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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. Austin Apramian, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 307-8500
Dr. Avetis Hekimian, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4516
Dr. Aviva Bernat, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 728-6193
Dr. Aviva Iofel, MD
Los Angeles, CA · $112 in drug and device payments (2025) · Telehealth · (323) 465-1111
Dr. Aye-aye Win
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 846-4216
Dr. Azadeh Lankarani-fard, M.D.
Los Angeles, CA · $70 in drug and device payments (2025) · (310) 268-4372
Dr. Azra Bhimani, M.D.
Los Angeles, CA · $117 in drug and device payments (2025) · (310) 825-9111
Dr. Babak Moein Vaziri, M.D.
Los Angeles, CA · $19 in drug and device payments (2025) · (213) 384-3434
Dr. Babak Pezeshki, MD, MPH
Los Angeles, CA · $185 in drug and device payments (2025) · Telehealth · (213) 413-2700
Dr. Babak Rostami, M.D. INTERNAL MEDICI
Los Angeles, CA · $50 in drug and device payments (2025) · (323) 957-8787
Dr. Babak Saedi, M.D.
Los Angeles, CA · $20 in drug and device payments (2025) · Telehealth · (323) 226-7556
Dr. Bahman Lalezari, MD
Los Angeles, CA · $48 in drug and device payments (2025) · (323) 939-5346
Dr. Bakheng Pheng, M.D.
Los Angeles, CA · $67 in drug and device payments (2025) · (323) 783-4892
Dr. Bansari Patel, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 293-7171
Dr. Baohua Wang, M.D.
Los Angeles, CA · $125 in drug and device payments (2025) · (213) 413-0001
Dr. Barbara Hollander, RD, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 423-8056
Dr. Barnett Grier, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 828-7929
Dr. Barry Gwartz, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 655-4701
Dr. Barry Neidorf, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 277-2771
Dr. Barry Unger, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 274-7631
Dr. Basit Chaudhry, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-8272
Dr. Beatriz Tamayo, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 250-0050
Dr. Beda Cha
Los Angeles, CA · $471 in drug and device payments (2025) · (310) 206-6232
Dr. Behram Vaghaiwalla, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 268-3169
Dr. Belinda Waltman, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-5040
Dr. Benjamin Ansell, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 794-4881
Dr. Benjamin Lee
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9643
Dr. Benjamin Pezeshki, M.D.
Los Angeles, CA · $126 in drug and device payments (2025) · (213) 205-1890
Dr. Benjamin Rostami, MD
Los Angeles, CA · $45 in drug and device payments (2025) · (310) 963-3035
Dr. Benjamin Waterman
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7375
Dr. Ben Ysmael Purugganan
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9643
Dr. Berj Demirjian, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 478-3711
Dr. Bertran Hsieh, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (213) 623-2225
Dr. Beverly Rowe, PHYSICIAN ASSISTANT
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 934-7879
Dr. Bharat Chaudry, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Bhasker Venkateswaralu, M.D
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 861-5985
Dr. Bibinaz Eghtedari, MD, MPH
Los Angeles, CA · $1,732 in drug and device payments (2025) · (424) 522-7100
Dr. Bich-thuy Tran, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 546-4599
Dr. Bill Kaloostian, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 663-7986
Dr. Blake Meyer, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 423-2811
Dr. Blanca Fajardo, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (818) 838-4587
Dr. Bonnie Moura, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (818) 952-3075
Dr. Bonnie Singh, M.D.
Los Angeles, CA · $4,422 in drug and device payments (2025) · (310) 226-7556
Dr. Bradley Friedman, M.D.
Los Angeles, CA · $92 in drug and device payments (2025) · (310) 268-2288
Dr. Bradley Manubay, D.O.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 268-5000
Dr. Brandon Huynh, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 987-1362
Dr. Brandon Itagaki, M.D.
Los Angeles, CA · $420 in drug and device payments (2025) · (310) 825-8307
Dr. Brandon Miller, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Brandon Smith
Los Angeles, CA · $83 in drug and device payments (2025) · (310) 206-6232
Dr. Brian Collins, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556

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.