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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. Matthew Wikler, M.D.
San Diego, CA · $38,924 in drug and device payments (2025) · (858) 759-3456
Dr. Michael Butera, M.D.
San Diego, CA · $232 in drug and device payments (2025) · Telehealth · (619) 286-8803
Dr. Michael Tang, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 471-9062
Dr. Michele Ritter, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 543-6146
Dr. Michelle Kautz, DO
San Diego, CA · No drug or device payments recorded (2025) · (619) 532-7475
Dr. Morgan Birabaharan
San Diego, CA · No drug or device payments recorded (2025) · (610) 927-7591
Dr. Myres Tilghman, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6737
Dr. Nancy Kollisch, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 427-8699
Dr. Nancy Law, D.O.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 249-6751
Dr. Nehkonti Adams, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 532-8250
Dr. Norihiro Yogo, MD
San Diego, CA · $17 in drug and device payments (2025) · Telehealth · (858) 616-8091
Dr. Paul Turner, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (707) 728-5750
Dr. Pornthep Wattanamano, MD
San Diego, CA · $74 in drug and device payments (2025) · (713) 384-3229
Dr. Raymond Chinn, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 846-5890
Dr. Richard Mayer, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 573-4413
Dr. Robert Schooley, MD
San Diego, CA · $850 in drug and device payments (2025) · (800) 926-8273
Dr. Saima Aslam, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (713) 444-2930
Dr. Samuel Bozzette, MD, PHD
San Diego, CA · No drug or device payments recorded (2025) · (619) 920-4543
Dr. Sara Browne, M.D
San Diego, CA · No drug or device payments recorded (2025) · (858) 534-4848
Dr. Sharon Reed, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6146
Dr. Shira Abeles, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 543-6222
Dr. Shweta Warner, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 221-6258
Dr. Sindalisa Hean, MD
San Diego, CA · $255 in drug and device payments (2025) · (858) 832-2478
Dr. Steven Gardner, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 616-8091
Dr. Steven Larosa, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 459-7800
Dr. Sydney Ramirez, MD
San Diego, CA · $3,920 in drug and device payments (2025) · (619) 543-6268
Dr. Theodoros Katsivas, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 379-8664
Dr. Thomas Heineman, MD, PHD
San Diego, CA · No drug or device payments recorded (2025) · (610) 996-3866
Dr. Timothy Wilkin, MD
San Diego, CA · $32,672 in drug and device payments (2025) · (800) 926-8273
Dr. Tuan Dung Nguyen, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 302-7263
Dr. Vi Bowman, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. William Mathews, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-3995
Dr. Abhijit Limaye, MD
San Francisco, CA · $14,300 in drug and device payments (2025) · (415) 476-9362
Dr. Adolfo Cuesta, MD
San Francisco, CA · No drug or device payments recorded (2025) · (347) 263-7680
Dr. Andrew Faulk
San Francisco, CA · No drug or device payments recorded (2025) · (415) 827-2120
Dr. Andrew Kerkhoff
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Angelo Clemenzi-allen, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (413) 537-6483
Dr. Anne Fenton, MD
San Francisco, CA · $32 in drug and device payments (2025) · Telehealth · (415) 476-1528
Dr. Anne Luetkemeyer, MD
San Francisco, CA · $3,459 in drug and device payments (2025) · (415) 476-4082
Dr. Annelys Roque Gardner
San Francisco, CA · $15,696 in drug and device payments (2025) · Telehealth · (415) 476-5389
Dr. Anuj Gaggar, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-9363
Dr. Arjun Rustagi, M.D., PH.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Ayesha Appa, MD
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-8000
Dr. Bennett Penn, MD, PHD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2626
Dr. Bryan Greenhouse, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Bryn Boslett, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2626
Dr. Cameron Ashbaugh, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-5231
Dr. Carina Marquez, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Catherine Koss, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-1528
Dr. Charles Chiu, M.D., PH.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 514-8219

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.