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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. Nick Lee, MD
Los Angeles, CA · $6,176 in drug and device payments (2025) · Telehealth · (213) 346-9982
Dr. Nicole Higashiyama
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4516
Dr. Nicole Tyer, MD
Los Angeles, CA · $865 in drug and device payments (2025) · Telehealth · (310) 385-3518
Dr. Nida Hamiduzzaman, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Nika Harutyunyan, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 267-9875
Dr. Nikhil Govil, D.O.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-1000
Dr. Nikolas Victoria, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-5610
Dr. Nilly Shechter, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 907-7200
Dr. Nima Golzy, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 267-9643
Dr. Nima Taha, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-7556
Dr. Nima Yavari, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 443-7971
Dr. Nimesh Rajakumar, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 286-0122
Dr. Nina Jreige
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-4073
Dr. Nina Narasimhalu, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4516
Dr. Nisha Viswanathan, M.D.
Los Angeles, CA · $19 in drug and device payments (2025) · Telehealth · (310) 206-6232
Dr. N. Kiefer, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 236-0311
Dr. Noah Bartfeld, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 857-2000
Dr. Nora Strick, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Norman Solomon, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 996-9355
Dr. Obidiugwu Duru, MD
Los Angeles, CA · $8,272 in drug and device payments (2025) · Telehealth · (310) 206-6232
Dr. Ohnma Win, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (909) 919-9296
Dr. Olivera Cuk
Los Angeles, CA · No drug or device payments recorded (2025) · (800) 954-8000
Dr. Olivia Jordan
Los Angeles, CA · $31 in drug and device payments (2025) · (310) 825-7921
Dr. Olivia Zachary, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-8272
Dr. Omar Aly
Los Angeles, CA · $254 in drug and device payments (2025) · (310) 794-1276
Dr. Orette Clarke, D.O.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 756-1317
Dr. Osbourne Blake, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 857-2000
Dr. Oscar Mendoza Ramos
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 728-0411
Dr. Ovid Mercene, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 413-9695
Dr. Paige Dobalian
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-6232
Dr. Palak Shah, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-0339
Dr. Pankaj Bahl, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 226-7593
Dr. Paola Sequeira, MD, MSPH
Los Angeles, CA · $587 in drug and device payments (2025) · (323) 226-3781
Dr. Pardis Saffari, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 260-5781
Dr. Parth Patel, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-6133
Dr. Parth Rajyaguru, MD MPH
Los Angeles, CA · $108 in drug and device payments (2025) · Telehealth · (323) 317-9200
Dr. Parth Shah, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-9111
Dr. Patrick Degregorio, MD, MBA
Los Angeles, CA · No drug or device payments recorded (2025) · (248) 798-4183
Dr. Patrick Mauer, M. D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 977-0511
Dr. Patrick Sarte, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Patrick Yao, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-8000
Dr. Paula Bailey-walton, M.D.
Los Angeles, CA · $761 in drug and device payments (2025) · Telehealth · (310) 657-9413
Dr. Paul Assaad, MD
Los Angeles, CA · $181 in drug and device payments (2025) · (323) 226-7556
Dr. Paul Chu, M.D.
Los Angeles, CA · $484 in drug and device payments (2025) · (213) 617-0777
Dr. Paul Gately, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 857-2000
Dr. Paul Gregerson, M.D.
Los Angeles, CA · $26 in drug and device payments (2025) · (213) 486-4929
Dr. Paul Guidry, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 299-1275
Dr. Paul Kim, M.D.
Los Angeles, CA · $75 in drug and device payments (2025) · (323) 343-3318
Dr. Paul Liu, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-6301
Dr. Paul Nguyenfa, MD
Los Angeles, CA · $297 in drug and device payments (2025) · (310) 825-9111

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.