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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. Quynh Dang, M.D.
Bakersfield, CA · $137 in drug and device payments (2025) · (661) 869-6227
Dr. Rajarathinam Subramaniam, M.D
Bakersfield, CA · No drug or device payments recorded (2025) · (732) 354-6272
Dr. Rajendra Patel, M.D.
Bakersfield, CA · $1,463 in drug and device payments (2025) · Telehealth · (661) 638-2273
Dr. Raju Patel, M.D
Bakersfield, CA · $677 in drug and device payments (2025) · (661) 635-3000
Dr. Ramanjeet Sidhu, M.D.
Bakersfield, CA · $294 in drug and device payments (2025) · (661) 326-2000
Dr. Ravi Solanki, D.O.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 428-5283
Dr. Reetika Sachdeva, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 869-6227
Dr. Reetinder Sandhu, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 632-1801
Dr. Regina Ng, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (877) 524-7373
Dr. Ronald Reynoso Hernandez, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (541) 663-3141
Dr. Rosemarie Dellica, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 633-2009
Dr. Rosie Boparai, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 632-1808
Dr. Rowena Ventayen, M.D.
Bakersfield, CA · $19 in drug and device payments (2025) · (661) 616-9300
Dr. Royce Johnson, MD
Bakersfield, CA · $641 in drug and device payments (2025) · Telehealth · (661) 872-7000
Dr. Rushabh Shah, M.D.
Bakersfield, CA · $386 in drug and device payments (2025) · (661) 316-6000
Dr. Rusong Huang, MD
Bakersfield, CA · $204 in drug and device payments (2025) · (661) 327-4411
Dr. Russell Enoch, D.O.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 328-9831
Dr. Sabitha Eppanapally, M.D
Bakersfield, CA · $182 in drug and device payments (2025) · Telehealth · (916) 425-3603
Dr. Sabitha Pabbathi, M.D
Bakersfield, CA · $831 in drug and device payments (2025) · (661) 328-4260
Dr. Samanjit Kandola, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (517) 940-0349
Dr. Saman Ratnayake, MD
Bakersfield, CA · $179 in drug and device payments (2025) · Telehealth · (661) 323-3280
Dr. Samantha Ratnayake, MD
Bakersfield, CA · $268 in drug and device payments (2025) · Telehealth · (661) 326-2202
Dr. Samir Salameh, M.D.
Bakersfield, CA · $230 in drug and device payments (2025) · Telehealth · (661) 326-2000
Dr. Santosh Sinha, M.D.
Bakersfield, CA · $26 in drug and device payments (2025) · (661) 654-0200
Dr. Sarah Dowda, NP
Bakersfield, CA · $1,596 in drug and device payments (2025) · Telehealth · (661) 829-7677
Dr. Sasank Isola
Bakersfield, CA · $964 in drug and device payments (2025) · (800) 991-5272
Dr. Sean Fink
Bakersfield, CA · $123 in drug and device payments (2025) · (661) 321-0234
Dr. Si Chen, M.D.
Bakersfield, CA · $182 in drug and device payments (2025) · (661) 326-2000
Dr. Stanley Teeten, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (800) 353-5400
Dr. Stephan Sway, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 326-2000
Dr. Stephen Strategos, M.D.
Bakersfield, CA · $398 in drug and device payments (2025) · Telehealth · (661) 654-0400
Dr. Suhaib Zanial, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 327-3747
Dr. Sujata Desai, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (800) 353-5400
Dr. Sukhdeep Sandhu, M.D.
Bakersfield, CA · $114 in drug and device payments (2025) · (661) 327-5350
Dr. Sunil Ramnani, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (800) 353-5400
Dr. Talal Barlas, MD
Bakersfield, CA · $117 in drug and device payments (2025) · (866) 707-6664
Dr. Tammy Issa, MD
Bakersfield, CA · $167 in drug and device payments (2025) · (661) 326-2200
Dr. Tatum Jestila, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (623) 606-8138
Dr. Tetyana Vaysman, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 326-2000
Dr. Thien Van, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 632-1800
Dr. Thin Han, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 328-9831
Dr. Tho Pham, M.D.
Bakersfield, CA · $29 in drug and device payments (2025) · (661) 336-0920
Dr. Uma Rao, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 847-4772
Dr. Umesh Patel, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 588-0687
Dr. Vahid Berdjis, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 588-9699
Dr. Vema Bolla, MD
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 324-1455
Dr. Venkat Merla, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · Telehealth · (661) 328-4260
Dr. Vincent Guerena, M.D.
Bakersfield, CA · No drug or device payments recorded (2025) · (661) 327-4411
Dr. Vivek Radhakrishnan, MD
Bakersfield, CA · $449 in drug and device payments (2025) · Telehealth · (661) 412-9391
Dr. Warren Wisnoff, DO
Bakersfield, CA · $143 in drug and device payments (2025) · Telehealth · (661) 843-7830

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.