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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. Anucheat Chea, M.D.
Greenbrae, CA · No drug or device payments recorded (2025) · (415) 526-8726
Dr. Gregg Tolliver, M.D.
Greenbrae, CA · No drug or device payments recorded (2025) · Telehealth · (415) 924-1214
Dr. Rina Marfatia, M.B.B.S., M.D.
Greenbrae, CA · No drug or device payments recorded (2025) · (415) 795-7000
Dr. Gisela Schecter, M.D.
Half Moon Bay, CA · No drug or device payments recorded (2025) · (650) 726-1200
Dr. Andrew Lai, MD
Harbor City, CA · No drug or device payments recorded (2025) · (310) 517-3307
Dr. Charles Garcia, MD
Harbor City, CA · No drug or device payments recorded (2025) · (310) 325-5111
Dr. Jared Spotkov, MD
Harbor City, CA · No drug or device payments recorded (2025) · (310) 325-5111
Dr. Julie Lee, MD
Harbor City, CA · No drug or device payments recorded (2025) · Telehealth · (424) 251-7060
Dr. Daniel Klein, MD
Hayward, CA · No drug or device payments recorded (2025) · (510) 784-4000
Dr. Mark Finch, M.D.
Hayward, CA · No drug or device payments recorded (2025) · Telehealth · (510) 881-0644
Dr. Meenu Vaid, M.D.
Hollister, CA · $99 in drug and device payments (2025) · (831) 635-9788
Dr. Nikita Satapathy, DO
Huntington Beach, CA · $30 in drug and device payments (2025) · (623) 203-2920
Dr. Shawn Crum, D.O., M.P.H.
Huntington Beach, CA · No drug or device payments recorded (2025) · (714) 903-7767
Dr. Shobita Rajagopalan, MD, MPH
Inglewood, CA · No drug or device payments recorded (2025) · (310) 330-1533
Dr. Thomas Yoo, MD
Inglewood, CA · No drug or device payments recorded (2025) · (626) 344-7797
Dr. Evalyn Horowitz, M.D.
Ione, CA · No drug or device payments recorded (2025) · (209) 274-4911
Dr. Ahmet Tural, MD
Irvine, CA · No drug or device payments recorded (2025) · (800) 826-4673
Dr. Danniel Zamora, M.D.
Irvine, CA · No drug or device payments recorded (2025) · Telehealth · (800) 826-4673
Dr. Farjad Sarafian, MD
Irvine, CA · No drug or device payments recorded (2025) · Telehealth · (949) 940-8092
Dr. Jung-i Yang, M.D.
Irvine, CA · $108 in drug and device payments (2025) · (949) 552-5108
Dr. Ming Tan, M.D.
Irvine, CA · No drug or device payments recorded (2025) · (949) 824-3397
Dr. Lael Duncan, MD
Kentfield, CA · No drug or device payments recorded (2025) · (415) 456-9680
Dr. Mary Ann Leal, M.D.
La Canada, CA · No drug or device payments recorded (2025) · (818) 952-9437
Dr. James Pennington, M.D.
Lafayette, CA · No drug or device payments recorded (2025) · (925) 899-5922
Dr. Michael Ascher, M.D.
Lafayette, CA · No drug or device payments recorded (2025) · (925) 283-7134
Dr. Jagadeesh Reddy, M.D.
Laguna Beach, CA · $11,213 in drug and device payments (2025) · Telehealth · (949) 715-0505
Dr. Kamran Hamidi, MD
Laguna Beach, CA · No drug or device payments recorded (2025) · (310) 201-2871
Dr. Alan White, MD
Laguna Hills, CA · No drug or device payments recorded (2025) · (949) 344-8270
Dr. Joanna Kopacz, MD
Laguna Hills, CA · $122 in drug and device payments (2025) · (949) 218-7251
Dr. Janet Hammond, MD PHD
Laguna Niguel, CA · No drug or device payments recorded (2025) · (949) 461-6453
Dr. Alina Adeel, M.D
La Jolla, CA · $31 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Anne Cowell, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · Telehealth · (619) 543-6146
Dr. David Redfield, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · Telehealth · (858) 554-8005
Dr. Gines Miralles, M.D.
La Jolla, CA · $95 in drug and device payments (2025) · (858) 784-3070
Dr. Herman Miller, MD
La Jolla, CA · $24 in drug and device payments (2025) · (858) 457-0034
Dr. Jennifer Dan, M.D., PH.D.
La Jolla, CA · No drug or device payments recorded (2025) · Telehealth · (858) 822-0333
Dr. Maria Savoia, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · (858) 534-4848
Dr. Mary Lewinski, M.D., PH.D.
La Jolla, CA · No drug or device payments recorded (2025) · (858) 552-7439
Dr. Michael Doud, MD
La Jolla, CA · No drug or device payments recorded (2025) · (800) 926-8273
Dr. Michael Preziosi, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · Telehealth · (858) 824-5484
Dr. Miguel Goicoechea, M.D.
La Jolla, CA · $279 in drug and device payments (2025) · Telehealth · (858) 554-9100
Dr. Monika Kumaraswamy, M.D.
La Jolla, CA · $11,505 in drug and device payments (2025) · (858) 534-4848
Dr. Sara Tamizuddin, MD
La Jolla, CA · $125 in drug and device payments (2025) · Telehealth · (858) 824-5484
Dr. Theo Kirkland, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · (858) 752-7989
Dr. Wun-ling Chang, M.D.
La Jolla, CA · $25 in drug and device payments (2025) · (858) 202-1736
Dr. Fareed Asfour, M.D.
Lakeport, CA · No drug or device payments recorded (2025) · Telehealth · (628) 600-3589
Dr. Liza Chavez, M.D.
Lakewood, CA · No drug or device payments recorded (2025) · (562) 633-2204
Dr. Fadi Haddad
La Mesa, CA · $409 in drug and device payments (2025) · Telehealth · (619) 376-1904
Dr. Mohammed Miradi, M.D.
La Mesa, CA · No drug or device payments recorded (2025) · (619) 644-1483
Dr. Harry Nickle, M.D.
Lancaster, CA · No drug or device payments recorded (2025) · (661) 723-3244

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.