Adult Medicine Doctors in California
Data updated monthly · Last refresh October 2026
385 Adult Medicine providers practice in California, including 72 (19%) 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.
385providers
72telehealth
Los Angelestop city
Adult Medicine by city in California
Choose a city to see providers there.
Adult 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. Susan Bodtke, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(619) 688-1600 Dr. Yasuko Kidokoro, M.D.San Diego, CA · $247 in drug and device payments (2025) ·
(858) 277-9669 Dr. Charles Burns, MDSan Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 529-4050 Dr. David Pepper, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 552-1013 Dr. Dru Herring, D.O.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 221-4810 Dr. Elizabeth Kantor, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 885-2274 Dr. Ho Tan, M.D.San Francisco, CA · $120 in drug and device payments (2025) ·
(415) 781-8881 Dr. Jan Bielan, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 587-6205 Dr. Jessica Dejarnette, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 746-1940 Dr. Jodi Baptiste, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(800) 221-5140 Dr. Joel Samuels, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 948-3296 Dr. John Dekutoski, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 750-2122 Dr. Juan Posada, M.D.San Francisco, CA · $39 in drug and device payments (2025) ·
(628) 223-5395 Dr. Lynne Lazarus, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(888) 803-3370 Dr. Mary Beasley, L.V.N.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 346-2914 Dr. Miguel Stroe, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 661-6151 Dr. Ricardo Alvarez, MDSan Francisco, CA · $68 in drug and device payments (2025) ·
(415) 552-1013 Dr. Richard Gibbs, MDSan Francisco, CA · $151 in drug and device payments (2025) ·
(415) 750-9894 Dr. Rong Shen, MDSan Francisco, CA · $532 in drug and device payments (2025) ·
(415) 596-3211 Dr. Shwesha Govil, DOSan Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 353-9339 Dr. Thanh Tran, MDSan Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 441-4882 Dr. William Kapla, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 865-3737 Dr. Zhiwei Lin, M.D.San Gabriel, CA · No drug or device payments recorded (2025) ·
(626) 288-2101 Dr. Hung Trinh, M.D.,San Jose, CA · No drug or device payments recorded (2025) ·
(408) 294-8663 Dr. Johnny PhuSan Jose, CA · No drug or device payments recorded (2025) · Telehealth ·
(408) 972-7000 Dr. Kindchia WongSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 574-4719 Dr. Lien-huong Nguyen, MDSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 972-6065 Dr. Pacifico Santos, M.D.San Jose, CA · $56 in drug and device payments (2025) ·
(408) 251-4240 Dr. William NhamSan Jose, CA · No drug or device payments recorded (2025) ·
(415) 391-9686 Dr. Karan Patel, M.D.San Leandro, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 454-4010 Dr. Khurram Barolia, M.D.San Leandro, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 454-2318 Dr. Somia Mohanty, MDSan Leandro, CA · No drug or device payments recorded (2025) ·
(510) 362-6303 Dr. Adam Blank, DOSan Luis Obispo, CA · $2,074 in drug and device payments (2025) ·
(800) 763-7732 Dr. Paul Gallagher, M.D.San Luis Obispo, CA · No drug or device payments recorded (2025) ·
(805) 549-7900 Dr. Soquel Schafer, PA-CSan Luis Obispo, CA · $2,208 in drug and device payments (2025) · Telehealth ·
(805) 591-4727 Dr. Araceli TapiaSan Marcos, CA · No drug or device payments recorded (2025) ·
(951) 290-2959 Dr. Lynette Easler-silva, NURSE PRACTITIONERSan Marcos, CA · No drug or device payments recorded (2025) ·
(951) 691-9406 Dr. Gurpreet Padam, M.D.San Mateo, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 360-9309 Dr. Issa Botros, MDSan Pedro, CA · No drug or device payments recorded (2025) ·
(310) 241-2590 Dr. William Williams, MDSan Quentin, CA · No drug or device payments recorded (2025) ·
(415) 454-1460 Dr. Jonathan Dietz, D.O.San Rafael, CA · No drug or device payments recorded (2025) ·
(415) 459-7416 Dr. Alan Barton, M.D.Santa Ana, CA · No drug or device payments recorded (2025) ·
(714) 731-0536 Dr. Don Smith, M.D.Santa Ana, CA · No drug or device payments recorded (2025) ·
(714) 547-5801 Dr. Felicia Young, D.O.Santa Ana, CA · No drug or device payments recorded (2025) ·
(714) 834-8396 Dr. J Cassidy, M.D.Santa Ana, CA · No drug or device payments recorded (2025) ·
(714) 662-0322 Dr. Karee Chrysovergis, FNPSanta Ana, CA · No drug or device payments recorded (2025) ·
(714) 556-7246 Dr. Lucio Loza, M.D.Santa Ana, CA · No drug or device payments recorded (2025) ·
(714) 830-6695 Dr. Marian Bareh, M.D.Santa Ana, CA · No drug or device payments recorded (2025) ·
(714) 967-4766 Dr. Ming Chen, D.O.Santa Ana, CA · $79 in drug and device payments (2025) ·
(888) 988-2800 Dr. Neal Schwartz, D.O.Santa Ana, CA · $41 in drug and device payments (2025) ·
(714) 352-2911 Common questions
How many Adult Medicine providers are in California?There are 385 Adult Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Adult Medicine providers in California offer telehealth?Yes. 72 of the 385 Adult Medicine providers in California (about 19%) report offering telehealth services in CMS data.
Which cities in California have the most Adult Medicine providers?Los Angeles (23), San Francisco (20), Sacramento (17) have the highest concentration of Adult Medicine providers in California.
How many Adult Medicine providers in California received drug or device company payments?116 of 385 Adult Medicine providers in California (30%) 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 Adult Medicine Doctors in California work in independent practices or large health systems?Among 180 Adult Medicine Doctors in California enrolled in Medicare, 36% bill through a solo or small practice with fewer than 10 clinicians, 9% through a mid-size group of 10 to 99, and 56% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Adult Medicine Doctors in California work at?According to CMS facility affiliation records, the California hospitals where the most Adult Medicine Doctors hold privileges are Hoag Memorial Hospital Presbyterian in Newport Beach; Northridge Hospital Medical Center in Northridge; Kaiser Foundation Hospital - Sacramento in Sacramento.
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