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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. Peter Wolfe, M.D.
Los Angeles, CA · $2,642 in drug and device payments (2025) · (323) 954-1072
Dr. Phillip Zakowski, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 358-2300
Dr. Phyllis Guze, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 268-3125
Dr. Pryce Gaynor, M.D.
Los Angeles, CA · $169 in drug and device payments (2025) · Telehealth · (310) 481-4242
Dr. Quen Cheng
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-7663
Dr. Rachel Baden, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-7414
Dr. Rachel Civen
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 250-8653
Dr. Rachel Zabner Spielberger, M.D.
Los Angeles, CA · $33 in drug and device payments (2025) · Telehealth · (310) 358-2300
Dr. Randy Feldman, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 855-1960
Dr. Raphael Landovitz, MD
Los Angeles, CA · $26,158 in drug and device payments (2025) · (310) 557-2273
Dr. Rebecca Linfield, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-7663
Dr. Reid Goodman
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 409-7556
Dr. Richard Sokolov, MD
Los Angeles, CA · $251 in drug and device payments (2025) · Telehealth · (310) 358-5530
Dr. Risa Hoffman, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-7663
Dr. Robert Larsen
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 226-2170
Dr. Saahir Khan, M.D., PH.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Salam Alkasspooles, MD
Los Angeles, CA · $203 in drug and device payments (2025) · (310) 207-0020
Dr. Scott Lawler, PA
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 993-7400
Dr. Seema Mehta Steinke, M.D.. M.SC.
Los Angeles, CA · $57 in drug and device payments (2025) · Telehealth · (310) 206-7663
Dr. Seth Judson, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-7663
Dr. Shaker Itani, M.D.
Los Angeles, CA · $85 in drug and device payments (2025) · (323) 442-5100
Dr. Shakuntala Swaminathan, MD
Los Angeles, CA · $44 in drug and device payments (2025) · (323) 954-1788
Dr. Sheree Poitier, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 288-7837
Dr. Stephen Marer, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Stephen Puentes, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 846-4219
Dr. Steven Hwang, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 675-7781
Dr. Sun Park, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Tara Vijayan, MD.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 825-7225
Dr. Thaidra Gaufin, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Timothy Brewer, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-7663
Dr. Tomiko Stein, MD, MPH
Los Angeles, CA · $110 in drug and device payments (2025) · Telehealth · (323) 783-4798
Dr. Townson Tsai, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. William George, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 268-4290
Dr. William Schwartzman, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 268-3015
Dr. Winnie Huang, MD
Los Angeles, CA · $477 in drug and device payments (2025) · (323) 857-2000
Dr. Zachary Rubin, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 206-7663
Dr. Zin Oo, M.D.
Los Angles, CA · $639 in drug and device payments (2025) · (323) 869-5448
Dr. Minal Kapoor, MD
Los Gatos, CA · No drug or device payments recorded (2025) · (408) 722-7930
Dr. Rachana Palnitkar, M.D.
Los Gatos, CA · $125 in drug and device payments (2025) · Telehealth · (408) 374-5340
Dr. Sumit Majumder, M.D.
Los Gatos, CA · $125 in drug and device payments (2025) · (408) 374-5340
Dr. Hugh Fulmer, MD
Lynwood, CA · $195 in drug and device payments (2025) · (310) 605-0128
Dr. Bakht Roshan, MD
Madena, CA · $408 in drug and device payments (2025) · (559) 673-9021
Dr. Peter Katona, M.D.
Marina Del Rey, CA · No drug or device payments recorded (2025) · (310) 208-1967
Dr. Bryan Volpp, MD
Martinez, CA · No drug or device payments recorded (2025) · (925) 370-4169
Dr. Raghesh Varot Kangath, M.D
Martinez, CA · No drug or device payments recorded (2025) · (925) 372-2718
Dr. Shobha Sharma, DO
Martinez, CA · No drug or device payments recorded (2025) · (925) 370-5110
Dr. Thuy-trang Dang, MD
Martinez, CA · No drug or device payments recorded (2025) · (925) 372-4691
Dr. Barbara Weiser, M.D.
Mather, CA · No drug or device payments recorded (2025) · (916) 843-7000
Dr. Harold Burger, M.D.
Mather, CA · No drug or device payments recorded (2025) · (916) 843-7000
Dr. Raymond Byun
Mather, CA · No drug or device payments recorded (2025) · (916) 843-7031

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.