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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. Richard Anderson, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 843-4192
Dr. Richard Kroop, MD
Burbank, CA · No drug or device payments recorded (2025) · (818) 567-6550
Dr. Roberto Beaton, M.D.
Burbank, CA · $73 in drug and device payments (2025) · Telehealth · (818) 843-6611
Dr. Robert Rivera, MD
Burbank, CA · $734 in drug and device payments (2025) · Telehealth · (818) 848-1555
Dr. Ronald Schott, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 841-2880
Dr. Ryan Clagg
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 843-9020
Dr. Sakiba Khan
Burbank, CA · No drug or device payments recorded (2025) · (818) 556-2700
Dr. San Wai, M.D.,FACP,MBBS
Burbank, CA · $113 in drug and device payments (2025) · Telehealth · (818) 391-1028
Dr. Sharad Patel, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 842-7778
Dr. Steven Ando, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 556-2700
Dr. Stewart Reed
Burbank, CA · No drug or device payments recorded (2025) · (818) 843-9020
Dr. Susanna Lansangan, M.D.
Burbank, CA · $593 in drug and device payments (2025) · (818) 557-2671
Dr. Tejas Patel, MD
Burbank, CA · $2,093 in drug and device payments (2025) · Telehealth · (818) 842-6400
Dr. Teresa Sligh, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 558-7555
Dr. Teresita Maqueda, M.D.
Burbank, CA · $689 in drug and device payments (2025) · (818) 563-1400
Dr. Trinidad Aguilar, M.D.
Burbank, CA · $93 in drug and device payments (2025) · (818) 845-7228
Dr. Tu Duong, D.O.
Burbank, CA · $174 in drug and device payments (2025) · Telehealth · (818) 843-6611
Dr. Vahe Gyulnazaryan, M.D.
Burbank, CA · No drug or device payments recorded (2025) · Telehealth · (818) 650-0111
Dr. Vladimir Ayvazyan, M.D.
Burbank, CA · $847 in drug and device payments (2025) · (818) 972-1000
Dr. Yeong An Sheu, M.D.
Burbank, CA · No drug or device payments recorded (2025) · (818) 845-1854
Dr. Zohrab Keshishian, MD
Burbank, CA · No drug or device payments recorded (2025) · (818) 246-8000
Dr. Aditi Chandra, M.D.
Burlingame, CA · $645 in drug and device payments (2025) · (650) 259-1674
Dr. Aditi Patel, D.O
Burlingame, CA · $490 in drug and device payments (2025) · (650) 696-5400
Dr. Aileen Nguyen, MD
Burlingame, CA · No drug or device payments recorded (2025) · (650) 696-5400
Dr. Aileen Whelan, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Alexander Lakowsky, M.D.
Burlingame, CA · $462 in drug and device payments (2025) · Telehealth · (831) 566-5091
Dr. Andra Batlin, M.D.
Burlingame, CA · $383 in drug and device payments (2025) · Telehealth · (650) 552-8180
Dr. Andrew Dao, MD
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Anuradha Reddy, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Bina Lu, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Brian Roach, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · (650) 259-9480
Dr. Cecilia Wan, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Chhavi Mehta, MD
Burlingame, CA · $78 in drug and device payments (2025) · Telehealth · (650) 652-8500
Dr. Daniel Glatt, MD
Burlingame, CA · $2,753 in drug and device payments (2025) · (650) 552-8100
Dr. Eric Kaldor, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · (650) 315-5313
Dr. Esi Nkyekyer, MD, MPH
Burlingame, CA · No drug or device payments recorded (2025) · (800) 505-5972
Dr. Flora Chen, MD
Burlingame, CA · No drug or device payments recorded (2025) · (650) 259-1674
Dr. Hala Ali, MD
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Heidi Stroessner-johnson, MD
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Janet Melnyk, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Jeanne Lee, M.D.
Burlingame, CA · $236 in drug and device payments (2025) · Telehealth · (650) 652-8500
Dr. Jennifer Funk, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · (650) 696-5400
Dr. Jinesh Patel, MD
Burlingame, CA · No drug or device payments recorded (2025) · (650) 652-8420
Dr. Jocelyn Tseng
Burlingame, CA · $111 in drug and device payments (2025) · (650) 652-8500
Dr. Justin Yu, M.D.
Burlingame, CA · $28 in drug and device payments (2025) · (650) 696-5400
Dr. Kacy Church, M.D.
Burlingame, CA · $94 in drug and device payments (2025) · Telehealth · (650) 652-8282
Dr. Kelly Fung, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Khushdeep Grewal, M.D.
Burlingame, CA · $57 in drug and device payments (2025) · (650) 696-3520
Dr. Kimberly Jong, M.D.
Burlingame, CA · No drug or device payments recorded (2025) · Telehealth · (650) 652-8500
Dr. Kris Kealey, MD
Burlingame, CA · $422 in drug and device payments (2025) · Telehealth · (888) 663-6331

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.