Surgical Oncologists in California
Data updated monthly · Last refresh October 2026
253 Surgical Oncology providers practice in California, including 98 (39%) 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.
253providers
98telehealth
Los Angelestop city
Surgical Oncology by city in California
Choose a city to see providers there.
Where Surgical Oncologists in California practice
From CMS Medicare enrollment records covering 182 of the 253 providers listed here (72%). Providers who do not bill Medicare are not included in these figures.
14%solo or small practice (under 10 clinicians)
8%mid-size group (10 to 99)
78%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Surgical Oncologists | All clinicians in group | Main city |
| City of Hope Medical Foundation | 28 | 964 | South Pasadena |
| Cedars-Sinai Medical Care Foundation | 12 | 1,684 | Pasadena |
| Cedars-Sinai Medical Center | 11 | 788 | West Hollywood |
| Southern California Permanente Medical Group | 10 | 11,250 | Los Angeles |
| UCSF Dept of Surgery | 10 | 211 | San Francisco |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Surgical Oncologists affiliated |
| Cedars-Sinai Medical Center | Los Angeles | Nonprofit | 5 of 5 | 17 |
| Ronald Reagan UCLA Medical Center | Los Angeles | Government | 4 of 5 | 11 |
| UCSF Medical Center | San Francisco | Nonprofit | 4 of 5 | 9 |
| Saint John's Health Center | Santa Monica | Nonprofit | 4 of 5 | 9 |
| Uci Health-Orange | Orange | Government | 4 of 5 | 9 |
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.
Surgical Oncology 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. Christopher Mcnicoll, M.D.Anaheim, CA · $3,636 in drug and device payments (2025) ·
(833) 574-2273 Dr. William Tseng, M.D.Arcadia, CA · $27 in drug and device payments (2025) · Telehealth ·
(626) 218-9840 Dr. Joseph Dotan, MDBeaumont, CA · No drug or device payments recorded (2025) ·
(951) 845-6681 Dr. Jaikrishna Balkissoon, MDBerkeley, CA · No drug or device payments recorded (2025) ·
(510) 548-1717 Dr. Jeffrey SternBerkeley, CA · $66 in drug and device payments (2025) ·
(510) 204-5745 Dr. Kristi Funk, M.D.Beverly Hills, CA · $137 in drug and device payments (2025) ·
(310) 273-8002 Dr. Leslie Memsic, M.D.Beverly Hills, CA · $176 in drug and device payments (2025) · Telehealth ·
(310) 278-8200 Dr. Susan MasseyBeverly Hills, CA · No drug or device payments recorded (2025) ·
(310) 273-8002 Dr. Carlie Thompson, M.D.Burbank, CA · $3,167 in drug and device payments (2025) ·
(818) 333-2555 Dr. Danielle Graham, M.D.Burbank, CA · $328 in drug and device payments (2025) · Telehealth ·
(818) 333-2555 Dr. Geoffrey Krampitz, M.D., PH.D.Burlingame, CA · $26,175 in drug and device payments (2025) · Telehealth ·
(650) 652-8787 Dr. Kimberly Dalal, MDBurlingame, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 652-8787 Dr. Dana DominguezChico, CA · $3,555 in drug and device payments (2025) · Telehealth ·
(530) 332-4700 Dr. Judi Anne Ramiscal, MDColton, CA · $1,510 in drug and device payments (2025) ·
(909) 580-3360 Dr. Parisa Malekzadeh, M.D.Corona, CA · No drug or device payments recorded (2025) · Telehealth ·
(951) 898-2828 Dr. Stephanie Angarita, M.D.Downey, CA · No drug or device payments recorded (2025) ·
(562) 657-2713 Dr. Annie Tang, M.D.Duarte, CA · $882 in drug and device payments (2025) · Telehealth ·
(800) 826-4673 Dr. Aziz Ahmad, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Bridget Fahy-chandon, M.D. Dr. Carlos Garberoglio, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Christina Poloni, D.O.Duarte, CA · No drug or device payments recorded (2025) ·
(800) 826-4673 Dr. Fairouz Chibane, MDDuarte, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 256-4673 Dr. Gagandeep Singh, MDDuarte, CA · $1,536 in drug and device payments (2025) · Telehealth ·
(626) 775-3200 Dr. Isaac Paz, MDDuarte, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 359-8111 Dr. Jennifer TsengDuarte, CA · $1,960 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Kelly Mahuron, M.D.Duarte, CA · $160 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Lucas Thornblade, MD MPHDuarte, CA · $2,179 in drug and device payments (2025) ·
(206) 543-3687 Dr. Maheswari Senthil, M.D.Duarte, CA · $28,678 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Maithao Le, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 471-7100 Dr. Mustafa Raoof, M.D.Duarte, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 256-4673 Dr. Rahim Aimaq, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Ryan Lamm, M.D.Duarte, CA · $8,965 in drug and device payments (2025) ·
(516) 547-7676 Dr. Shaila Merchant, MSC, MHSC, MDDuarte, CA · $4,474 in drug and device payments (2025) ·
(626) 256-4673 Dr. Sinziana Dumitra, M.D., MSC(EPI), FRCSDuarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Thinzar Lwin, MDDuarte, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 256-4673 Dr. Vijay Trisal, MDDuarte, CA · No drug or device payments recorded (2025) · Telehealth ·
(626) 359-8111 Dr. Yanghee Woo, M.D.Duarte, CA · $36,141 in drug and device payments (2025) · Telehealth ·
(626) 396-2900 Dr. Yuchen You, DODuarte, CA · $9,177 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Yuman Fong, MDDuarte, CA · $13,291 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Blaine Morton, MDFontana, CA · No drug or device payments recorded (2025) ·
(909) 427-3910 Dr. Amir Fathi, MDFresno, CA · $42,255 in drug and device payments (2025) · Telehealth ·
(559) 256-5140 Dr. Meelod Daneshvar-hosseini, MD Common questions
How many Surgical Oncology providers are in California?There are 253 Surgical Oncology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Surgical Oncology providers in California offer telehealth?Yes. 98 of the 253 Surgical Oncology providers in California (about 39%) report offering telehealth services in CMS data.
Which cities in California have the most Surgical Oncology providers?Los Angeles (38), Duarte (27), San Diego (16) have the highest concentration of Surgical Oncology providers in California.
How many Surgical Oncology providers in California received drug or device company payments?148 of 253 Surgical Oncology providers in California (58%) 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 Surgical Oncologists in California work in independent practices or large health systems?Among 182 Surgical Oncologists in California enrolled in Medicare, 14% bill through a solo or small practice with fewer than 10 clinicians, 8% through a mid-size group of 10 to 99, and 78% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Surgical Oncologists in California work at?According to CMS facility affiliation records, the California hospitals where the most Surgical Oncologists hold privileges are Cedars-Sinai Medical Center in Los Angeles; Ronald Reagan UCLA Medical Center in Los Angeles; UCSF Medical Center in San Francisco.
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