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Colorectal Cancer Specialists in CaliforniaPage 5

114 verified specialists treating colorectal cancer are listed for California. Coverage is strongest around Santa Monica, Antioch, and Highland. Common hospital affiliations include UCLA Medical Center Santa Monica & Orthopaedic Hospital, Ronald Reagan UCLA Medical Center, and Alta Bates Summit Medical Center.

Nikita Baclig

Nikita Baclig, M.D.

Clinical Instructor

Hematology

Santa Monica, CA10+ years
GI OncologyHematology & OncologyMedical Oncology
Giovanni Begossi

Giovanni Begossi, M.D.

Oncology

Antioch, CA30+ years
Surgical Oncology
Richard Strong

Richard Strong, M.D.

Associate Professor, Medicine-Gastroenterology and Hepatology

Gastroenterology

Highland, CA
Colorectal Cancer Screening
Jennifer Valerin

Jennifer Valerin, M.D.

Assistant Professor, Division of Hematology/Oncology, Department of Medicine, UC Irvine School of Medicine

Oncology

Orange, CA15+ years
GI OncologyMedical Oncology
Cynthia Martel

Cynthia Martel, M.D.

Assistant Professor of Clinical Medicine, USC Keck School of Medicine

Hematology

Pasadena, CA20+ years
Hematology & OncologyMedical Oncology
Thomas Semrad

Thomas Semrad, M.D., M.A.S.

Associate Clinical Professor (WOS) of Hematology/Oncology, UC Davis Medical Center

Hematology

Truckee, CA20+ years
GI OncologyHematology & OncologyMedical Oncology
Joe Pastrano

Joe Pastrano, MD

Neuroradiology

Oncology

Oakland, CA30+ years
Radiation Oncology
Randy Fanous

Randy Fanous, M.D

Oncology

San Diego, CA15+ years
Radiation Oncology
Rita Sohlich

Rita Sohlich, MD

Leader, Breast Imaging Specialists Team, Sutter Palo Alto Medical Foundation

Oncology

Palo Alto, CA30+ years
Radiation Oncology
George Barnes

George Barnes, MD

Medical Director of Advanced Wound Care and Hyperbaric Medicine

Oncology

Valencia, CA30+ years
Surgical Oncology
Richard Wasley

Richard Wasley, M.D.

Medical Director, MemorialCare Imaging Center at Orange Coast Medical Center; Medical Director of Radiology at Saddleback Medical Center

Oncology

Laguna Beach, CA30+ years
Radiation Oncology
Jhemon Lee

Jhemon Lee, MD

Vice Chair, UCI Health – Los Alamitos, Department of Radiological Sciences

Oncology

Los Alamitos, CA30+ years
Radiation Oncology
Gretchen Stipec

Gretchen Stipec, M.D.

Oncology

Long Beach, CA30+ years
Radiation Oncology
Madhavi Mummaneni

Madhavi Mummaneni, MD

Hematology

Orange, CA20+ years
Hematology & Oncology
Gol Golshani

Gol Golshani, M.D

Assistant Clinical Professor

Hematology

Laguna Hills, CA10+ years
Hematology & Oncology
Roderick Rapier

Roderick Rapier, MD

Gastroenterology

Gastroenterology

San Diego, CA30+ years
Colorectal Cancer Screening
Cameron Gaskill

Cameron Gaskill, M.D.

Section Chief for Hepato-Pancreato-Biliary Surgery; Chair of the UC Davis Committee on Cancer

Oncology

Sacramento, CA10+ years
Surgical Oncology
Kenzo Hirose

Kenzo Hirose, MD

Gastrointestinal Surgical Oncology

Oncology

San Francisco, CA20+ years
GI Oncology
Mwanasha Merrill

Mwanasha Merrill, MD

Medical Oncology

Oncology

San Francisco, CA8 years
Genitourinary Oncology
Melanie Majure

Melanie Majure, MD

Breast Medical Oncology

Oncology

San Francisco, CA15+ years
Medical Oncology

Browse colorectal cancer specialists by city in California

Drill into a specific California city to see vetted colorectal cancer specialists practicing there.

Frequently Asked Questions

How is this list of colorectal cancer specialists in California built?
This page includes physicians in Convene Health's public directory whose profile lists Colorectal Cancer as a clinical focus area and whose practice state is California. Providers are ordered by composite score (research output, peer recognition, frequency of care, and outcomes signals).
What should I look for when choosing a colorectal cancer specialist in California?
Start with clinical fit. Compare credentials, hospital affiliations, years of experience, and how the profile describes their approach to colorectal cancer. Many of these specialists are concentrated in major medical centers — drill into a specific city below to see who's nearest you.
Are these colorectal cancer specialists accepting new patients in California?
Profile detail on availability and accepted insurance varies. Open a specific provider profile to see what they've published about new-patient access, insurance accepted, and typical wait times.
What is Colorectal Cancer?
Colorectal Cancer is a clinical focus area covered by the specialists listed here. Each provider profile describes their training, sub-specialties, and the conditions they regularly treat — open a profile for the most authoritative description of how that specific physician approaches colorectal cancer care.