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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. Janet Staples Edwards, MD
Montebello, CA · No drug or device payments recorded (2025) · (323) 728-0321
Dr. John Hernandez, MD
Montebello, CA · $572 in drug and device payments (2025) · (323) 726-1109
Dr. Jonathan Chien, M.D.
Montebello, CA · $16 in drug and device payments (2025) · Telehealth · (323) 720-1144
Dr. Justine Young, D.O., MPH
Montebello, CA · No drug or device payments recorded (2025) · (323) 726-1222
Dr. Kwei Quartey, M.D.
Montebello, CA · No drug or device payments recorded (2025) · (323) 720-1144
Dr. Liliane Idylle, D.O.
Montebello, CA · No drug or device payments recorded (2025) · (562) 333-8288
Dr. Mohammad Chaudhry, M.D
Montebello, CA · $38 in drug and device payments (2025) · (323) 722-2260
Dr. Mohinderjit Neelam, M.D.
Montebello, CA · No drug or device payments recorded (2025) · Telehealth · (323) 278-7560
Dr. Mosen Defrawy, MD
Montebello, CA · $383 in drug and device payments (2025) · (323) 920-0505
Dr. Muzzamil Parekh, M.D.
Montebello, CA · $139 in drug and device payments (2025) · (323) 201-4130
Dr. Olga Alarid, M.D.
Montebello, CA · No drug or device payments recorded (2025) · Telehealth · (323) 278-7561
Dr. Rahul Dhawan, D.O.
Montebello, CA · $15 in drug and device payments (2025) · (213) 359-6393
Dr. Robert Drummond, MD, PHD
Montebello, CA · $3,000 in drug and device payments (2025) · (323) 720-5574
Dr. Roberto Luarca, M.D.
Montebello, CA · No drug or device payments recorded (2025) · (562) 949-7979
Dr. Rong Pu, NP
Montebello, CA · No drug or device payments recorded (2025) · (323) 726-0533
Dr. Sairwaa Prevost, M.D.
Montebello, CA · No drug or device payments recorded (2025) · (323) 869-0000
Dr. Shahe Pashayan, MD
Montebello, CA · No drug or device payments recorded (2025) · (323) 726-3868
Dr. Soroosh Armandi, D.O.
Montebello, CA · No drug or device payments recorded (2025) · (323) 726-0533
Dr. Soumitra Sarkar, M.D.
Montebello, CA · No drug or device payments recorded (2025) · (323) 728-0653
Dr. Alan Viglione, M.D.
Montecito, CA · $67 in drug and device payments (2025) · (805) 892-6500
Dr. Babji Mesipam, MD
Montecito, CA · $151 in drug and device payments (2025) · (805) 969-2166
Dr. Pamela Yao, DO
Montecito, CA · $71 in drug and device payments (2025) · Telehealth · (805) 565-0020
Dr. Susan Mayer-oakes, M.D.
Montecito, CA · No drug or device payments recorded (2025) · (805) 565-0020
Dr. Alan Sokolow, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 644-7409
Dr. Craig Geiler, M.D.
Monterey, CA · $40 in drug and device payments (2025) · (831) 242-0110
Dr. Daniel Waligora, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 373-1813
Dr. Edward Kennedy, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 373-3153
Dr. Eun-jung Park, MD
Monterey, CA · $89 in drug and device payments (2025) · (831) 647-3192
Dr. Georgina Heal, M.D.
Monterey, CA · $995 in drug and device payments (2025) · (831) 324-0593
Dr. Gregory Cannon, M.D.
Monterey, CA · $136 in drug and device payments (2025) · Telehealth · (831) 333-3040
Dr. Harry Nervino, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 333-3040
Dr. Holly Sliger, M.D.
Monterey, CA · No drug or device payments recorded (2025) · (831) 333-3040
Dr. Idean Pourshams, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 649-1000
Dr. Jeffrey Rice, MD
Monterey, CA · $16 in drug and device payments (2025) · (831) 373-3153
Dr. Jerrold Deshong, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 333-3040
Dr. John Francetic, M.D.
Monterey, CA · No drug or device payments recorded (2025) · (831) 624-5311
Dr. Kenneth Bernard, M.D.
Monterey, CA · No drug or device payments recorded (2025) · (831) 920-1505
Dr. Maheep Sangha
Monterey, CA · $639 in drug and device payments (2025) · Telehealth · (831) 375-3577
Dr. Matthew Awerbuck, M.D.
Monterey, CA · $29 in drug and device payments (2025) · (831) 622-2708
Dr. Michael Koontz, MD
Monterey, CA · $45 in drug and device payments (2025) · Telehealth · (831) 375-4105
Dr. Najwa Bahu Baugh, M.D.
Monterey, CA · $1,329 in drug and device payments (2025) · Telehealth · (831) 649-3375
Dr. Nancy Tray, MD
Monterey, CA · $98 in drug and device payments (2025) · Telehealth · (831) 375-4105
Dr. Nicolas Nuttall, M.D.
Monterey, CA · $15 in drug and device payments (2025) · (831) 646-1160
Dr. Nupur Aggarwal, MD
Monterey, CA · No drug or device payments recorded (2025) · Telehealth · (313) 333-3040
Dr. R Bryan Klassen, M.D.
Monterey, CA · No drug or device payments recorded (2025) · Telehealth · (831) 333-3040
Dr. Rebecca Abundis, D.O
Monterey, CA · $1,216 in drug and device payments (2025) · Telehealth · (831) 624-7070
Dr. Richard King, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 372-7374
Dr. Robert Keller, MD
Monterey, CA · No drug or device payments recorded (2025) · (831) 373-1100
Dr. Ronald Garren, M.D.
Monterey, CA · No drug or device payments recorded (2025) · (831) 642-4060
Dr. Sattar Hadi, MD
Monterey, CA · No drug or device payments recorded (2025) · Telehealth · (831) 333-3040

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.