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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. Norman Gross, M.D.
Seaside, CA · No drug or device payments recorded (2025) · (831) 883-3820
Dr. Ruth Trotter, MD
Seaside, CA · No drug or device payments recorded (2025) · (831) 899-8100
Dr. Talal Zahoor, MD
Seaside, CA · No drug or device payments recorded (2025) · (831) 889-1910
Dr. Daciana Iancu, MD
Sebastopol, CA · No drug or device payments recorded (2025) · (707) 295-3755
Dr. Misty Zelk, M.D.
Sebastopol, CA · No drug or device payments recorded (2025) · (707) 823-7616
Dr. Arielle Houston, MD
Selma, CA · $23 in drug and device payments (2025) · (800) 492-4227
Dr. Bimalroy Shah, MD
Selma, CA · $31 in drug and device payments (2025) · Telehealth · (559) 898-6165
Dr. Etsehiwot Taye, MD
Selma, CA · No drug or device payments recorded (2025) · (559) 898-6165
Dr. Intisab Sultan, M.D.
Selma, CA · $146 in drug and device payments (2025) · (559) 891-0100
Dr. Kil Kim, MD
Selma, CA · No drug or device payments recorded (2025) · (559) 896-2342
Dr. Nelson Rodriguez, MD
Selma, CA · No drug or device payments recorded (2025) · (559) 898-6165
Dr. Paul Williams, MD
Selma, CA · No drug or device payments recorded (2025) · (559) 898-6165
Dr. Rajani Vanam, M.D.
Selma, CA · $1,297 in drug and device payments (2025) · Telehealth · (559) 856-6090
Dr. Richard Piel, MD
Selma, CA · No drug or device payments recorded (2025) · (559) 898-6165
Dr. Sang-min Chang
Selma, CA · $26 in drug and device payments (2025) · (559) 856-6092
Dr. Sowjanya Kalidindi
Selma, CA · No drug or device payments recorded (2025) · (559) 537-0060
Dr. Lu Pu, MD
S El Monte, CA · $100 in drug and device payments (2025) · (626) 636-8700
Dr. Arthur Gomez, M.D.
Sepulveda, CA · No drug or device payments recorded (2025) · (818) 891-7711
Dr. Bevanne Bean-mayberry, MD
Sepulveda, CA · No drug or device payments recorded (2025) · (818) 895-9449
Dr. Giulia Michelini, M.D.
Sepulveda, CA · No drug or device payments recorded (2025) · (818) 891-7711
Dr. Sami Zakzook, M.D.
Sepulveda, CA · No drug or device payments recorded (2025) · (818) 891-7711
Dr. Charles Engelberg, M.D
S.f., CA · No drug or device payments recorded (2025) · (415) 234-8460
Dr. Peter Benedith, MD
Sf, CA · No drug or device payments recorded (2025) · (510) 424-1344
Dr. Kourosh Bagheri, M.D., M.S.
Shell Beach, CA · No drug or device payments recorded (2025) · (805) 781-9111
Dr. Ali Sheybani, M.D.
Sherman Oaks, CA · $941 in drug and device payments (2025) · Telehealth · (818) 905-9586
Dr. Amir Bahadori, M.D.
Sherman Oaks, CA · $16 in drug and device payments (2025) · Telehealth · (818) 995-8240
Dr. Bahman Omrani, DO
Sherman Oaks, CA · $226 in drug and device payments (2025) · (818) 988-4088
Dr. Berj Dermendjian, D.O
Sherman Oaks, CA · $755 in drug and device payments (2025) · Telehealth · (818) 905-5583
Dr. Dale Brent, MD
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 784-1195
Dr. Edmond Derderian, M.D.
Sherman Oaks, CA · $45 in drug and device payments (2025) · (818) 528-1044
Dr. Edward Marshall, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 501-0573
Dr. Edward Petko, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 990-1734
Dr. Erin Gordon Johnson
Sherman Oaks, CA · $108 in drug and device payments (2025) · Telehealth · (818) 325-0200
Dr. Gagandeep Rahi, M.D.
Sherman Oaks, CA · $118 in drug and device payments (2025) · (818) 325-0200
Dr. Herman Kagan, MD
Sherman Oaks, CA · $21 in drug and device payments (2025) · (818) 784-8401
Dr. Jeffrey Hay, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 817-0647
Dr. Keino Rutherford, MD
Sherman Oaks, CA · $20 in drug and device payments (2025)
Dr. Koruon Daldalyan, M.D.
Sherman Oaks, CA · $65 in drug and device payments (2025) · (818) 574-6189
Dr. Kristine Vardanyan, MD
Sherman Oaks, CA · $247 in drug and device payments (2025) · (818) 325-0200
Dr. Marina Levin, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 317-3398
Dr. Mark Farber, MD, PHD
Sherman Oaks, CA · $1,094 in drug and device payments (2025) · Telehealth · (818) 784-5300
Dr. Michael Kirsch, MD
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 986-8193
Dr. Mikhail Vizel, MD
Sherman Oaks, CA · No drug or device payments recorded (2025) · Telehealth · (818) 716-2100
Dr. Mordechai Levin, MD
Sherman Oaks, CA · $193 in drug and device payments (2025) · (818) 572-1490
Dr. Oleg Liakhovetski, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 528-1260
Dr. Sean Aldridge, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 386-1273
Dr. Stacy Womack Batzdorf, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · Telehealth · (818) 905-8005
Dr. Stephen Engle, M.D.
Sherman Oaks, CA · No drug or device payments recorded (2025) · (818) 783-7498
Dr. Steven Drell, MD
Sherman Oaks, CA · $21 in drug and device payments (2025) · Telehealth · (818) 784-9905
Dr. Hani Sami, MD
Sierra Madre, CA · $656 in drug and device payments (2025) · Telehealth · (626) 355-3443

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

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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.