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. Jia-yia Liu, MDWest Hollywood, CA · No drug or device payments recorded (2025) ·
(310) 423-3277 Dr. John Michael Sanchez, MDWest Hollywood, CA · $910 in drug and device payments (2025) ·
(310) 423-3277 Dr. Lena HeungWest Hollywood, CA · No drug or device payments recorded (2025) ·
(424) 315-4615 Dr. Mehmet Pekerol, MDWest Hollywood, CA · $25 in drug and device payments (2025) ·
(310) 858-0880 Dr. Vivian Shirvani, M.D., M.P.H.West Hollywood, CA · No drug or device payments recorded (2025) ·
(310) 657-9277 Dr. Ziba Jalali, MDWest Hollywood, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 423-3896 Dr. Dharushana Muthulingam, MDWestlake Village, CA · $44 in drug and device payments (2025) ·
(805) 371-1393 Dr. Fang-yu Liu, MDWestlake Village, CA · No drug or device payments recorded (2025) · Telehealth ·
(805) 371-1393 Dr. Joseph Nussbaum, MDWestlake Village, CA · No drug or device payments recorded (2025) ·
(213) 483-0901 Dr. Antonio Escobedo, MDWhittier, CA · No drug or device payments recorded (2025) · Telehealth ·
(562) 947-3307 Dr. Bryan Doo, M.D.Whittier, CA · No drug or device payments recorded (2025) ·
(562) 214-0130 Dr. John MccarthyWhittier, CA · $57 in drug and device payments (2025) ·
(626) 912-5767 Dr. Meri Rathbun, MDWhittier, CA · No drug or device payments recorded (2025) ·
(562) 464-5396 Dr. Uday Chauhan, MDWhittier, CA · $170 in drug and device payments (2025) ·
(562) 980-6969 Dr. Sudershan Singh, MDWoodland, CA · No drug or device payments recorded (2025) · Telehealth ·
(530) 668-2600 Dr. Arleen Rockoff, MDWoodland Hills, CA · No drug or device payments recorded (2025) ·
(818) 719-2000 Dr. Jose Dryjanski, MDWoodland Hills, CA · No drug or device payments recorded (2025) ·
(818) 719-2000 Dr. Beena Shah, M.D.Yorba Linda, CA · $35 in drug and device payments (2025) ·
(714) 547-7008 Dr. Raza Iqbal, M.D.Yorba Linda, CA · No drug or device payments recorded (2025) ·
(714) 896-9697 Dr. Jagraj Nijjar, M.D.Yuba City, CA · $29 in drug and device payments (2025) · Telehealth ·
(832) 716-6221 Dr. Marwa Hammoud, MDYuba City, CA · $54 in drug and device payments (2025) ·
(530) 751-3769 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.
Related reading on HealthcareDiscovery.AI
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