Gastrointestinal Cancer Program Team
Joseph Poen  

Joseph C. Poen, M.D., Radiation Oncologist
Dr. Poen is a board-certified radiation oncologist with special training and interest in gastrointestinal cancer, including colorectal cancer. He received his medical degree at the University of California (Los Angeles), where he also completed his radiation oncology residency and received numerous academic honors. Prior to joining MCI in 2000, he was associated with Stanford University School of Medicine, where he was Director of the Gastrointestinal Comprehensive Cancer Clinic and Tumor Board, Associate Professor of Radiation Oncology, and principal investigator in radiation therapy research trials. He has lectured across the country and is widely published in peer-review journals on radiation oncology, including the treatment of pancreas cancer and a variety of other cancers.

“During the twenty years that I’ve been privileged to be involved in patient care my guiding principle has been to treat each patient as I would treat a member of my family. This requires making the time to see patients on short notice, seeking to understand all of the relevant medical and personal issues, providing information and answering questions until the patient is satisfied with their level of understanding, and ultimately delivering treatment with a level of quality that is second to none. The principle is simple to follow because it is the right thing to do."

     
Mark Bazalgette   Mark B. Bazalgette, M.D., Surgeon
Dr. Bazalgette received his medical education at the University of London, St. Thomas’ Hospital Medical School, London, England. He completed his internship and residency in General Surgery in Seattle, Washington, and his Fellowship in Colon and Rectal Surgery at the University of Minnesota. Dr. Bazalgette is a Fellow of the American Society of Colorectal Surgeons, a member of the Northern California Society of Colorectal Surgeons and the San Francisco Surgical Society. He has been in practice in Marin County since 1989.
     
Photo coming soon   Tim Sowerby, M.D., Gastroenterology
Dr. Sowerby graduated from Charing Cross and Westminster Medical School, University of London, England in 1987. He completed pre-registration house officer appointments (internships) in general surgery and medicine at the Queen Elizabeth Hospital, Kings Lynn and the West Middlesex University Hospital, London respectively. These were followed by senior house office appointments in family practice and medicine at Queen Elizabeth Hospital, Kings Lynn. In 1990 he moved to California. After a residency in internal medicine at Kaiser Foundation Hospital, San Francisco, he completed a fellowship in gastroenterology at Kaiser Foundation Hospital, Los Angeles. From 1995 to 2000 he was a member of the Permanente Medical Group practicing gastroenterology in both San Francisco and San Rafael. In 2000, Dr. Sowerby entered private practice in Marin County. Dr. Sowerby is Board Certified in Gastroenterology.
     
David Gullion   David Gullion, M.D., Medical Oncologist, Hematologist
Dr. Gullion has practiced medical oncology and hematology for 30+ years and is board-certified in medical oncology and hematology as well as internal medicine. He received his medical degree from the College of Physicians and Surgeons at Columbia University (New York) and completed his residency at the University of California (San Francisco), where he was chief resident. He received advanced training in medical oncology at the National Cancer Institute in Bethesda, Maryland. Following 20 years at UCSF, he joined the private practice of California Cancer Care, where he developed the Integrative Oncology Program, which focuses on supporting patients with complementary therapies. He has been involved in over 200 clinical research trials. Dr. Gullion is a member of the Marin General Hospital and Novato Community Hospital medical staffs.

"As I started practicing in Marin there was synchronicity with my desire to provide compassionate care in an environment which supported both Western medicine and healing integrative modalities. It quickly became paramount for me to develop and offer complementary supportive care such as Psychosocial counseling, Guided imagery, Jin Shin Jyutsu, Acupuncture, massage therapy, and Art for Healing at California Cancer Care. Caring for our patients in this manner is very rewarding and a privilege."

     


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