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. Louise Walter, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 221-4810 Dr. Lydia Lukian, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 759-2300 Dr. Maria Rivero, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(925) 451-1454 Dr. Mary Anne Johnson, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 221-4810 Dr. Michael Steinman, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 221-4810 Dr. Miranda Dunlop, M.D.San Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 353-4624 Dr. Monica ChengSan Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 502-5157 Dr. Namita Kansal, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 759-3007 Dr. Natalie Tjota, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 221-4810 Dr. Neha Marfatia, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 321-0600 Dr. Pei Chen, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-4900 Dr. Rebecca Conant, M.D.San Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 514-3577 Dr. Rebecca Sudore, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 221-4810 Dr. Russell Lemesh, MD,MS,FACPSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 447-1010 Dr. Sandra Moody Levin, MD, BSNSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 221-4810 Dr. Stephanie Cordonnier, MDSan Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 353-4900 Dr. Stephanie Rogers, M.D.San Francisco, CA · $53 in drug and device payments (2025) ·
(415) 502-4929 Dr. Suravi Thomas, MPH, MDSan Francisco, CA · $120 in drug and device payments (2025) ·
(415) 609-4630 Dr. Susan Schneider, M.D.,MSPHSan Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 476-0605 Dr. Sze Yan Janelle Ho, MD, MHSSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 292-8308 Dr. Teresa Pham, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 292-8888 Dr. Thiago Junqueira Avelino Da Silva, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-0605 Dr. Todd James, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1000 Dr. Victoria Sweet, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 759-2300 Dr. Victor Kwok, MDSan Francisco, CA · $192 in drug and device payments (2025) ·
(415) 759-3777 Dr. William DeardorffSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 406-1417 Dr. Oscar Chien, M.D.San Gabriel, CA · $13,874 in drug and device payments (2025) ·
(626) 569-2888 Dr. Neelam Gupta, M.D.San Jacinto, CA · $308 in drug and device payments (2025) · Telehealth ·
(951) 654-9367 Dr. Chien-wai Chiu, MDSan Jose, CA · $15 in drug and device payments (2025) ·
(408) 573-9686 Dr. Dushyant Patel, MDSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 923-1711 Dr. Gary Steinke, MDSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 885-4625 Dr. Haresh Ruparel, M.D.San Jose, CA · No drug or device payments recorded (2025) ·
(408) 295-2108 Dr. Nirmala Gopalan, MDSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 885-4622 Dr. Pamela Ann Sebastian, MBBSSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 885-5000 Dr. Thomas Kelsey, MDSan Jose, CA · $607 in drug and device payments (2025) ·
(408) 885-4612 Dr. Arlen Hoh, MD, MPHSan Leandro, CA · No drug or device payments recorded (2025) ·
(510) 895-4288 Dr. Steven Rosenthal, M.D.San Leandro, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 351-4213 Dr. Thanh Nguyen-dinh, M.D.San Leandro, CA · $23 in drug and device payments (2025) · Telehealth ·
(408) 681-8999 Dr. Christine Barber, M.D.San Luis Obispo, CA · No drug or device payments recorded (2025) ·
(805) 547-7911 Dr. Paul Liu, M.D.San Marino, CA · $61 in drug and device payments (2025) · Telehealth ·
(626) 796-0821 Dr. Daphne Lo, MDSan Mateo, CA · No drug or device payments recorded (2025) ·
(650) 425-9408 Dr. Diana Jao, MDSan Mateo, CA · No drug or device payments recorded (2025) ·
(650) 573-2426 Dr. Monique Yohanan, M.D.San Mateo, CA · No drug or device payments recorded (2025) ·
(650) 520-2406 Dr. Shelley Salpeter, MDSan Mateo, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 532-2321 Dr. Jessica Neil, MDSan Rafael, CA · No drug or device payments recorded (2025) ·
(415) 444-4206 Dr. Terry Hill, M.D.San Ramon, CA · No drug or device payments recorded (2025) ·
(925) 327-6744 Dr. Anne White, D.O.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 681-1761 Dr. Camille Olsen, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) · Telehealth ·
(805) 563-3234 Dr. Jayson Wright, MDSanta Barbara, CA · $69 in drug and device payments (2025) · Telehealth ·
(805) 682-7111 Dr. Leonard Grabowski, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 969-3690 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.
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