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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. Logan Rose, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 876-1636
Dr. Louis Elperin, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Madhavi Gutta, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Mara Gobovic, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · Telehealth · (818) 719-2000
Dr. Maria Amado, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 876-1624
Dr. Marion Ho, M.D.
Woodland Hills, CA · $344 in drug and device payments (2025) · (818) 615-2888
Dr. Mark Falkenbach, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Marwa Kilani, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 293-8199
Dr. Mauli Patel, M.D.
Woodland Hills, CA · $26 in drug and device payments (2025) · (818) 719-2000
Dr. Megha Aggarwal
Woodland Hills, CA · No drug or device payments recorded (2025) · (760) 237-0001
Dr. Michelle Shohmelian, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · Telehealth · (818) 719-2000
Dr. Mondona Goodwin, DO
Woodland Hills, CA · No drug or device payments recorded (2025) · Telehealth · (818) 719-2000
Dr. Nancy Wharfield, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Nastaran Younessi, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · Telehealth · (818) 719-2000
Dr. Nicholas Roueiheb, D.O, MPH
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-4896
Dr. Nyan Lin Aung
Woodland Hills, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Paz Eilat, M.D.
Woodland Hills, CA · $188 in drug and device payments (2025) · Telehealth · (310) 930-7639
Dr. Quynh Dinh, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Rachel Johns, DO
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Rajesh Sodhi, DO, MPH
Woodland Hills, CA · No drug or device payments recorded (2025) · (888) 515-3500
Dr. Richard Sohn, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 702-0100
Dr. Robert Jaffe, MD
Woodland Hills, CA · $15 in drug and device payments (2025) · (818) 713-1378
Dr. Roger Lind, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (661) 284-3100
Dr. Russell Kurihara, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 556-2700
Dr. Ruth White, M.D.
Woodland Hills, CA · $28 in drug and device payments (2025) · (818) 610-0292
Dr. Saeed Dini, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Saeed Humayun, M.D.
Woodland Hills, CA · $95 in drug and device payments (2025) · (818) 876-4055
Dr. Sameer Arora, MD
Woodland Hills, CA · $49 in drug and device payments (2025) · (818) 719-2000
Dr. Sarah Yahraus, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Sara Sadat, D.O.
Woodland Hills, CA · No drug or device payments recorded (2025) · (888) 515-3500
Dr. Sara Sajid, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · Telehealth · (818) 719-2000
Dr. Sean Hashmi, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2480
Dr. Seif Sleiman, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (626) 405-3697
Dr. Sergio Mendoza Sida, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Shailesh Bhat, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · Telehealth · (818) 719-2000
Dr. Shakeela Shah, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Shanthi Suresh, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Sharon Korr, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Sylva Murdaian, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 592-3000
Dr. Tatiana Mikhael
Woodland Hills, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Tedros Amanios, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Thomas Gruhlke, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (888) 515-3500
Dr. Ting Pan, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2429
Dr. Vahe Kassabian
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. Vishal Patel, M.D.
Woodland Hills, CA · $816 in drug and device payments (2025) · Telehealth · (818) 719-4442
Dr. William Penman, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000
Dr. William Tu, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (888) 515-3500
Dr. Yang Bai, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · Telehealth · (818) 719-2000
Dr. Yu-hsiang Lin, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 610-0292
Dr. Yu Liu, MD
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-2000

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.