 in drug and device payments (2025) · (860) 726-8018

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.