General Surgeons in California
Data updated monthly · Last refresh October 2026
3,111 Surgery providers practice in California, including 468 (15%) 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.
3,111providers
468telehealth
Los Angelestop city
Surgery by city in California
Choose a city to see providers there.
Surgery 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. Eric Bennion, CCPPleasant Hill, CA · No drug or device payments recorded (2025) ·
(925) 324-8406 Dr. Carlos Gracia, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 416-3676 Dr. Chau Dang, MDPleasanton, CA · $91 in drug and device payments (2025) ·
(925) 460-3883 Dr. John Gahagan, M.D.Pleasanton, CA · No drug or device payments recorded (2025) · Telehealth ·
(925) 734-8130 Dr. Kevin Izquierdo, MDPleasanton, CA · $714 in drug and device payments (2025) ·
(925) 416-5470 Dr. Mark Dy-liacco, MDPleasanton, CA · $4,229 in drug and device payments (2025) ·
(925) 416-3440 Dr. Mary Estakhri, MDPleasanton, CA · No drug or device payments recorded (2025) · Telehealth ·
(925) 534-0500 Dr. Michael Gynn, MDPleasanton, CA · $1,530 in drug and device payments (2025) ·
(925) 416-3440 Dr. Raman Nambisan, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 460-3883 Dr. Samuel Liu, MDPleasanton, CA · $3,066 in drug and device payments (2025) ·
(925) 416-5470 Dr. William Yee, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 963-8948 Dr. Andrew Michael, MDPomona, CA · $2,061 in drug and device payments (2025) ·
(909) 865-9501 Dr. Johanna Basa, M.D.Pomona, CA · $1,352 in drug and device payments (2025) ·
(909) 398-4835 Dr. Lori Vanyo, MDPomona, CA · No drug or device payments recorded (2025) ·
(909) 766-1600 Dr. Marian Safaoui, MDPomona, CA · No drug or device payments recorded (2025) ·
(909) 706-3934 Dr. Ming-wei Wu, D.O.Pomona, CA · $302 in drug and device payments (2025) · Telehealth ·
(888) 434-8880 Dr. Ahmad Hakimi, MD, FACSPorterville, CA · $70 in drug and device payments (2025) ·
(559) 781-9922 Dr. Arturo Guzman, M.D.Porterville, CA · $86 in drug and device payments (2025) ·
(559) 784-1110 Dr. Christina Kwock, MDPorterville, CA · No drug or device payments recorded (2025) ·
(559) 544-6865 Dr. Raj Dwivedi, MDPorterville, CA · No drug or device payments recorded (2025) ·
(559) 781-2403 Dr. Ramasamy Seralathan, M.D.,Porterville, CA · No drug or device payments recorded (2025) ·
(559) 781-2000 Dr. Tejal Pandya, MDPorterville, CA · $151 in drug and device payments (2025) ·
(559) 782-8533 Dr. Jocelyn Dunn, MDPortola Valley, CA · No drug or device payments recorded (2025) ·
(650) 322-1737 Dr. Charles Callery, MDPoway, CA · No drug or device payments recorded (2025) ·
(858) 675-0883 Dr. Edmond Chan, M.D.Poway, CA · No drug or device payments recorded (2025) ·
(858) 485-5921 Dr. James Jacquet, MDPoway, CA · No drug or device payments recorded (2025) ·
(858) 521-0061 Dr. Jennifer Ottino, D.O.Poway, CA · No drug or device payments recorded (2025) ·
(858) 675-3100 Dr. Sam Filiciotto, M.D.Poway, CA · No drug or device payments recorded (2025) ·
(858) 487-8741 Dr. Ben Hunt, MDQuincy, CA · No drug or device payments recorded (2025) ·
(530) 283-2121 Dr. Steen Jensen, MD FACSQuincy, CA · No drug or device payments recorded (2025) ·
(530) 283-1506 Dr. Vencent Frantz, MDQuincy, CA · No drug or device payments recorded (2025) ·
(530) 283-1506 Dr. John Hackert, MDRancho Cordova, CA · No drug or device payments recorded (2025) ·
(916) 202-4297 Dr. Amanda Khouri, MDRancho Cucamonga, CA · No drug or device payments recorded (2025) ·
(909) 987-0899 Dr. Brian Spivack, M.D.Rancho Cucamonga, CA · No drug or device payments recorded (2025) ·
(909) 946-5320 Dr. Jacob Haiavy, M.D.Rancho Cucamonga, CA · $505 in drug and device payments (2025) ·
(909) 987-0899 Dr. Matthew Ogbeide, MDRancho Cucamonga, CA · No drug or device payments recorded (2025) ·
(909) 944-0486 Dr. Emma Ryan, DORancho Cucuamonga, CA · $488 in drug and device payments (2025) ·
(909) 987-0899 Dr. Norby Wang, M.D.Rancho Miraage, CA · $33 in drug and device payments (2025) ·
(760) 837-8601 Dr. Bobby Bhasker-rao, MDRancho Mirage, CA · $4,938 in drug and device payments (2025) ·
(760) 778-5220 Dr. James Caterine, M.D.Rancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 324-9432 Dr. Jorge Almodovar, M.D.Rancho Mirage, CA · $113 in drug and device payments (2025) · Telehealth ·
(760) 837-8601 Dr. Justin Reckard, MDRancho Mirage, CA · $167 in drug and device payments (2025) · Telehealth ·
(760) 776-7600 Dr. Karl Schulz, MDRancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 346-8771 Dr. Maria Lombardo, DORancho Mirage, CA · $915 in drug and device payments (2025) ·
(760) 610-8990 Dr. Matthew Hannon, MDRancho Mirage, CA · $3,578 in drug and device payments (2025) ·
(760) 340-3911 Dr. Nhat Nguyen-minh, M.D.Rancho Mirage, CA · $428 in drug and device payments (2025) ·
(760) 837-8601 Dr. Peter Schulz, MDRancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 346-8771 Common questions
How many Surgery providers are in California?There are 3,111 Surgery providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Surgery providers in California offer telehealth?Yes. 468 of the 3,111 Surgery providers in California (about 15%) report offering telehealth services in CMS data.
Which cities in California have the most Surgery providers?Los Angeles (260), San Francisco (205), San Diego (158) have the highest concentration of Surgery providers in California.
How many Surgery providers in California received drug or device company payments?1,519 of 3,111 Surgery providers in California (49%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
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 General Surgeons in California work in independent practices or large health systems?Among 1,794 General Surgeons in California enrolled in Medicare, 24% bill through a solo or small practice with fewer than 10 clinicians, 14% through a mid-size group of 10 to 99, and 62% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do General Surgeons in California work at?According to CMS facility affiliation records, the California hospitals where the most General Surgeons hold privileges are Stanford Health Care in Stanford; UCSF Medical Center in San Francisco; Ronald Reagan UCLA Medical Center in Los Angeles.
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