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.
Where Preventive Medicine/Occupational Environmental Medicine Doctors in California practice
From CMS Medicare enrollment records covering 15 of the 131 providers listed here (11%). Providers who do not bill Medicare are not included in these figures.
Largest practice groups
| Group (as registered with Medicare) | Preventive Medicine/Occupational Environmental Medicine Doctors | All clinicians in group | Main city |
| Regents of the University of California | 3 | 706 | San Francisco |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Preventive Medicine/Occupational Environmental Medicine Doctors affiliated |
| UCSF Medical Center | San Francisco | Nonprofit | 4 of 5 | 3 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
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. Joseph Chen, MDAlameda, CA · No drug or device payments recorded (2025) ·
(510) 437-3598 Dr. Howard Hu, M.D., M.P.H., SC.D.Altadena, CA · No drug or device payments recorded (2025) ·
(206) 886-6068 Dr. Franz Gliederer, MD, MPHBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 215-7500 Dr. Diane Liu, M.D., M.P.H.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 642-6891 Dr. Robert WagnerBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 845-5170 Dr. Francis HallCamp Pendleton, CA · No drug or device payments recorded (2025) ·
(760) 725-8882 Dr. Jaime Vega, D.O., M.P.H.Camp Pendleton, CA · No drug or device payments recorded (2025) ·
(760) 716-4017 Dr. James Owens, D.O.Camp Pendleton, CA · No drug or device payments recorded (2025) ·
(760) 725-1400 Dr. Lori Perry, M.D., M.P.H.Camp Pendleton, CA · No drug or device payments recorded (2025) ·
(760) 725-7137 Dr. Janet Whitney, DO, MPHChico, CA · No drug or device payments recorded (2025) ·
(858) 525-1665 Dr. Eric Glass, MDChula Vista, CA · No drug or device payments recorded (2025) ·
(619) 821-2300 Dr. Sheri Belafsky, M.D.Davis, CA · No drug or device payments recorded (2025) ·
(530) 750-5830 Dr. Stephen Mccurdy, MDDavis, CA · No drug or device payments recorded (2025) ·
(530) 752-8051 Dr. Hannah Kim, MD, MPHDowney, CA · No drug or device payments recorded (2025) ·
(562) 657-2200 Dr. James Medeiros, D.O.Edwards Afb, CA · No drug or device payments recorded (2025) ·
(661) 275-2750 Dr. Eduardo Aenlle, MDFallbrook, CA · No drug or device payments recorded (2025) ·
(760) 525-8330 Dr. Enrico Melson, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 428-0170 Dr. Melanie Odeleye, MDFoster City, CA · No drug or device payments recorded (2025) ·
(650) 409-1234 Dr. Rhea Wong, M.D.Fresno, CA · No drug or device payments recorded (2025) ·
(559) 459-6414 Dr. Wendy HoGardena, CA · No drug or device payments recorded (2025) ·
(310) 527-5600 Dr. Brian Kutsunai, M.D.Glendale, CA · No drug or device payments recorded (2025) ·
(818) 502-2050 Dr. Janet Iles, M.D.Goleta, CA · No drug or device payments recorded (2025) ·
(760) 519-4328 Dr. Sanjiwani Meharda, MDGrand Terrace, CA · $185 in drug and device payments (2025) ·
(909) 864-1097 Dr. Jonathan Hake, M.D.Granite Bay, CA · No drug or device payments recorded (2025) ·
(916) 390-2661 Dr. Rugmini Shah, M.DGranite Bay, CA · $20 in drug and device payments (2025) ·
(916) 797-1751 Dr. Jack Deitchman, MDGrass Valley, CA · No drug or device payments recorded (2025) ·
(530) 274-8483 Dr. Shelley Arredondo, M.D., MPHHarbor City, CA · No drug or device payments recorded (2025) ·
(310) 517-3739 Dr. David Cheshire, M.D.Huntington Beach, CA · No drug or device payments recorded (2025) ·
(714) 964-4448 Dr. Roger Hinkson, MDHuntington Beach, CA · No drug or device payments recorded (2025) ·
(714) 378-0900 Dr. Herbert Jennings, MDIrvine, CA · No drug or device payments recorded (2025) ·
(949) 752-1111 Dr. Jay Westphal, M.D.Irvine, CA · No drug or device payments recorded (2025) ·
(949) 351-9890 Dr. Ronald Wempen, MDIrvine, CA · No drug or device payments recorded (2025) ·
(949) 557-8751 Dr. Virginia Schaefer, MDLaguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 652-2320 Dr. Scott Nelson, D.O., FACEPLaguna Woods, CA · No drug or device payments recorded (2025) ·
(949) 916-6321 Dr. Walter Maier, MD,MPHLake Arrowhead, CA · $18 in drug and device payments (2025) ·
(909) 337-3661 Dr. Gonzalo Ruiz, M.D.Lake Forest, CA · No drug or device payments recorded (2025) ·
(949) 581-3011 Dr. Roger Tauran, M.D., M.P.H.Lakewood, CA · No drug or device payments recorded (2025) ·
(562) 633-2273 Dr. Kigen Nagamoto, M.D., M.P.H.La Palma, CA · No drug or device payments recorded (2025) ·
(805) 490-7120 Dr. Robert Petrie, MDLa Quinta, CA · $63 in drug and device payments (2025) ·
(760) 777-7701 Dr. James Dunn, M.D., M.P.H.Lemoore, CA · No drug or device payments recorded (2025) ·
(858) 699-3475 Dr. Allison Depas, MDLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 651-5353 Dr. Matthew Chan, MDLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-4000 Dr. Jorge Bernardez, M.D.Long Beach, CA · No drug or device payments recorded (2025) ·
(562) 933-0085 Dr. Frank Gilliland, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 442-1096 Dr. Matthew Sies, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 642-0325 Dr. Natasha Narayan, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 646-5520 Dr. Robert Brooks, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(818) 705-3414 Dr. Susan Bradshaw, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 665-0300 Dr. Charity Styles, D.O., M.P.H.Menlo Park, CA · No drug or device payments recorded (2025) ·
(708) 722-2583 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.
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