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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 in Los Angeles145 providers
Infectious Disease in San Francisco108 providers
Infectious Disease in San Diego76 providers
Infectious Disease in Stanford58 providers
Infectious Disease in Sacramento56 providers
Infectious Disease in Torrance26 providers
Infectious Disease in Orange23 providers
Infectious Disease in Fresno20 providers
Infectious Disease in Loma Linda18 providers
Infectious Disease in Walnut Creek18 providers
Infectious Disease in Long Beach17 providers
Infectious Disease in Pasadena16 providers
Infectious Disease in Palo Alto15 providers
Infectious Disease in La Jolla15 providers
Infectious Disease in Santa Monica14 providers
Infectious Disease in San Jose14 providers
Infectious Disease in Oakland13 providers
Infectious Disease in Newport Beach13 providers
Infectious Disease in Bakersfield11 providers
Infectious Disease in Pomona10 providers
Infectious Disease in San Mateo9 providers
Infectious Disease in Santa Ana9 providers
Infectious Disease in Santa Barbara9 providers
Infectious Disease in Modesto8 providers

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. Aric Gregson, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7225
Dr. Aruna Murthy, M.D.
Los Angeles, CA · $1,743 in drug and device payments (2025) · (310) 423-2641
Dr. Ashlyn Sakona
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-7663
Dr. Ashrit Multani, M.B.B.S.
Los Angeles, CA · $80 in drug and device payments (2025) · Telehealth · (310) 206-7663
Dr. Austin Fan, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (800) 872-2273
Dr. Bernard Kubak, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-7663
Dr. Bor-han Chiu, D.O.
Los Angeles, CA · $125 in drug and device payments (2025) · (310) 734-8526
Dr. Brenda Jones
Los Angeles, CA · $22 in drug and device payments (2025) · (323) 226-2170
Dr. Britta Lassmann, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 794-6671
Dr. Catherine Chien, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 741-9727
Dr. Chelsea Morinishi, MD
Los Angeles, CA · $182 in drug and device payments (2025) · (310) 206-7663
Dr. Cherie Blair, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7375
Dr. Christine Wigen, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 744-3070
Dr. Christopher Foltz, M.D.
Los Angeles, CA · $193 in drug and device payments (2025) · Telehealth · (310) 358-2300
Dr. Christopher Graber, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 268-3763
Dr. Christopher Tymchuk, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 267-9643
Dr. Claire Brown, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 557-2273
Dr. Claire Panosian, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-6301
Dr. Daniel Uslan, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7225
Dr. David Beenhouwer, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 268-3015
Dr. David Fuller, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 318-0442
Dr. David Goodman, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-7663
Dr. David Haake, M.D.
Los Angeles, CA · $29,737 in drug and device payments (2025) · (310) 268-3814
Dr. David Rhew, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 486-5744
Dr. David Zamora Diaz, MD
Los Angeles, CA · $32 in drug and device payments (2025) · (310) 825-8373
Dr. Debika Bhattacharya, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 557-2273
Dr. Dennis Schaberg, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 268-3125
Dr. Drew Winston, MD
Los Angeles, CA · $28 in drug and device payments (2025) · (310) 825-6264
Dr. Elise Martin
Los Angeles, CA · $34 in drug and device payments (2025) · (310) 825-7225
Dr. Eriko Masuda, MD
Los Angeles, CA · $84 in drug and device payments (2025) · (424) 529-6577
Dr. Erin Dizon, M.D.
Los Angeles, CA · $115 in drug and device payments (2025) · (424) 296-3976
Dr. Francoise Kramer, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 666-1556
Dr. Fred Sattler, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Gilmer Youn, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 869-5448
Dr. Gisela Rosario Rosario, M.D.
Los Angeles, CA · $794 in drug and device payments (2025) · Telehealth · (310) 358-2300
Dr. Glenn Mathisen, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Harold Glenn San Agustin, M.D.
Los Angeles, CA · $53,042 in drug and device payments (2025) · (323) 442-5100
Dr. Hayden Lowenstein, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 385-2300
Dr. Irving Posalski, M.D.
Los Angeles, CA · $123 in drug and device payments (2025) · Telehealth · (310) 855-1960
Dr. Jacob Fleischmann, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-6454
Dr. Jamie Lin, M.D.
Los Angeles, CA · $476 in drug and device payments (2025) · (323) 502-0683
Dr. Jay Gladstein, M.D.
Los Angeles, CA · $125,046 in drug and device payments (2025) · (323) 215-1725
Dr. Jean Gibb
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Jeffrey Rapp, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 855-1960
Dr. Jennifer Fulcher, M.D., PH.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-7225
Dr. Jens Kort
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-2170
Dr. Jessica Costales-cantrell, DO
Los Angeles, CA · $472 in drug and device payments (2025) · (323) 783-0339
Dr. Ji Hoon Baang, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-7663
Dr. Jillian Oft, MD
Los Angeles, CA · $26 in drug and device payments (2025) · Telehealth · (310) 358-2300
Dr. Jim Nomura, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011

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.

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

Infectious Disease in all 50 states Search all 1,121 in the directory Ask Zach for help choosing

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Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Infectious Disease in California? Get featured.