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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. George Maloof, MD
El Centro, CA · $22 in drug and device payments (2025) · Telehealth · (760) 352-3555
Dr. Idrees Suliman, MD
El Centro, CA · $910 in drug and device payments (2025) · (858) 666-7034
Dr. Kyle Grant
El Centro, CA · $20 in drug and device payments (2025) · (602) 481-6212
Dr. Lucian Oprea, MD.
El Centro, CA · No drug or device payments recorded (2025) · (760) 482-0864
Dr. Prabhdeep Singh, M.D.
El Centro, CA · No drug or device payments recorded (2025) · (760) 352-5800
Dr. Rajeev Gupta, MD
El Centro, CA · No drug or device payments recorded (2025) · (760) 352-1731
Dr. Roberto Navarro, M.D.,
El Centro, CA · No drug or device payments recorded (2025) · (760) 482-5075
Dr. Sivaraman Gounder, MD
El Centro, CA · $102 in drug and device payments (2025) · (760) 353-5933
Dr. Tien Vo, MD
El Centro, CA · $1,049 in drug and device payments (2025) · (760) 352-2551
Dr. Unnati Sampat, M.D.
El Centro, CA · $1,171 in drug and device payments (2025) · Telehealth · (760) 592-4783
Dr. Victor Lin, DO
El Centro, CA · $17 in drug and device payments (2025) · (760) 339-7100
Dr. Charles Barnes, M.D.
El Cerrito, CA · No drug or device payments recorded (2025) · (510) 237-2823
Dr. Evan Krasner, M.D.
El Cerrito, CA · No drug or device payments recorded (2025) · (510) 221-7756
Dr. Charles Moore, MD
El Dorado, CA · No drug or device payments recorded (2025) · (916) 296-3529
Dr. Anand Mehta, MD
El Dorado Hills, CA · No drug or device payments recorded (2025) · (916) 629-4443
Dr. Jasdeep Bal, M.D
El Dorado Hills, CA · No drug or device payments recorded (2025) · (916) 835-5396
Dr. Parween Moness, M.D.
El Dorado Hills, CA · $623 in drug and device payments (2025) · Telehealth · (916) 984-9004
Dr. Ralph Delgado, MD
El Dorado Hills, CA · No drug or device payments recorded (2025) · (916) 390-8394
Dr. Sussan Saboor, M.D
El Dorado Hills, CA · No drug or device payments recorded (2025) · (916) 220-6485
Dr. Brian Pecha, MD
Eldridge, CA · No drug or device payments recorded (2025) · (707) 938-6000
Dr. Chen Chen, D.O.
Elk Grove, CA · $18 in drug and device payments (2025) · Telehealth · (916) 691-5915
Dr. Choon-weng Chan, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 667-0600
Dr. Chou Wu, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 533-4173
Dr. David Do
Elk Grove, CA · $68 in drug and device payments (2025) · Telehealth · (916) 478-6565
Dr. David Lee, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 667-0600
Dr. Desmond Tan, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 478-5100
Dr. Eddy Joelson, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 691-9827
Dr. Edward Pagliere, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 684-5401
Dr. Eve Hood-medland, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 691-3000
Dr. Gaurav Datta, MD
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (414) 336-8677
Dr. Jeffrey Hagino, DO
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 683-3955
Dr. Jojo Joves, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 478-5000
Dr. Jon Oide, MD
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 478-5000
Dr. Joseph Xu, MD
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 478-6565
Dr. Jude Waterbury, MD
Elk Grove, CA · $320 in drug and device payments (2025) · Telehealth · (916) 691-6622
Dr. Kristina Ishihara, MD
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 478-5000
Dr. Lisa Marelich, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 478-5000
Dr. Lisa Wong, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 478-5000
Dr. Luu Nguyen, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 478-5000
Dr. Mahmoud Khattab, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 691-6666
Dr. Maninder Sanghera, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 478-6565
Dr. Marcus Dahlstrom, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · (541) 222-7300
Dr. Michael Kelly, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 478-5000
Dr. Mira Roganovic, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 667-0600
Dr. Muhammad Zubair, M.D.
Elk Grove, CA · $48 in drug and device payments (2025) · Telehealth · (916) 733-5801
Dr. Nina Khangura, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 691-8500
Dr. Pamela Apolaya-smith, MD
Elk Grove, CA · No drug or device payments recorded (2025) · Telehealth · (916) 544-6395
Dr. Paolo Troia-cancio, M.D.
Elk Grove, CA · $35,769 in drug and device payments (2025) · Telehealth · (916) 683-3955
Dr. Phillip Mangis, M.D.
Elk Grove, CA · No drug or device payments recorded (2025) · (443) 851-9218
Dr. Sara Bonilla-larsen, MD
Elk Grove, CA · No drug or device payments recorded (2025) · (916) 691-5900

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.