Geriatric Medicine Doctors (Internal Medicine) in California
Data updated monthly · Last refresh October 2026
534 Geriatric Medicine (Internal Medicine) providers practice in California, including 144 (27%) 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.
534providers
144telehealth
Los Angelestop city
Geriatric Medicine (Internal Medicine) by city in California
Choose a city to see providers there.
Geriatric Medicine (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. Carol Thrun, MDLos Angeles, CA · $60 in drug and device payments (2025) ·
(323) 918-2700 Dr. Casey Yamashita, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 442-5100 Dr. Catherine Lindsay, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-8272 Dr. Catherine Sarkisian, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 825-6301 Dr. Cathy Lee, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 268-4110 Dr. Chaivat Phuvadakorn, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(213) 253-5018 Dr. David Ganz, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 268-4110 Dr. David LeeLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-0644 Dr. Deborah Oles, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 478-3711 Dr. Dohwa Kim, M.D.Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(323) 442-5100 Dr. Dong Lee, M.D.Los Angeles, CA · $1,370 in drug and device payments (2025) ·
(213) 674-7758 Dr. Erwinn Martin Sistoza, M.D.Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(213) 989-6100 Dr. Francisco Quijas, MEDICAL DOCTORLos Angeles, CA · $119 in drug and device payments (2025) · Telehealth ·
(323) 307-0800 Dr. Gail Greendale, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 794-9718 Dr. Grace Chen, M.D.Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 825-8253 Dr. Gregory Wong, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 307-0800 Dr. Isabella Sledge, MD, MPHLos Angeles, CA · No drug or device payments recorded (2025) ·
(617) 877-5915 Dr. James Lin, M.D.Los Angeles, CA · $27 in drug and device payments (2025) ·
(310) 825-6301 Dr. James Templeman, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 783-7963 Dr. Jeffrey Mariano, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(323) 783-1490 Dr. John Hoh, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 644-3880 Dr. John Uyanne, MDLos Angeles, CA · $24 in drug and device payments (2025) ·
(562) 706-2612 Dr. Jonathan Wanagat, MD PHDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-2583 Dr. Jo Pullen, MDLos Angeles, CA · $511 in drug and device payments (2025) ·
(213) 207-5000 Dr. Joshua Chodosh, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-0631 Dr. Justin ChengLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 478-3711 Dr. Magda Lenartowicz, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-5421 Dr. Marcel Filart, MDLos Angeles, CA · $882 in drug and device payments (2025) ·
(323) 499-1350 Dr. Marie AdachiLos Angeles, CA · $42 in drug and device payments (2025) ·
(310) 206-8272 Dr. Maristela Garcia, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-8253 Dr. Mary Levin, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 478-3711 Dr. Matthew Mulroy, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-8272 Dr. Michael Karapetian, M.D.Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(323) 913-9300 Dr. Michelle Eslami, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 739-4026 Dr. Minori OhashiLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-8272 Dr. Mira Cantrell, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(424) 832-8268 Dr. Misa TanakaLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-8272 Dr. Nancy Tran, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-8272 Dr. Nhu Y DoanLos Angeles, CA · No drug or device payments recorded (2025) ·
(424) 442-4080 Dr. Nouneh Danielyan, M.D.Los Angeles, CA · $14 in drug and device payments (2025) · Telehealth ·
(323) 913-9300 Dr. Omar Amir, M.D., M.S.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-8272 Dr. Paloma Zeballos ZunigaLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 728-0411 Dr. Patra SorodLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-8272 Dr. Patricia Harris, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 206-8272 Dr. Paul Leitner, MDLos Angeles, CA · $235 in drug and device payments (2025) · Telehealth ·
(310) 410-1944 Dr. Peifeng Hu, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 825-8253 Dr. Pingting Nie, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(213) 800-8880 Dr. Rafael Salas Martinez, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 783-7338 Dr. Robert Wang, PHD MDLos Angeles, CA · $469 in drug and device payments (2025) ·
(323) 931-3100 Dr. Robert Waxler, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 634-3850 Common questions
How many Geriatric Medicine (Internal Medicine) providers are in California?There are 534 Geriatric Medicine (Internal Medicine) providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Geriatric Medicine (Internal Medicine) providers in California offer telehealth?Yes. 144 of the 534 Geriatric Medicine (Internal Medicine) providers in California (about 27%) report offering telehealth services in CMS data.
Which cities in California have the most Geriatric Medicine (Internal Medicine) providers?Los Angeles (77), San Francisco (58), San Diego (38) have the highest concentration of Geriatric Medicine (Internal Medicine) providers in California.
How many Geriatric Medicine (Internal Medicine) providers in California received drug or device company payments?129 of 534 Geriatric Medicine (Internal Medicine) providers in California (24%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
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 Geriatric Medicine Doctors (Internal Medicine) in California work in independent practices or large health systems?Among 266 Geriatric Medicine Doctors (Internal Medicine) in California enrolled in Medicare, 30% bill through a solo or small practice with fewer than 10 clinicians, 12% through a mid-size group of 10 to 99, and 58% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Geriatric Medicine Doctors (Internal Medicine) in California work at?According to CMS facility affiliation records, the California hospitals where the most Geriatric Medicine Doctors (Internal Medicine) hold privileges are Ronald Reagan UCLA Medical Center in Los Angeles; Santa Monica - UCLA Med Ctr & Orthopaedic Hospital in Santa Monica; UCSF Medical Center in San Francisco.
Related reading on HealthcareDiscovery.AI
Geriatric Medicine (Internal Medicine) in all 50 states Search all 534 in the directory Ask Zach for help choosing
Related
