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. Barbara Julier, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(530) 748-8186 Dr. Bryan Anker, MDPomona, CA · No drug or device payments recorded (2025) ·
(909) 526-1756 Dr. Mohammed Tarr, MDPomona, CA · No drug or device payments recorded (2025) ·
(909) 624-1233 Dr. Craig Miller, MDPorter Ranch, CA · $19 in drug and device payments (2025) ·
(818) 486-4925 Dr. Ceferino Quizon, M.DPort Hueneme, CA · No drug or device payments recorded (2025) ·
(805) 271-1048 Dr. Hedieh Badkoobehi, M.D.Poway, CA · No drug or device payments recorded (2025) ·
(858) 675-3100 Dr. Michael Cutler, M.D.Poway, CA · No drug or device payments recorded (2025) ·
(760) 622-2773 Dr. James Voss, MDRancho Cordova, CA · No drug or device payments recorded (2025) ·
(916) 524-5531 Dr. Richard Fausel, DORancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 773-1613 Dr. William Angkadjaja, MDRedlands, CA · No drug or device payments recorded (2025) · Telehealth ·
(909) 793-2363 Dr. Katherine Young, MDRedwood City, CA · $111 in drug and device payments (2025) · Telehealth ·
(650) 299-2015 Dr. Charlotte Zane, M.D.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 785-2200 Dr. Edgar Russell, D.O.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 413-0964 Dr. Lawrence Sandberg, M.D.Riverside, CA · No drug or device payments recorded (2025) ·
(951) 715-3445 Dr. Roger Annabel, MDRiverside, CA · No drug or device payments recorded (2025) ·
(951) 351-1364 Dr. Scott Cutler, M.D.Rohnert Park, CA · No drug or device payments recorded (2025) ·
(707) 664-2921 Dr. Holly Wojcik, NURSE PRACTITIONERRoseville, CA · No drug or device payments recorded (2025) ·
(916) 781-9885 Dr. Saba Azizi-ghannad, D.O.Roseville, CA · No drug or device payments recorded (2025) · Telehealth ·
(518) 347-5293 Dr. Thomas Statti, M.D.Roseville, CA · No drug or device payments recorded (2025) ·
(916) 771-5454 Dr. Brandon Loughridge, MDSacramento, CA · No drug or device payments recorded (2025) · Telehealth ·
(916) 973-5000 Dr. Breanna Bui, NPSacramento, CA · No drug or device payments recorded (2025) · Telehealth ·
(916) 737-5555 Dr. Champak Venkitachalam, MD, MPHSacramento, CA · No drug or device payments recorded (2025) ·
(916) 733-3777 Dr. Daniel Clark, MDSacramento, CA · No drug or device payments recorded (2025) ·
(530) 648-0970 Dr. David Foos, DOSacramento, CA · No drug or device payments recorded (2025) · Telehealth ·
(916) 614-4652 Dr. David Hubbard, MDSacramento, CA · $69 in drug and device payments (2025) ·
(916) 341-0575 Dr. Dwight Bass, M.D.Sacramento, CA · No drug or device payments recorded (2025) ·
(916) 454-1423 Dr. James Dickens, M.D.Sacramento, CA · $40 in drug and device payments (2025) ·
(916) 457-7424 Dr. Julie Jacobs, MDSacramento, CA · No drug or device payments recorded (2025) ·
(800) 282-3284 Dr. Kiranbir Dhillon Thiara, M.D.Sacramento, CA · No drug or device payments recorded (2025) ·
(916) 688-2000 Dr. Madeline Nguyen, D.O.Sacramento, CA · $483 in drug and device payments (2025) ·
(530) 749-3242 Dr. Mark Murray, MDSacramento, CA · No drug or device payments recorded (2025) ·
(916) 441-3070 Dr. Michael Moua, M.D.Sacramento, CA · $138 in drug and device payments (2025) ·
(916) 428-3788 Dr. Muhammad Daud, M.D.Sacramento, CA · No drug or device payments recorded (2025) ·
(916) 973-5243 Dr. Rebecca Lewis, FNPSacramento, CA · $498 in drug and device payments (2025) ·
(916) 488-6200 Dr. Robert Ferrera, M.D.Sacramento, CA · No drug or device payments recorded (2025) ·
(916) 929-4646 Dr. Trinh Dao Nguyen, MDSacramento, CA · $23 in drug and device payments (2025) · Telehealth ·
(916) 973-5000 Dr. Abigail Soto, MDSan Bernardino, CA · No drug or device payments recorded (2025) ·
(909) 888-8152 Dr. Richelle Marracino, M.D.San Bernardino, CA · No drug or device payments recorded (2025) ·
(909) 537-7444 Dr. Adam Sacks, M.D.San Diego, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 657-8600 Dr. Catherine Gagnon, NPSan Diego, CA · No drug or device payments recorded (2025) · Telehealth ·
(858) 554-1212 Dr. Elly Hann, D.O.San Diego, CA · No drug or device payments recorded (2025) ·
(858) 860-5972 Dr. Gary Boone, M.D.San Diego, CA · $132 in drug and device payments (2025) ·
(858) 292-8885 Dr. George Delgado, M.DSan Diego, CA · No drug or device payments recorded (2025) · Telehealth ·
(619) 692-4401 Dr. Gregg Lichtenstein, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(619) 594-5281 Dr. Ildiko Gerbatsch-bornemisza, MDSan Diego, CA · No drug or device payments recorded (2025) ·
(619) 423-5616 Dr. Lagina Scott, M.D.San Diego, CA · $23 in drug and device payments (2025) · Telehealth ·
(619) 515-2300 Dr. Laura Rubio, D.O.San Diego, CA · No drug or device payments recorded (2025) ·
(858) 279-9676 Dr. Matthew Carter, DOSan Diego, CA · No drug or device payments recorded (2025) ·
(619) 532-6400 Dr. Mia Malvestuto, DOSan Diego, CA · No drug or device payments recorded (2025) ·
(858) 499-2600 Dr. Rahul Kolavala, M.D.San Diego, CA · $40 in drug and device payments (2025) ·
(858) 552-8585 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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