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 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. Arek Manugian, MDStanford, CA · $27 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Arman Odabas, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Arun BurraStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-5948 Dr. Ashwin NayakStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Asma Bahrami, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Baffour Kyerematen, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Baldeep Singh, MDStanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Belinda Jump, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 498-5710 Dr. Benjamin Jacob, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Benjamin Weia, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Benny Gavi, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Betsy Yang, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Birju Patel, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Bo Sun, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Brian Dietrich, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Brian Kobilka, M.D.Stanford, CA · $2,466 in drug and device payments (2025) ·
(650) 723-7069 Dr. Brian Linde, MDStanford, CA · $250 in drug and device payments (2025) ·
(650) 723-4000 Dr. Brooke Cotter, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Bryant Lin, M.D.Stanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Burak Alsan, MDStanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Bushra Komal, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Byron Crowe, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Caitlin Parmer-chow, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Can Chen, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Casey Ren, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Cassandra Gross, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Charles Liao, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6961 Dr. Cheryl Bates, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Chetan Ambastha, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Christian Eversull, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Christina Lin, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Christine Santiago, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Christopher Babu, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Christopher Calkins, MDStanford, CA · $37 in drug and device payments (2025) ·
(650) 723-5948 Dr. Christopher Llerena, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Christopher Sharp, MDStanford, CA · $100 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Christopher Woo, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Chwen-yuen Chen, MDStanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Clarissa Doi, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Connie Chen, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Cynthia Tsai, MDStanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Daniel Deporre, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Darren Tayama, M.D.Stanford, CA · $135 in drug and device payments (2025) ·
(650) 723-6661 Dr. David Chang, M.D.Stanford, CA · $66 in drug and device payments (2025) · Telehealth ·
(650) 725-4000 Dr. David Mui, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. David Svec, MD MBAStanford, CA · $100 in drug and device payments (2025) ·
(650) 723-4000 Dr. Deborah Kado, MDStanford, CA · $149 in drug and device payments (2025) ·
(650) 723-4000 Dr. Derek Liu, MDStanford, CA · $153 in drug and device payments (2025) ·
(650) 723-4000 Dr. De Tran, MDStanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Devika Das, MDStanford, CA · $67 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 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.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
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.
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