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 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. Nilar Chwa, M.DArcadia, CA · $793 in drug and device payments (2025) ·
(626) 821-6411 Dr. Pai-hsiang Chen, D.OArcadia, CA · $1,749 in drug and device payments (2025) ·
(626) 446-2360 Dr. Peter Ma, M.D.Arcadia, CA · $431 in drug and device payments (2025) ·
(626) 294-9978 Dr. Peter Tan, M.D.Arcadia, CA · $442 in drug and device payments (2025) ·
(626) 317-5136 Dr. Phillip Cabasso, M.D.Arcadia, CA · No drug or device payments recorded (2025) ·
(626) 447-9397 Dr. Renato Labog, M.DArcadia, CA · No drug or device payments recorded (2025) ·
(626) 462-1892 Dr. Richard Davis, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 446-4727 Dr. Sabrina Yong, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 574-3442 Dr. Sam Chia, M.D.Arcadia, CA · $1,343 in drug and device payments (2025) ·
(626) 447-5800 Dr. Samuel Ho, MDArcadia, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 254-2196 Dr. Scott Liang, MDArcadia, CA · $1,252 in drug and device payments (2025) ·
(626) 628-0808 Dr. Seetha Lath, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 821-4808 Dr. Seint Yee, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 445-1690 Dr. Sherry Xie, M.D.Arcadia, CA · $557 in drug and device payments (2025) ·
(626) 254-1281 Dr. Sodabeh Rahimy, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 254-2293 Dr. Sowmya SrinivasArcadia, CA · No drug or device payments recorded (2025) ·
(626) 898-8000 Dr. Stephen Chun, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 252-4565 Dr. Stephen Velloze, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 254-2293 Dr. Thomas Miles, M.D.Arcadia, CA · No drug or device payments recorded (2025) ·
(626) 445-1595 Dr. Trang Eng, M.D.Arcadia, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 462-1891 Dr. Vincent Antosz, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 795-2244 Dr. Wen-che Chung, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 710-8766 Dr. Wencheng Jen, M.D.Arcadia, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 416-3051 Dr. Yehuda Berenson, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 795-2244 Dr. Zewdu Gebreyes, M.D.Arcadia, CA · No drug or device payments recorded (2025) ·
(626) 462-1891 Dr. Lawrence Senffner, M.D.Arcata, CA · No drug or device payments recorded (2025) ·
(707) 822-2432 Dr. Bala Bhat, MDArroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 481-3652 Dr. Erick Hjortsvang, MDArroyo Grande, CA · $692 in drug and device payments (2025) · Telehealth ·
(805) 474-9143 Dr. Gary Foresman, MDArroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 481-3442 Dr. Gautam Bhakta, MDArroyo Grande, CA · No drug or device payments recorded (2025) · Telehealth ·
(805) 474-6110 Dr. Michael Zigelman, MDArroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 489-9040 Dr. Nancy O'malley, M.D.Arroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 473-6201 Dr. Pankaj Karan, MD INTERNAL MEDICINEArroyo Grande, CA · $105 in drug and device payments (2025) ·
(805) 361-8030 Dr. Reshma Mahmood, MDArroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 473-6201 Dr. Manmohan Chawla, M.D.Artesia, CA · No drug or device payments recorded (2025) ·
(562) 809-2606 Dr. Carlos Rodriguez, M.D.Arvin, CA · No drug or device payments recorded (2025) · Telehealth ·
(661) 854-3131 Dr. Abiodun Obadina, M.D.,Atascadero, CA · No drug or device payments recorded (2025) ·
(805) 468-2000 Dr. Adrian TorbelaAtascadero, CA · $55 in drug and device payments (2025) ·
(805) 468-2000 Dr. Albert Abdel-malek, MDAtascadero, CA · No drug or device payments recorded (2025) ·
(805) 468-2000 Dr. Ben Cooke, MDAtascadero, CA · $1,003 in drug and device payments (2025) ·
(805) 792-1400 Dr. Emily Luk, M.D.Atascadero, CA · No drug or device payments recorded (2025) ·
(805) 468-2000 Dr. Hossein Akhavan, M.D.Atascadero, CA · No drug or device payments recorded (2025) ·
(805) 468-3801 Dr. Jane Mcclenahan, M.D.Atascadero, CA · No drug or device payments recorded (2025) ·
(805) 468-2188 Dr. Jason Green, M.D.Atascadero, CA · $71 in drug and device payments (2025) ·
(805) 468-2000 Dr. Lisa Vasak, M.D.Atascadero, CA · No drug or device payments recorded (2025) ·
(805) 466-0676 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.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
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.
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