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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. Indra De, MD, PHD
Stockton, CA · No drug or device payments recorded (2025) · (209) 943-2000
Dr. Manuel Orellana, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 941-8073
Dr. Piero Garzaro Garcia, MD
Stockton, CA · No drug or device payments recorded (2025) · (209) 476-2000
Dr. Myron Berdischewsky, M.D.
Studio City, CA · $85 in drug and device payments (2025) · (818) 769-2247
Dr. Arthur Jeng, M.D.
Sylmar, CA · $117,531 in drug and device payments (2025) · (818) 364-3205
Dr. Caitlin Reed, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Christine Balekian, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Michael Ben-aderet, MD
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-1555
Dr. Suzanne Donovan, M.D.
Sylmar, CA · No drug or device payments recorded (2025) · (818) 364-3205
Dr. Ajani Nimmagadda, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 996-1051
Dr. Derrick Yu, DO
Tarzana, CA · No drug or device payments recorded (2025) · Telehealth · (818) 506-3384
Dr. E Duane Carmalt, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 881-9255
Dr. Rina Daghlian
Tarzana, CA · $267 in drug and device payments (2025) · (818) 506-3384
Dr. Yoko Miyasaki, M.D.
Tarzana, CA · No drug or device payments recorded (2025) · (818) 506-3384
Dr. Richard Prier, M.D.
Templeton, CA · No drug or device payments recorded (2025) · (805) 434-0880
Dr. Andrew Ma, MD
Thousand Oaks, CA · $387 in drug and device payments (2025) · Telehealth · (805) 495-1073
Dr. Mark Mazur, MD
Thousand Oaks, CA · No drug or device payments recorded (2025) · (805) 495-1073
Dr. Philip Mcdonald, M.D.
Thousand Oaks, CA · $34 in drug and device payments (2025) · Telehealth · (805) 495-1073
Dr. Ramesh Nathan, MD
Thousand Oaks, CA · $195 in drug and device payments (2025) · Telehealth · (805) 495-1073
Dr. Sujay Dutta, MD
Thousand Oaks, CA · $3,330 in drug and device payments (2025) · (805) 495-1073
Dr. Angel Wang, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 222-3814
Dr. Anita Sircar, MD
Torrance, CA · No drug or device payments recorded (2025) · Telehealth · (310) 378-8900
Dr. Behzad Noorian, MD
Torrance, CA · $238 in drug and device payments (2025) · (310) 325-4445
Dr. Brad Spellberg, M.D.
Torrance, CA · $84 in drug and device payments (2025) · (310) 222-3813
Dr. Clifford Beck, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 222-5101
Dr. Daniel Ho, MD
Torrance, CA · No drug or device payments recorded (2025) · Telehealth · (310) 378-8900
Dr. David Rand, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 784-6954
Dr. Diana David, MD
Torrance, CA · $344 in drug and device payments (2025) · (310) 784-6952
Dr. Donald Whang, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 784-5880
Dr. Eric Daar, M.D.
Torrance, CA · $20,708 in drug and device payments (2025) · (310) 222-5101
Dr. Eric Jiang, DO
Torrance, CA · $44 in drug and device payments (2025) · (424) 306-4000
Dr. Eric Milefchik, MD
Torrance, CA · $42 in drug and device payments (2025) · Telehealth · (310) 784-6954
Dr. James Mckinnell, M.D.
Torrance, CA · $399,496 in drug and device payments (2025) · Telehealth · (310) 222-3814
Dr. John Chia, MD
Torrance, CA · $20 in drug and device payments (2025) · Telehealth · (310) 784-5880
Dr. Kyla Sherwood
Torrance, CA · No drug or device payments recorded (2025) · Telehealth · (310) 378-8900
Dr. Loren Miller, M.D.
Torrance, CA · $903 in drug and device payments (2025) · (310) 222-5101
Dr. Mallory Witt, M.D.
Torrance, CA · $597 in drug and device payments (2025) · (310) 222-2365
Dr. Meena Lagnese, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 214-0811
Dr. Michael Nakata, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 784-5880
Dr. Mona Yazdi, DO
Torrance, CA · No drug or device payments recorded (2025) · (310) 784-5880
Dr. Nour Khouzam, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 378-8900
Dr. Raul Macias Gil, M.D.
Torrance, CA · $11,914 in drug and device payments (2025) · (310) 222-3813
Dr. Richard Glimp, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 784-5880
Dr. Ruihong Luo, MD
Torrance, CA · No drug or device payments recorded (2025) · Telehealth · (310) 378-8900
Dr. Scott Filler, M.D.
Torrance, CA · $154 in drug and device payments (2025) · (310) 222-5101
Dr. Vladimir Labalo, M.D.
Torrance, CA · No drug or device payments recorded (2025) · Telehealth · (310) 784-6954
Dr. Praveena Sarma, MD
Tracy, CA · No drug or device payments recorded (2025) · Telehealth · (209) 833-0998
Dr. Brian Hogan, M.D.
Travis Afb, CA · No drug or device payments recorded (2025) · (707) 423-5053
Dr. Mark Derasmo, MD
Travis Afb, CA · $28 in drug and device payments (2025) · (707) 423-7342
Dr. Marquise Westbrook, MD
Travis Afb, CA · $52 in drug and device payments (2025) · (707) 423-3000

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.