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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. Arun Sitsabeshon
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Arvin Saluta, M.D.
San Diego, CA · $279 in drug and device payments (2025) · (858) 499-2600
Dr. Arya Lalithakumari
San Diego, CA · $128 in drug and device payments (2025) · (619) 515-2424
Dr. Ashkan Vafadaran, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 515-2430
Dr. Ashraf Suliman, M.D
San Diego, CA · $291 in drug and device payments (2025) · Telehealth · (619) 423-5616
Dr. Asim Guha Roy, MD
San Diego, CA · $790 in drug and device payments (2025) · Telehealth · (619) 417-1500
Dr. Asma Aouthmany, MD
San Diego, CA · No drug or device payments recorded (2025) · (215) 715-6269
Dr. Austin Gable, MD
San Diego, CA · $51 in drug and device payments (2025) · (619) 532-8983
Dr. Azadeh Shirazi, M.D.
San Diego, CA · $64 in drug and device payments (2025) · (858) 499-2777
Dr. Bahram Khadivi, M.D.
San Diego, CA · $152 in drug and device payments (2025) · (619) 543-6268
Dr. Banita Sehgal, D.O.
San Diego, CA · No drug or device payments recorded (2025) · (858) 499-2703
Dr. Bashar Oudah, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 939-3400
Dr. Basil Wendel, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 832-2478
Dr. Beatrice Golomb, MD, PHD
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Beau Duwe, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-5972
Dr. Benedict Dillon, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 429-3733
Dr. Benjamin Johnson, M.D.
San Diego, CA · $22 in drug and device payments (2025) · Telehealth · (619) 543-8254
Dr. Ben Mousavi, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (818) 625-7210
Dr. Bennett Gross, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 499-2600
Dr. Bennett Shiller, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 229-5050
Dr. Bernard Lichtenstein, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 550-8862
Dr. Bernard Michlin, M.D.
San Diego, CA · $3,911 in drug and device payments (2025) · Telehealth · (619) 583-1954
Dr. Bernice Ruo, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Betial Asmerom
San Diego, CA · $139 in drug and device payments (2025) · (619) 543-6268
Dr. Betre Workie, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-7312
Dr. Bharat Patel, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 556-4771
Dr. Bhargavbhai Patel, M.D.
San Diego, CA · $122 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Bhavesh Patel, D.O.
San Diego, CA · $25 in drug and device payments (2025) · (619) 528-7524
Dr. Bhupinder Khehar, M.D.
San Diego, CA · $26 in drug and device payments (2025) · Telehealth · (619) 291-9285
Dr. Bhuvana Ramanathan, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Billie Green, M.D.
San Diego, CA · $30 in drug and device payments (2025) · (858) 483-1720
Dr. Bindu Dindu
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Bindu Singhal, M.D.
San Diego, CA · $76 in drug and device payments (2025) · (858) 455-7657
Dr. Bishoy Ghobryal, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 260-7220
Dr. Blaine Lovetro, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Boyle Park, MD
San Diego, CA · No drug or device payments recorded (2025) · (800) 290-5000
Dr. Braj Pandey, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Brandon Mcclellan, MD
San Diego, CA · No drug or device payments recorded (2025) · (818) 606-8284
Dr. Brandon Pollak, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Brennan Ninesling, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 515-2300
Dr. Brett Petersen, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6737
Dr. Brian Barmettler, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 487-1800
Dr. Brian Barrozo, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Brian Coburn, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 662-4100
Dr. Brian First, M.D.
San Diego, CA · $2,575 in drug and device payments (2025) · Telehealth · (858) 292-0108
Dr. Brian Kwan, M.D.
San Diego, CA · $131 in drug and device payments (2025) · (858) 552-8585
Dr. Brian Lenzkes, M.D.
San Diego, CA · $38 in drug and device payments (2025) · (619) 297-3737
Dr. Brian Loui, MD
San Diego, CA · $67 in drug and device payments (2025) · (619) 515-2300
Dr. Brian Wood, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5435
Dr. Brij Gupta, M.D.
San Diego, CA · $693 in drug and device payments (2025) · Telehealth · (858) 720-0493

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.