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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. Valerie Chirurgi, MD
Pleasanton, CA · No drug or device payments recorded (2025) · (925) 463-1318
Dr. Andrew Pumerantz, D.O.
Pomona, CA · No drug or device payments recorded (2025) · (909) 706-3779
Dr. Daniel Gluckstein, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 275-7470
Dr. Irene Bakman, MD
Pomona, CA · $18 in drug and device payments (2025) · (909) 275-7470
Dr. John Mourani, MD
Pomona, CA · $25 in drug and device payments (2025) · (909) 275-7470
Dr. Kanokrat Suksompoth, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 275-7470
Dr. Kerry Gott, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 596-7733
Dr. Nishita Patel, MD
Pomona, CA · $132 in drug and device payments (2025) · (909) 706-8332
Dr. Ossama Maloule, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 275-7470
Dr. Vinod Dhawan, MD
Pomona, CA · No drug or device payments recorded (2025) · (909) 865-5023
Dr. Ye Oo
Pomona, CA · $14 in drug and device payments (2025) · (951) 929-6260
Dr. Jocelyn Keehner
Poway, CA · No drug or device payments recorded (2025) · Telehealth · (858) 312-5459
Dr. Nella Green, M.D.
Poway, CA · No drug or device payments recorded (2025) · (858) 312-5459
Dr. Roger Bitar, MD
Poway, CA · $33 in drug and device payments (2025) · (858) 312-5459
Dr. Sandeep Soni, M.D.
Poway, CA · $1,193 in drug and device payments (2025) · (858) 312-5459
Dr. Sarah Ettinger, M.D.
Poway, CA · $452 in drug and device payments (2025) · (858) 312-5459
Dr. Taliha Yasin, MD
Poway, CA · $295 in drug and device payments (2025) · (732) 776-4483
Dr. Farzana Qureshi, M.D.
Rancho Mirage, CA · $395 in drug and device payments (2025) · (760) 202-0686
Dr. Massoud Dezfuli, D.O.
Rancho Mirage, CA · $1,022 in drug and device payments (2025) · (760) 834-3545
Dr. Vallari Patel, M.D.
Rancho Mirage, CA · $56 in drug and device payments (2025) · Telehealth · (760) 834-3545
Dr. Susanna Tan, M.D.
Rancho Santa Margarita, CA · No drug or device payments recorded (2025) · (626) 319-8791
Dr. Akari Kyaw, MD
Redding, CA · $114 in drug and device payments (2025) · (530) 244-8349
Dr. Kelly Kynaston, D.O.
Redding, CA · $168 in drug and device payments (2025) · Telehealth · (530) 225-6000
Dr. Matthew Miles, M.D.
Redding, CA · $139 in drug and device payments (2025) · (530) 225-6000
Dr. Michelle Yap, MD
Redding, CA · No drug or device payments recorded (2025) · (530) 226-7649
Dr. Sutton Menezes, M.D.
Redding, CA · No drug or device payments recorded (2025) · (530) 510-6038
Dr. Darvin Smith
Redwood City, CA · $22,813 in drug and device payments (2025) · (650) 299-2742
Dr. Malika Kheraj, MD
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Manoj Ray, M.D.
Redwood City, CA · No drug or device payments recorded (2025) · (650) 299-2000
Dr. Nagma Hossain, MD
Redwood City, CA · $102 in drug and device payments (2025) · Telehealth · (650) 299-2000
Dr. Ulf Fritz Bredeek Mendes, M.D., PHD
Redwood City, CA · $52 in drug and device payments (2025) · Telehealth · (650) 817-2117
Dr. Pennan Barry, MD, MPH
Richmond, CA · No drug or device payments recorded (2025) · (510) 620-3041
Dr. Adam Baghban, MD
Riverside, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Jon Persichino, D.O.
Riverside, CA · $978 in drug and device payments (2025) · Telehealth · (951) 782-3694
Dr. Khin Wong, MD
Riverside, CA · No drug or device payments recorded (2025) · (909) 353-2000
Dr. Mohsen Aljayeh, MD
Riverside, CA · No drug or device payments recorded (2025) · (800) 669-7716
Dr. Steven Larson, MD
Riverside, CA · No drug or device payments recorded (2025) · (951) 782-3618
Dr. Sudhakar Mallela, M.D.
Riverside, CA · No drug or device payments recorded (2025) · Telehealth · (951) 468-1306
Dr. Warren Howard, MD
Riverside, CA · No drug or device payments recorded (2025) · (909) 353-2000
Dr. Bilal Naseer, M.D
Roseville, CA · No drug or device payments recorded (2025) · (916) 679-3590
Dr. Javeed Siddiqui, MD, MPH
Roseville, CA · $262,513 in drug and device payments (2025) · Telehealth · (916) 740-3721
Dr. Jose Mario D Fontanilla, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 784-5655
Dr. Meryl Perez, M.D.
Roseville, CA · $293 in drug and device payments (2025) · Telehealth · (916) 679-3590
Dr. Ranjani Kalyan, M.D.
Roseville, CA · $135 in drug and device payments (2025) · (916) 786-7498
Dr. Igor Abolnik, MD
Rureka, CA · No drug or device payments recorded (2025) · (707) 443-9371
Dr. Alan Koff
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-2737
Dr. Alexandra Santiago-vazquez
Sacramento, CA · $116 in drug and device payments (2025) · Telehealth · (916) 443-3299
Dr. Andrew Mcneil, MD
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-6166
Dr. Angela Gomez-simmonds, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (530) 752-8294
Dr. Angelique Tjen-a-looi, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 973-5000

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.