Infectious Disease Specialists in California
Data updated monthly · Last refresh October 2026
1,121 Infectious Disease providers practice in California, including 322 (29%) 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.
1,121providers
322telehealth
Los Angelestop city
Infectious Disease by city in California
Choose a city to see providers there.
Infectious Disease 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. Umber Chohan, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(909) 427-5000 Dr. Robert Ryder, MDFort Bragg, CA · $25 in drug and device payments (2025) ·
(707) 964-1251 Dr. James Rooney, M.D.Foster City, CA · No drug or device payments recorded (2025) ·
(650) 522-5708 Dr. Mark Bresnik, MDFoster City, CA · No drug or device payments recorded (2025) ·
(650) 522-5934 Dr. Dalilah Restrepo, MDFountain Valley, CA · $111 in drug and device payments (2025) ·
(917) 376-0967 Dr. Elizabeth Nghiem, M.D.Fountain Valley, CA · $323 in drug and device payments (2025) · Telehealth ·
(714) 751-7002 Dr. Javier Davila, M.D.Fountain Valley, CA · No drug or device payments recorded (2025) ·
(714) 751-7002 Dr. John Lok, M.D.Fountain Valley, CA · No drug or device payments recorded (2025) ·
(714) 751-7002 Dr. Marvin Reyes, M.D.Fountain Valley, CA · No drug or device payments recorded (2025) ·
(714) 751-7002 Dr. Philip Goldstein, MDFountain Valley, CA · No drug or device payments recorded (2025) ·
(714) 751-7002 Dr. Sujata Lalla-reddy, M.D.Fountain Valley, CA · $13,563 in drug and device payments (2025) ·
(949) 478-1894 Dr. Tracy Zivin-tutela, MDFountain Valley, CA · No drug or device payments recorded (2025) ·
(732) 705-7506 Dr. Benedict Villanueva, M.D.Fremont, CA · $14 in drug and device payments (2025) · Telehealth ·
(510) 248-1550 Dr. Dianne Martin, MDFremont, CA · No drug or device payments recorded (2025) ·
(510) 248-1585 Dr. Harman Chawla, M.D.Fremont, CA · $223 in drug and device payments (2025) · Telehealth ·
(510) 248-1550 Dr. Jevon Tang, MDFremont, CA · $23 in drug and device payments (2025) · Telehealth ·
(510) 248-1550 Dr. Jyoti GuptaFremont, CA · No drug or device payments recorded (2025) · Telehealth ·
(510) 252-6862 Dr. Muni Barash, M.D.Fremont, CA · $261 in drug and device payments (2025) · Telehealth ·
(510) 248-1550 Dr. Susan Jacobson, MDFremont, CA · No drug or device payments recorded (2025) ·
(510) 795-3000 Dr. Sobya Hashmi, MDFrench Camp, CA · No drug or device payments recorded (2025) ·
(209) 468-6000 Dr. Anandit Mu, D.O., MPHFresno, CA · No drug or device payments recorded (2025) ·
(559) 320-1090 Dr. Babak Youssefi, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 320-1090 Dr. Dee Lacy, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 448-4500 Dr. Geetha Sivasubramanian, MDFresno, CA · No drug or device payments recorded (2025) · Telehealth ·
(559) 320-1090 Dr. Hebah Ghanem, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 320-1090 Dr. Jessica Mcfarland, MD Dr. Ji Il Jeon, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 459-4502 Dr. Manthani Reddy, M.D.Fresno, CA · $93 in drug and device payments (2025) · Telehealth ·
(559) 326-7393 Dr. Michele Maison-fomotar, MDFresno, CA · $184 in drug and device payments (2025) · Telehealth ·
(559) 320-1090 Dr. Nancy Dang-orita, MDFresno, CA · No drug or device payments recorded (2025) · Telehealth ·
(559) 320-1090 Dr. Nargis Naheed, M.D.Fresno, CA · No drug or device payments recorded (2025) ·
(559) 320-1090 Dr. Pushpalatha Arakere, M.D.Fresno, CA · $1,910 in drug and device payments (2025) ·
(559) 323-4987 Dr. Robert Libke, M.D.Fresno, CA · No drug or device payments recorded (2025) ·
(559) 320-1090 Dr. Sang Jo Hwang, DOFresno, CA · No drug or device payments recorded (2025) ·
(559) 499-6400 Dr. Sarah Pervaiz, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 448-4500 Dr. Michael Finney, M.D.Garden Grove, CA · No drug or device payments recorded (2025) ·
(714) 530-8042 Dr. Arash Alborzi, M.D.Glendale, CA · $319 in drug and device payments (2025) ·
(818) 550-1998 Dr. Byron Williams, M.D.Glendale, CA · $176 in drug and device payments (2025) · Telehealth ·
(818) 242-5299 Dr. Jean-pierre Antaki, M.D.Glendale, CA · $601 in drug and device payments (2025) · Telehealth ·
(818) 242-5299 Dr. Jessica Mantilla, MDGlendale, CA · $627 in drug and device payments (2025) ·
(818) 500-0935 Dr. Paola Tempesti, MDGlendale, CA · No drug or device payments recorded (2025) ·
(818) 500-0935 Dr. Wint Thu HunGlendale, CA · No drug or device payments recorded (2025) ·
(626) 662-8087 Dr. Nilesh Patel, MDGlendora, CA · $426 in drug and device payments (2025) · Telehealth ·
(626) 914-1514 Dr. Robert Lowe, M.D.Grass Valley, CA · $123 in drug and device payments (2025) ·
(530) 273-2221 Conditions Infectious Disease providers in California commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Infectious Disease providers. Individual practices vary, so confirm with the provider before booking.
- Long COVID
- HIV care
- Lyme disease
- Recurrent infections
- Travel medicine
Common questions
How many Infectious Disease providers are in California?There are 1,121 Infectious Disease providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Infectious Disease providers in California offer telehealth?Yes. 322 of the 1,121 Infectious Disease providers in California (about 29%) report offering telehealth services in CMS data.
Which cities in California have the most Infectious Disease providers?Los Angeles (145), San Francisco (108), San Diego (76) have the highest concentration of Infectious Disease providers in California.
How many Infectious Disease providers in California received drug or device company payments?419 of 1,121 Infectious Disease providers in California (37%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Infectious Disease providers in California treat?Infectious Disease providers commonly treat long COVID, HIV care, Lyme disease, recurrent infections, travel medicine and related conditions. Individual practices vary, so confirm with the provider before booking.
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 Infectious Disease Specialists in California work in independent practices or large health systems?Among 717 Infectious Disease Specialists in California enrolled in Medicare, 26% bill through a solo or small practice with fewer than 10 clinicians, 7% through a mid-size group of 10 to 99, and 68% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Infectious Disease Specialists in California work at?According to CMS facility affiliation records, the California hospitals where the most Infectious Disease Specialists hold privileges are Stanford Health Care in Stanford; UCSF Medical Center in San Francisco; Ronald Reagan UCLA Medical Center in Los Angeles.
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