Preventive Medicine/Occupational Environmental Medicine Doctors in California
Data updated monthly · Last refresh October 2026
131 Preventive Medicine/Occupational Environmental Medicine providers practice in California, including 3 (2%) offering telehealth. The largest concentration is in San Francisco. 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.
131providers
3telehealth
San Franciscotop city
Preventive Medicine/Occupational Environmental Medicine by city in California
Choose a city to see providers there.
Preventive Medicine/Occupational Environmental 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. Sheiphali Gandhi, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(628) 206-8494 Dr. Hannah Edwards, MDSan Jose, CA · $72 in drug and device payments (2025) ·
(408) 972-6800 Dr. Maria Gherman, MD MPHSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 404-7447 Dr. Rajiv Das, MDSan Jose, CA · $17 in drug and device payments (2025) ·
(408) 277-4177 Dr. Stephen Frangos, MDSan Ramon, CA · No drug or device payments recorded (2025) ·
(925) 842-2995 Dr. Gary Linnemann, M.D.Santa Ana, CA · No drug or device payments recorded (2025) ·
(714) 557-5599 Dr. Mark Musicant, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 898-3311 Dr. Steven Dosch, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 681-1761 Dr. William Trolan, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 985-2401 Dr. Frank Gonzales, MDSanta Maria, CA · No drug or device payments recorded (2025) ·
(805) 345-3030 Dr. Howard Miller, M.D, MPHSanta Maria, CA · No drug or device payments recorded (2025) ·
(805) 804-5463 Dr. Norman Westhoff, M.D.Santa Rosa, CA · No drug or device payments recorded (2025) ·
(707) 543-8360 Dr. Rebecca Ferrini, MDSantee, CA · No drug or device payments recorded (2025) ·
(619) 956-2852 Dr. Cary Young, M.D.South San Francisco, CA · No drug or device payments recorded (2025) ·
(650) 589-6500 Dr. Johnston Co, M.D.Stockton, CA · No drug or device payments recorded (2025) ·
(209) 954-3200 Dr. Allison EnomotoSunnyvale, CA · $125 in drug and device payments (2025) ·
(408) 675-2010 Dr. Gregg Kasting, MDThousand Oaks, CA · No drug or device payments recorded (2025) ·
(805) 447-1643 Dr. Debra Clydesdale, L.A.C.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 373-0191 Dr. Ramana Adapa, MDTracy, CA · No drug or device payments recorded (2025) ·
(209) 833-7555 Dr. Diana Accinelli, M.D.Truckee, CA · No drug or device payments recorded (2025) ·
(530) 550-7333 Dr. Maryam Sadeghi, MDUkiah, CA · No drug or device payments recorded (2025) ·
(707) 463-7488 Dr. Jeff TzengUniversal City, CA · $7,920 in drug and device payments (2025) ·
(818) 777-2400 Dr. Suzanne Nash, M.D.Vacaville, CA · No drug or device payments recorded (2025) ·
(707) 454-5800 Dr. Cyan Mcfarlane, MDValencia, CA · No drug or device payments recorded (2025) ·
(661) 253-5851 Dr. Mary Mcdaniel, D.O.Venice, CA · No drug or device payments recorded (2025) ·
(310) 392-6462 Dr. Thomas OvertonVisalia, CA · No drug or device payments recorded (2025) ·
(559) 624-8480 Dr. Frank Herrera, MDWalnut, CA · No drug or device payments recorded (2025) ·
(909) 224-4535 Dr. Michael Fischman, M.D.Walnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 283-2366 Dr. Wesley Chan, M.D.Walnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 932-7715 Dr. Clarence Ing, MDWeimar, CA · No drug or device payments recorded (2025) ·
(530) 637-4111 Dr. Thomas Mogensen, M.D.Yucaipa, CA · No drug or device payments recorded (2025) ·
(909) 790-1910 Common questions
How many Preventive Medicine/Occupational Environmental Medicine providers are in California?There are 131 Preventive Medicine/Occupational Environmental Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Preventive Medicine/Occupational Environmental Medicine providers in California offer telehealth?Yes. 3 of the 131 Preventive Medicine/Occupational Environmental Medicine providers in California (about 2%) report offering telehealth services in CMS data.
Which cities in California have the most Preventive Medicine/Occupational Environmental Medicine providers?San Francisco (19), San Diego (12), Los Angeles (5) have the highest concentration of Preventive Medicine/Occupational Environmental Medicine providers in California.
How many Preventive Medicine/Occupational Environmental Medicine providers in California received drug or device company payments?16 of 131 Preventive Medicine/Occupational Environmental Medicine providers in California (12%) 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.
Which hospitals do Preventive Medicine/Occupational Environmental Medicine Doctors in California work at?According to CMS facility affiliation records, the California hospitals where the most Preventive Medicine/Occupational Environmental Medicine Doctors hold privileges are UCSF Medical Center in San Francisco.
Related reading on HealthcareDiscovery.AI
Preventive Medicine/Occupational Environmental Medicine in all 50 states Search all 131 in the directory Ask Zach for help choosing
Related
