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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. Nagasamudra Ashok, M.D.
San Jacinto, CA · $22 in drug and device payments (2025) · Telehealth · (951) 487-2550
Dr. Neil Katchman, D.O.
San Jacinto, CA · No drug or device payments recorded (2025) · Telehealth · (951) 487-2550
Dr. Vidyamohan Balu
San Jacinto, CA · $341 in drug and device payments (2025) · Telehealth · (951) 654-9367
Dr. Aarti Srinivasan, M.D.
San Jose, CA · $125 in drug and device payments (2025) · Telehealth · (408) 366-0595
Dr. Adrian Garcia
San Jose, CA · No drug or device payments recorded (2025) · (909) 610-0226
Dr. Aiza Anwar
San Jose, CA · No drug or device payments recorded (2025) · (916) 687-1013
Dr. Albert Liang, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (650) 493-5000
Dr. Albert Lin, MD
San Jose, CA · $125 in drug and device payments (2025) · (408) 885-4141
Dr. Albert Shen, M.D.
San Jose, CA · $131 in drug and device payments (2025) · (408) 296-9800
Dr. Alexander Chyorny, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 808-5200
Dr. Alexander Korsunsky, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 517-0560
Dr. Alexandra Tran-perez, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-6006
Dr. Alex Guzner
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Alfonso Banuelos, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-4001
Dr. Alireza Mofrad
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Alison Dowse, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 366-0595
Dr. Alpana Verma-alag, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Ammara Majeed, MD
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 972-3000
Dr. Andrea Cervenka, MD
San Jose, CA · $28 in drug and device payments (2025) · (408) 885-5249
Dr. Angela Suarez, MD
San Jose, CA · $122 in drug and device payments (2025) · (408) 885-5000
Dr. Angela Xavier, M.D.
San Jose, CA · $117 in drug and device payments (2025) · Telehealth · (408) 366-0595
Dr. Anisa Rangwala, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 937-2218
Dr. Anitha Gaddipati, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 808-5200
Dr. Anjali Dhar, MD
San Jose, CA · $424 in drug and device payments (2025) · (650) 906-8499
Dr. Annapurna Sathi, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Annemarie Lam, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 259-5000
Dr. Antara Barua, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Anusha Bhargavi Pinjala, MBBS
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. An Vo, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 781-9312
Dr. Arpita Joshi, M.B.B.S.
San Jose, CA · No drug or device payments recorded (2025) · (408) 947-2500
Dr. Arthur Feldman, M.D.
San Jose, CA · $132 in drug and device payments (2025) · Telehealth · (408) 871-3400
Dr. Arthur Wu, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Arunasri Kelleti, M.D.,
San Jose, CA · No drug or device payments recorded (2025) · (408) 445-3400
Dr. Assees Khan, MD
San Jose, CA · $32 in drug and device payments (2025) · (408) 259-5000
Dr. Assefa Worku, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Asuncion Martinez, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Audrey Liu, MD
San Jose, CA · $181 in drug and device payments (2025) · Telehealth · (408) 885-5000
Dr. Azita Yavari, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 347-4051
Dr. Babitha Nagarajan, M.D
San Jose, CA · $128 in drug and device payments (2025) · Telehealth · (408) 885-5000
Dr. Bali Gill, MD
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 445-4010
Dr. Barbara Aguilar, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Barbara Fu, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 924-6125
Dr. Becky Luo, M.D.
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 885-5000
Dr. Benjamin Hernandez, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 918-2600
Dr. Ben Wong, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-3124
Dr. Bernette Tsai, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Bien Nguyen, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 972-7000
Dr. Binu K.c., MD
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 972-7000
Dr. Boo Lee, MD
San Jose, CA · $1,585 in drug and device payments (2025) · Telehealth · (408) 977-1310
Dr. Brendan Tran, DO
San Jose, CA · $1,297 in drug and device payments (2025) · Telehealth · (408) 254-9192

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.