Who We Are
C4 is a statewide, 501-c(3) all-volunteer non-profit organization consisting of academic clinicians (family medicine, gastroenterology, general research, surgical oncology, nurse practitioner specialists, and pathology), Kaiser physicians, public health practitioners (nonprofits and state health departments), CRC survivors and advocates, American Cancer Society, American Cancer Society – Cancer Action Network, clinicians working for or with FQHC, and a CA tribal nations advocate. We are united in our mission to save lives and reduce suffering from colorectal cancer in all Californians.
Executive Board
Daniel Anderson, MD, FACP – President
Dr. Daniel S. Anderson is a Volunteer Clinical Professor of Medicine at the University of California San Diego. Since 1984, he has been a Gastroenterologist
Margaret Hitchcock, PhD – Vice President
Margaret Hitchcock, PhD is a founding board member of the California Colorectal Cancer Coalition (C4) and currently serves as Vice President. She chairs and administers
Joanne Wellman – Secretary/Treasurer
Joanne Wellman retired in 2017 after working 27 years as a health educator. Her first career was as a dental hygienist, and practiced for 13
Board Members
Autumn Ogden-Smith
Autumn Ogden-Smith joined the American Cancer Society Cancer Action Network in February of 2015 as California’s State Legislative Director. Autumn brings more than 20 years
Celena Donahue
I am Pueblo Indian, and my family is Hupa, Yurok, and Karuk. I was raised on the Hoopa Valley Indian Reservation in rural northeastern Humboldt
Folasade May, MD, MPhil, PhD
Dr. May is an Associate Professor of Medicine in the Vatche and Tamar Manoukian Division of Digestive Diseases at the University of California Los Angeles
Gregory Idos, MD
Dr. Gregory Idos MD, MS is a board-certified gastroenterologist and clinical cancer geneticist. He specializes in the care of patients with hereditary cancer syndromes, notably
James Allison, MD
Dr. Allison received a BA with honors from the University of Pennsylvania, and, in 1969, his MD from the University of Rochester. His entire post
Jon Greif, DO, FACS
Dr. Greif is a retired cancer surgeon and researcher who lives and practiced surgery in San Diego with the United States Navy and Kaiser Permanente,
Laura Goetz, MD, MPH
Dr. Laura Goetz started her career as a colorectal surgeon and spent over 15 years caring for colorectal cancer patients. She then chose to change
Lori Ludlow
Lori Ludlow is the Sr. Director, Strategic Partnerships for the West Region of the American Cancer Society. With 20 years of experience in the early
Lukejohn Day, M.D.
Dr. Day is a professor of medicine at UCSF, Chief Medical Officer at the Zuckerberg San Francisco General Hospital (ZSFG) and current president of the
Michael Potter, MD
Dr. Michael Potter is a graduate of Harvard College and Harvard Medical School, and he completed his residency in family medicine and clinical research training
Samir Gupta, MD, MSCS
Dr. Samir Gupta is a Professor in the Division of Gastroenterology in the Department of Internal Medicine at the University of California, San Diego. He
T. R. Levin MD
T. R. Levin is the Clinical Lead for Colorectal Cancer Screening for The Permanente Medical Group, Inc. He is also the Interim Associate Director for
Ex Offico
Shauntay Davis-Patterson, MPH
Shauntay Davis-Patterson is the current Program Director for California’s Comprehensive Cancer Control Program housed under the California Department of Public Health. Mrs. Davis-Patterson is responsible