HealthcareDiscovery.AI / Doctors / California / Internal Medicine

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. Elena Chetver, M.D.
West Hollywood, CA · $775 in drug and device payments (2025) · Telehealth · (323) 650-2991
Dr. Erica Tran, MD
West Hollywood, CA · $123 in drug and device payments (2025) · (310) 423-6325
Dr. Eugene Kim, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5581
Dr. Evyatar Evron, MD
West Hollywood, CA · $857 in drug and device payments (2025) · (323) 866-8600
Dr. Felix Wangmang
West Hollywood, CA · $457 in drug and device payments (2025) · (972) 804-7916
Dr. Gail Grant, MD, MPH
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6229
Dr. Gelsey Goodstein, M.D.
West Hollywood, CA · $221 in drug and device payments (2025) · Telehealth · (310) 423-5581
Dr. Gina Mo
West Hollywood, CA · $124 in drug and device payments (2025) · (310) 423-5161
Dr. Grace Tan, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5161
Dr. Harris Nickowitz, MD
West Hollywood, CA · $126 in drug and device payments (2025) · (310) 423-5252
Dr. Henry Davidian, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (424) 313-8482
Dr. Hui Zhao, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5581
Dr. Humera Syeda, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3277
Dr. Ishan Naik, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (323) 866-8600
Dr. James Cordero, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5161
Dr. Jason Kirk, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · Telehealth · (310) 423-5582
Dr. Jeff Liang, MD
West Hollywood, CA · $900 in drug and device payments (2025) · (916) 803-6298
Dr. Jeffrey Grant, MD
West Hollywood, CA · $48 in drug and device payments (2025) · (310) 659-4511
Dr. Jennifer Cai, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5161
Dr. Jennifer Choi, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · Telehealth · (310) 967-1884
Dr. Jerry Garcia Medrano, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Jessica Yoon, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3277
Dr. John Fernandez
West Hollywood, CA · No drug or device payments recorded (2025) · (323) 212-5404
Dr. Jonathan Busam
West Hollywood, CA · $125 in drug and device payments (2025) · (310) 423-5161
Dr. Joshua Diamond, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3277
Dr. Joshua Lewis, M.D.
West Hollywood, CA · $309 in drug and device payments (2025) · Telehealth · (310) 295-2255
Dr. Joshua Rushakoff, MD, MPP
West Hollywood, CA · $5 in drug and device payments (2025) · (310) 423-6325
Dr. Justin Sagami, DO
West Hollywood, CA · $21 in drug and device payments (2025) · (323) 866-8600
Dr. Kambiz Vahabzadeh, MD
West Hollywood, CA · $2,607 in drug and device payments (2025) · Telehealth · (310) 423-5581
Dr. Kamran Kalpari, M.D.
West Hollywood, CA · $1,185 in drug and device payments (2025) · Telehealth · (310) 659-0123
Dr. Karim Ibrahim, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6325
Dr. Kelly Lo, M.D.
West Hollywood, CA · $168 in drug and device payments (2025) · (310) 423-5252
Dr. Kevin Cyr, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (180) 023-3277
Dr. Kinan Bachour, MD
West Hollywood, CA · $37 in drug and device payments (2025) · (310) 248-8300
Dr. Kunal Shah, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-4100
Dr. Lauren Schlussel, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5252
Dr. Lili Shek, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3277
Dr. Liza Raffi
West Hollywood, CA · No drug or device payments recorded (2025) · Telehealth · (310) 423-6325
Dr. Long-co Nguyen, M.D.
West Hollywood, CA · $324 in drug and device payments (2025) · (310) 423-5252
Dr. Louie Cao, MD
West Hollywood, CA · $41 in drug and device payments (2025) · (310) 423-6325
Dr. Makiko Sawada, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5581
Dr. Margaret Wei, M.D.
West Hollywood, CA · $237 in drug and device payments (2025) · (310) 423-3277
Dr. Mariam Fazel
West Hollywood, CA · $21 in drug and device payments (2025) · (310) 423-6325
Dr. Maria Scremin
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-4612
Dr. Maxwell Thomas, M.D.
West Hollywood, CA · $1,256 in drug and device payments (2025) · Telehealth · (323) 525-1118
Dr. Megan Grant, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (323) 866-8600
Dr. Melanie Chen, MD, MPH
West Hollywood, CA · $626 in drug and device payments (2025) · (310) 423-5161
Dr. Melissa Serrano, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3277
Dr. Michael Albert
West Hollywood, CA · $722 in drug and device payments (2025) · Telehealth · (310) 423-5161
Dr. Min Lee, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5161

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

Related

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.