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. Charles Langelier, M.D., PH.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2626
Dr. Daniel Goodman, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 861-7907
Dr. Daniel Minter, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (888) 689-8273
Dr. David Busch, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 923-3883
Dr. David-huy Nguyen, M.D., PH.D.
San Francisco, CA · $22 in drug and device payments (2025) · Telehealth · (415) 476-1528
Dr. David Sears, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (628) 206-8000
Dr. Dong Heun Lee, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-9362
Dr. Donna Defreitas, M.D.
San Francisco, CA · $552 in drug and device payments (2025) · (415) 750-5736
Dr. Edward Machtinger, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2119
Dr. Emilio De Narvaez, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-9363
Dr. Emily Lydon, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-1000
Dr. Emma Bainbridge, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-2400
Dr. Erin Hsu, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 923-3883
Dr. Farrell Tobolowsky, D.O.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 531-9047
Dr. Franco Chevalier, MD
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-2400
Dr. Gabriel Ortiz, MD, PHD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-8322
Dr. Gifford Leoung, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 474-7900
Dr. Grace Haser
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-9363
Dr. Gregory Melcher, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 552-2814
Dr. Gustavo Velasquez, M.D., M.P.H.
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-2400
Dr. Harry Lampiris, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 379-5608
Dr. Heidi Hopkins, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 206-4908
Dr. Helen Gunthorpe, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 713-4728
Dr. Henry Chambers Iii, MD
San Francisco, CA · $850 in drug and device payments (2025) · (415) 206-5438
Dr. Huyen Cao, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-9936
Dr. Jack Mcgregor, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 923-3883
Dr. Jane Koehler, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 353-2626
Dr. Janice Louie, MD, MPH
San Francisco, CA · No drug or device payments recorded (2025) · (916) 479-0143
Dr. Jennifer Ling, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 923-3883
Dr. Jesse Nussbaum, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-9363
Dr. Jessica Briggs, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-8000
Dr. Joel Palefsky, MD
San Francisco, CA · $22,262 in drug and device payments (2025) · (415) 353-7100
Dr. John Colford, MD, MPH, PHD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. John Fangman, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 476-9362
Dr. John Nienow, MD
San Francisco, CA · $1,869 in drug and device payments (2025) · (415) 202-1550
Dr. John Szumowski, M.D., M.P.H.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Jorge Salazar, MD
San Francisco, CA · $154 in drug and device payments (2025) · (415) 353-2626
Dr. Jose Eguia, MD
San Francisco, CA · No drug or device payments recorded (2025) · (415) 831-6441
Dr. Joseph Wong, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 221-4810
Dr. Julia Wagner
San Francisco, CA · No drug or device payments recorded (2025) · (618) 580-6225
Dr. Kathleen Jordan, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 753-4546
Dr. Kathy Thompson
San Francisco, CA · No drug or device payments recorded (2025) · (415) 581-3111
Dr. Layli Jamali, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 379-2980
Dr. Lisa Danzig
San Francisco, CA · No drug or device payments recorded (2025) · (510) 541-7680
Dr. Liza Valdivia, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 353-2626
Dr. Lory Wiviott, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 923-3883
Dr. Luis Rubio, MD, MHS
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (915) 637-3564
Dr. Max Mcclure
San Francisco, CA · No drug or device payments recorded (2025) · (628) 206-2400
Dr. Melicent Peck, M.D., PHD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 476-9362
Dr. Michael Reid, MD
San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (415) 206-2403

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.