HealthcareDiscovery.AI / Doctors / California / Infectious Disease

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. Monica Fung, M.D., M.P.H
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2626
Dr. Monica Gandhi, MD
San Francisco, CA · $33,207 in drug and device payments (2025) · (415) 502-6285
Dr. Moupali Das, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 823-0050
Dr. Natalie Richmond, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (704) 589-1367
Dr. Natasha Spottiswoode, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-1528
Dr. Oliver Bacon, M.D.
San Francisco, CA · $91 in drug and device payments (2025) · (415) 353-2119
Dr. Padmini Srikantiah, M.D. MPH
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-4082
Dr. Paul Baum, MD, PHD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-2400
Dr. Paul Sullam, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Peter Chin-hong, MD
San Francisco, CA · $197 in drug and device payments (2025) · (415) 476-9362
Dr. Peter Dull, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Peter Hunt, MD
San Francisco, CA · $21,856 in drug and device payments (2025) · (415) 476-4082
Dr. Peter Jensen, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Phyllis Tien
San Francisco, CA · $61 in drug and device payments (2025) · (415) 221-4810
Dr. Qi Quan Leong, M.D.
San Francisco, CA · $556 in drug and device payments (2025) · Telehealth · (415) 379-2900
Dr. Rachel Bystritsky
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2626
Dr. Rachel Rutishauser, PH.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8102
Dr. Saman Kannangara, MD
San Francisco, CA · $311 in drug and device payments (2025) · Telehealth · (415) 379-2980
Dr. Sarah Puryear, M.D., M.P.H.
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-2400
Dr. Sarah Rudman, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2626
Dr. Shawn Hassler, M.D.
San Francisco, CA · $64,622 in drug and device payments (2025) · Telehealth · (415) 397-0700
Dr. Shelley Gordon, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 923-3883
Dr. Shereen Katrak, MD
San Francisco, CA · $64 in drug and device payments (2025) · (154) 353-2119
Dr. Sophia Lewis, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2626
Dr. Stephanie Cohen, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 225-9558
Dr. Stephen Cohen, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 681-2171
Dr. Steven Yukl, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Su Aung, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (401) 444-6118
Dr. Sulggi Lee, MD, PHD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 735-5127
Dr. Susannah Graves, MD
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-8524
Dr. Susan Philip, MD MPH
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-5438
Dr. Suzanne Noble, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2125
Dr. Timothy Henrich, M.D.
San Francisco, CA · $4,125 in drug and device payments (2025) · (415) 476-1000
Dr. Tomas Aragon, M.D., DR.P.H.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 787-2583
Dr. Tyler Luu, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-9362
Dr. Uri Lopatin, M.D,
San Francisco, CA · No drug or device payments recorded (2025) · (415) 935-1874
Dr. Vanessa Wormser, DO
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 379-2900
Dr. Vivek Jain, M.D.
San Francisco, CA · $77 in drug and device payments (2025) · (415) 476-9363
Dr. William Simmons, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2626
Dr. Yiannis Koullias, MD
San Francisco, CA · No drug or device payments recorded (2025) · (347) 633-3400
Dr. Alex Studemeister, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-5000
Dr. Carol Hu, M.D.
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 885-5935
Dr. David Stevens, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-4302
Dr. Gulshan Bhatia, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-6316
Dr. Henry Selke, DO
San Jose, CA · No drug or device payments recorded (2025) · (408) 347-4051
Dr. Julie Higashi, MD, PHD
San Jose, CA · No drug or device payments recorded (2025) · (408) 792-1317
Dr. Laurence Mirels, MD
San Jose, CA · No drug or device payments recorded (2025) · (408) 885-4310
Dr. Michael Charney, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 286-6470
Dr. Preethi Yeturu, M.D.
San Jose, CA · No drug or device payments recorded (2025) · Telehealth · (408) 885-5000
Dr. Rani Ramachandran, M.D.
San Jose, CA · No drug or device payments recorded (2025) · (408) 294-2399

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

Related

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.