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.
Where Colorectal Surgeons in California practice
From CMS Medicare enrollment records covering 142 of the 200 providers listed here (71%). Providers who do not bill Medicare are not included in these figures.
24%solo or small practice (under 10 clinicians)
5%mid-size group (10 to 99)
71%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Colorectal Surgeons | All clinicians in group | Main city |
| Southern California Permanente Medical Group | 12 | 11,250 | Anaheim |
| University Surgeons of Orange A Medical Group | 7 | 116 | Orange |
| Usc Care Medical Group Inc. | 6 | 1,378 | Los Angeles |
| City of Hope Medical Foundation | 5 | 964 | Irvine |
| Sutter Valley Medical Foundation | 4 | 2,473 | Sacramento |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Colorectal Surgeons affiliated |
| Hoag Memorial Hospital Presbyterian | Newport Beach | Nonprofit | 5 of 5 | 8 |
| Uci Health-Orange | Orange | Government | 4 of 5 | 8 |
| Keck Hospital of Usc | Los Angeles | Nonprofit | 5 of 5 | 6 |
| Cedars-Sinai Medical Center | Los Angeles | Nonprofit | 5 of 5 | 6 |
| Community Regional Medical Center | Fresno | Nonprofit | 1 of 5 | 5 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
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. Anil Bahadursingh, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(714) 279-5431 Dr. Henry Hwu, MDAnaheim, CA · $1,037 in drug and device payments (2025) ·
(888) 988-2800 Dr. Maryam Saidy, M.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Yasmin ZerhouniArcadia, CA · $134 in drug and device payments (2025) · Telehealth ·
(626) 218-9840 Dr. Alexandra Elias, MDBakersfield, CA · $943 in drug and device payments (2025) · Telehealth ·
(661) 326-2000 Dr. Lorenc Malellari, MDBakersfield, CA · $9,101 in drug and device payments (2025) ·
(661) 716-7100 Dr. David Magner, M.D.Beverly Hills, CA · $37 in drug and device payments (2025) · Telehealth ·
(310) 421-4292 Dr. Eiman Firoozmand, M.D.Beverly Hills, CA · $146 in drug and device payments (2025) · Telehealth ·
(310) 273-2310 Dr. Liza Capiendo, M.D.Beverly Hills, CA · $1,109 in drug and device payments (2025) ·
(310) 273-2310 Dr. Maziar Ghodsian, D.O.Beverly Hills, CA · No drug or device payments recorded (2025) ·
(800) 280-6384 Dr. Stephen Yoo, M.D.Beverly Hills, CA · No drug or device payments recorded (2025) ·
(310) 273-2310 Dr. Zuri Murrell, M.D.Beverly Hills, CA · $31,935 in drug and device payments (2025) · Telehealth ·
(310) 854-3580 Dr. Alexander Tovar, M DBurbank, CA · $499 in drug and device payments (2025) ·
(818) 848-8311 Dr. Scott Sligh, M.D.Burbank, CA · No drug or device payments recorded (2025) ·
(818) 848-8840 Dr. Harold Bohman, M.D.Camp Pendleton, CA · No drug or device payments recorded (2025) ·
(760) 725-1356 Dr. John Anane-sefah, M.D.Capitola, CA · No drug or device payments recorded (2025) ·
(831) 476-5403 Dr. James Myers, MDCarmichael, CA · No drug or device payments recorded (2025) ·
(916) 966-6121 Dr. Joseph Matthews, MDChico, CA · No drug or device payments recorded (2025) ·
(530) 891-4523 Dr. Kevin Dorsey-tyler, M.D., PH.D.Chico, CA · No drug or device payments recorded (2025) ·
(530) 891-4523 Dr. Michael Fealk, D.O.Chico, CA · No drug or device payments recorded (2025) ·
(530) 891-4523 Dr. Michael Wright, MDChico, CA · No drug or device payments recorded (2025) ·
(925) 324-6969 Dr. Matthew Whealon, MDColton, CA · $24 in drug and device payments (2025) · Telehealth ·
(909) 580-3353 Dr. Andreas Kaiser, M.D.Duarte, CA · $119 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Julio Garcia-aguilar, MDDuarte, CA · $291 in drug and device payments (2025) · Telehealth ·
(626) 359-8111 Dr. Harris Goldman, M DEncino, CA · No drug or device payments recorded (2025) ·
(818) 788-2001 Dr. Vemuru Sunil Reddy, MDEncino, CA · No drug or device payments recorded (2025) · Telehealth ·
(818) 387-8725 Dr. Ngoc Patrick Nguyen, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3909 Dr. Robert Yuhan, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Tam Le, M.D.Fountain Valley, CA · $1,822 in drug and device payments (2025) ·
(714) 861-4560 Dr. Bassem Ghobrial, M.D.French Camp, CA · $242 in drug and device payments (2025) ·
(209) 468-6000 Dr. Deepa Sharma, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 450-7200 Dr. Gabrielle PerrottiFresno, CA · $2,353 in drug and device payments (2025) ·
(559) 440-0283 Dr. Leonard Lovalvo, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 438-7780 Dr. Wai Lee, M.D.Fresno, CA · $137 in drug and device payments (2025) · Telehealth ·
(559) 261-4500 Dr. Dong Hum Yoon, MDFullerton, CA · $23 in drug and device payments (2025) ·
(714) 408-4249 Dr. Kevin Kinzinger, M.D.Fullerton, CA · $84 in drug and device payments (2025) ·
(714) 408-4249 Dr. Roy Won, M.D.Fullerton, CA · No drug or device payments recorded (2025) ·
(714) 408-4249 Dr. Anamaria Mcelrath-garza, M.D.Glendale, CA · $61 in drug and device payments (2025) ·
(818) 244-8161 Dr. Carmen Ruiz, MDGlendale, CA · No drug or device payments recorded (2025) ·
(818) 244-8161 Dr. Dena Nasir, MDGlendale, CA · $857 in drug and device payments (2025) ·
(818) 730-3726 Dr. Petar Vukasin, M.D.Glendale, CA · $220 in drug and device payments (2025) ·
(818) 244-8161 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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