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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. Orville Kolterman, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 657-8000
Dr. Ottar Lunde, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 471-9250
Dr. Pamela Jong, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Pannell Carr, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 272-0022
Dr. Parham Khanbolooki, M.D.
San Diego, CA · $15 in drug and device payments (2025) · Telehealth · (858) 554-7272
Dr. Parker Kim, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 260-7220
Dr. Parthiv Sheth, MD
San Diego, CA · No drug or device payments recorded (2025) · (800) 926-8273
Dr. Parvaneh Najafi, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Patricia Hlavin, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Patricia Pepper, MD, MSC, FACP
San Diego, CA · No drug or device payments recorded (2025) · (619) 532-7504
Dr. Patricia Riggs, D.O.
San Diego, CA · $15 in drug and device payments (2025) · (800) 926-8273
Dr. Patricia Tran, DO
San Diego, CA · $467 in drug and device payments (2025) · (619) 260-7220
Dr. Patrick La Vallo, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Patrick Loehr
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Paula Eisenhart, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 245-2820
Dr. Paula Nenn, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 255-6155
Dr. Paul Braun, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Paulette Cazares, M.D., MPH
San Diego, CA · $206 in drug and device payments (2025) · (858) 375-6670
Dr. Paul Han, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 260-7022
Dr. Paul Hazelbaker, DO
San Diego, CA · $31 in drug and device payments (2025) · (619) 515-2430
Dr. Paul Jain, M.D.
San Diego, CA · $19 in drug and device payments (2025) · (619) 880-8844
Dr. Paul Simon, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 400-5000
Dr. Paul Speckart, MD, M.F.A.C.P.
San Diego, CA · $41 in drug and device payments (2025) · (619) 297-3737
Dr. Paul Wagner, M.D., F.A.C.P.
San Diego, CA · $52 in drug and device payments (2025) · Telehealth · (858) 560-8890
Dr. Pearl Yu, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 657-8000
Dr. Peter Hum, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Peter Roloff, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 545-4263
Dr. Philip Henderson
San Diego, CA · $234 in drug and device payments (2025) · (619) 543-6268
Dr. Phong Dao, D.O.
San Diego, CA · No drug or device payments recorded (2025) · (858) 831-1567
Dr. Pranay Bonagiri, DO
San Diego, CA · No drug or device payments recorded (2025) · (619) 260-7220
Dr. Priya Jagasia, M.D.
San Diego, CA · $233 in drug and device payments (2025) · Telehealth · (858) 554-1212
Dr. Priya Krishnan, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Priyesha Bijlani, MD
San Diego, CA · $555 in drug and device payments (2025) · (858) 657-7000
Dr. Quynh Giao Nguyen, DO
San Diego, CA · $252 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Quynh-giao Nguyen, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 400-5050
Dr. Quynh Hoang, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 294-8111
Dr. Rabia Khan, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Rachel Michels, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 323-4261
Dr. Rae Boganey, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Rahul Gomez
San Diego, CA · $40 in drug and device payments (2025) · (619) 260-7220
Dr. Rajiv Jairam, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 694-7126
Dr. Rakhi Khatri, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 499-2600
Dr. Ralph Johnson, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 290-5000
Dr. Ramachander Nanduri, M.D.,
San Diego, CA · $156 in drug and device payments (2025) · (619) 264-3107
Dr. Randall Blankers
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-2429
Dr. Randolph Barrows, MD, MS
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Rashmi Joshi, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Rauf Sadiqi, DO
San Diego, CA · $283 in drug and device payments (2025) · (858) 939-3400
Dr. Raymond Pigeon, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 297-3737
Dr. Rebecca Johnston, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268

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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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.