Colorectal Surgeons in California
Data updated monthly · Last refresh October 2026
200 Colon & Rectal Surgery providers practice in California, including 73 (37%) 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.
200providers
73telehealth
Los Angelestop city
Colon & Rectal Surgery by city in California
Choose a city to see providers there.
Colon & Rectal 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. Edward Kim, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 885-3606 Dr. Emily Finlayson, MDSan Francisco, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 885-3625 Dr. Hueylan Chern, M.D.San Francisco, CA · $2,669 in drug and device payments (2025) · Telehealth ·
(415) 885-3625 Dr. James Stricker, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 833-2000 Dr. Jeffrey Sternberg, M.D.San Francisco, CA · $26 in drug and device payments (2025) ·
(415) 417-3377 Dr. Laurence Yee, M.D.San Francisco, CA · $92 in drug and device payments (2025) · Telehealth ·
(415) 668-0411 Dr. Michael Abel, M.D.San Francisco, CA · $278 in drug and device payments (2025) · Telehealth ·
(415) 668-0411 Dr. Taehyun Chung, M.D.San Francisco, CA · $149 in drug and device payments (2025) · Telehealth ·
(415) 668-0411 Dr. Yanek Chiu, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 668-0411 Dr. Asya Ofshteyn, MD, MPHSan Jose, CA · $258 in drug and device payments (2025) ·
(408) 478-6750 Dr. Jamal Modir, MDSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 358-1933 Dr. Albert Chung, MD, MBASanta Ana, CA · $30 in drug and device payments (2025) ·
(714) 988-8690 Dr. Cristina Harnsberger, M.D.Santa Barbara, CA · $180 in drug and device payments (2025) ·
(805) 898-3140 Dr. Gregory Greaney, M.D.Santa Barbara, CA · $177 in drug and device payments (2025) ·
(805) 681-1761 Dr. Robert Allen, MDSanta Cruz, CA · No drug or device payments recorded (2025) ·
(831) 479-3772 Dr. Joel Dean, MDSanta Maria, CA · $203 in drug and device payments (2025) ·
(805) 346-3456 Dr. Sabrina Kidd, M.D.Santa Rosa, CA · $7,046 in drug and device payments (2025) ·
(707) 576-4000 Dr. David Wang, MDSherman Oaks, CA · $2,900 in drug and device payments (2025) · Telehealth ·
(818) 900-6480 Dr. Stephen Sentovich, M.D.South Pasadena, CA · No drug or device payments recorded (2025) ·
(626) 396-2900 Dr. Andrew Shelton, M.D.Stanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-3913 Dr. Charlotte Rajasingh, MDStanford, CA · $104 in drug and device payments (2025) ·
(650) 723-4000 Dr. Kim Rhoads, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 721-3094 Dr. Jennifer Mcneil, M.D.Stockton, CA · No drug or device payments recorded (2025) ·
(209) 946-6800 Dr. Charles Headrick, MDTarzana, CA · $101 in drug and device payments (2025) ·
(818) 996-8505 Dr. Mudjianto Chandra, M.D.Tarzana, CA · No drug or device payments recorded (2025) ·
(818) 709-8161 Dr. Beverley Petrie, M.D.Torrance, CA · $24 in drug and device payments (2025) ·
(310) 222-5015 Dr. David KollerTorrance, CA · $1,500 in drug and device payments (2025) · Telehealth ·
(310) 373-6864 Dr. Katherine Lee, MDTorrance, CA · No drug or device payments recorded (2025) ·
(424) 306-8086 Dr. Ravin Kumar, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-5189 Dr. Vijay Muraliraj, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 373-6864 Dr. Mark Scherrer, MDTravis Afb, CA · $15 in drug and device payments (2025) ·
(707) 423-5719 Dr. Doreen Jackson, MDTravis Air Force Base, CA · $49 in drug and device payments (2025) ·
(919) 753-6879 Dr. Mark Hanna, MDUpland, CA · No drug or device payments recorded (2025) · Telehealth ·
(909) 949-2242 Dr. Seija Maniskas, MD, MS Dr. Sahael Stapleton, MDVacaville, CA · No drug or device payments recorded (2025) ·
(707) 624-4000 Dr. Ching-fong Wu, DOVisalia, CA · $586 in drug and device payments (2025) ·
(559) 739-1698 Dr. Kyle Ota, M.D., MPHVisalia, CA · $2,710 in drug and device payments (2025) · Telehealth ·
(559) 738-7500 Dr. Dhruvil Gandhi, M.D.Vista, CA · $4,464 in drug and device payments (2025) · Telehealth ·
(760) 295-2924 Dr. Brian Mcguinness, M.D.Walnut Creek, CA · $389 in drug and device payments (2025) · Telehealth ·
(925) 274-9000 Dr. Piyush Aggarwal, MDWalnut Creek, CA · $33 in drug and device payments (2025) · Telehealth ·
(925) 296-7340 Dr. Poornima Vanguri, MDWalnut Creek, CA · $2,036 in drug and device payments (2025) ·
(925) 274-9000 Dr. Ran Kim, M.D.Walnut Creek, CA · $1,651 in drug and device payments (2025) · Telehealth ·
(925) 430-5613 Dr. Adam Truong, MDWest Hollywood, CA · $524 in drug and device payments (2025) · Telehealth ·
(310) 423-6637 Dr. Beth Moore, M.D.West Hollywood, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 854-3580 Dr. Lucille Yao, MDWest Hollywood, CA · $291 in drug and device payments (2025) ·
(310) 423-6637 Dr. Mari Madsen, M.D.West Hollywood, CA · $35 in drug and device payments (2025) ·
(310) 854-3580 Dr. Thomas Sokol, MDWest Hollywood, CA · $34 in drug and device payments (2025) ·
(310) 854-3580 Dr. Thomas Magrino, M.D.Woodland, CA · No drug or device payments recorded (2025) ·
(530) 666-1631 Dr. Wendy Liu, M.D.Woodland Hills, CA · No drug or device payments recorded (2025) ·
(818) 719-3750 Dr. Eric Fu, MDYorba Linda, CA · $23 in drug and device payments (2025) ·
(714) 646-9830 Common questions
How many Colon & Rectal Surgery providers are in California?There are 200 Colon & Rectal Surgery providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Colon & Rectal Surgery providers in California offer telehealth?Yes. 73 of the 200 Colon & Rectal Surgery providers in California (about 37%) report offering telehealth services in CMS data.
Which cities in California have the most Colon & Rectal Surgery providers?Los Angeles (19), Sacramento (12), Fresno (10) have the highest concentration of Colon & Rectal Surgery providers in California.
How many Colon & Rectal Surgery providers in California received drug or device company payments?126 of 200 Colon & Rectal Surgery providers in California (63%) 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 Colorectal Surgeons in California work in independent practices or large health systems?Among 142 Colorectal Surgeons in California enrolled in Medicare, 24% bill through a solo or small practice with fewer than 10 clinicians, 5% through a mid-size group of 10 to 99, and 71% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Colorectal Surgeons in California work at?According to CMS facility affiliation records, the California hospitals where the most Colorectal Surgeons hold privileges are Hoag Memorial Hospital Presbyterian in Newport Beach; Uci Health-Orange in Orange; Keck Hospital of Usc in Los Angeles.
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