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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. Richard Huey, MD
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 784-4000
Dr. Rishi Menon, MD
Roseville, CA · $20 in drug and device payments (2025) · (916) 782-3406
Dr. Rosario Corazon Florante, MD
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (510) 625-2856
Dr. Roxana Naderi, M.D.
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 755-7090
Dr. Ruchika Chhibar, M.D.
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 783-7109
Dr. Russell Vaughan, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Ryan Lin, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 791-0900
Dr. Ryan Pierce, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Sahira Ramirez Agramonte, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Sailakshmi Tatikunta, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Salil Chaturvedi, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 733-3777
Dr. Samreen Jamshed, M.D.
Roseville, CA · $393 in drug and device payments (2025) · (916) 781-1927
Dr. Sayed Hussain, MD
Roseville, CA · $186 in drug and device payments (2025) · Telehealth · (916) 782-5100
Dr. Schonze Del Pozo, M.D.
Roseville, CA · $161 in drug and device payments (2025) · (916) 781-1927
Dr. Seena Pattampurath, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4050
Dr. Seldon Greer, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Shadi Lanham, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 733-3777
Dr. Shailaja Vemulapalli, MD
Roseville, CA · $866 in drug and device payments (2025) · Telehealth · (916) 786-0222
Dr. Shainy Hegde, M.D.
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 781-1927
Dr. Shanu Kotak, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Shelly Garone, MD
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 784-4000
Dr. Spencer Christensen, DO
Roseville, CA · No drug or device payments recorded (2025) · (916) 781-1000
Dr. Steven Descoteaux, M.D.
Roseville, CA · $102 in drug and device payments (2025) · (916) 580-6600
Dr. Steven Dunlap, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Sumender Sharma, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 733-3777
Dr. Sundeep Desai, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 797-4715
Dr. Syed Ahmed, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 781-1927
Dr. Taja Manuselis, M.D.
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 817-5200
Dr. Tasfia Hoque, D.O.
Roseville, CA · $1,352 in drug and device payments (2025) · (916) 784-4000
Dr. Tayyiba Awan, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Thomas Hopkins, MD
Roseville, CA · $1,252 in drug and device payments (2025) · Telehealth · (916) 446-4449
Dr. Troy Singh, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 305-0974
Dr. Tun Thein, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Uma Srinivasan, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Vanessa Mandal, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 536-2500
Dr. Varsha Swamy
Roseville, CA · No drug or device payments recorded (2025) · (916) 781-1632
Dr. Wahid Syed, MD
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 781-1927
Dr. Waqaar Arshad, DO
Roseville, CA · No drug or device payments recorded (2025) · (925) 922-7170
Dr. Weixiong He, M.D.
Roseville, CA · No drug or device payments recorded (2025) · Telehealth · (916) 978-4000
Dr. Yahya Mohammadian, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 733-3777
Dr. Yiyu Feng, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-4000
Dr. Yunli Zheng, M.D
Roseville, CA · $499 in drug and device payments (2025) · Telehealth · (916) 783-7109
Dr. Zeeshan Khalid, MD
Roseville, CA · No drug or device payments recorded (2025) · (916) 781-1000
Dr. Taolin Jen, M.D.
Rossmoor, CA · No drug or device payments recorded (2025) · (904) 410-5517
Dr. Dejun Wang, M.D.
Rowland Heights, CA · $20 in drug and device payments (2025) · (626) 810-2983
Dr. Hsiu-ying Tseng, D.O.
Rowland Heights, CA · No drug or device payments recorded (2025) · (626) 965-1233
Dr. Jason Paek, M.D.
Rowland Heights, CA · $1,807 in drug and device payments (2025) · Telehealth · (626) 986-4899
Dr. Kuo Hsien Chang, MD
Rowland Heights, CA · No drug or device payments recorded (2025) · (626) 965-0696
Dr. Mary Wang, MD
Rowland Heights, CA · $1,865 in drug and device payments (2025) · (626) 964-1120
Dr. Rosel Liza Reyes, M.D.
Rowland Heights, CA · No drug or device payments recorded (2025) · Telehealth · (626) 964-4807

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.