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Even if there are no auto-suggestions within the search field, hit "Search" anyway, as you may still get results. Displaying 1-10 out of 76 doctors available Last Name Initial: O Erin K. O'Brien, M.D. Otolaryngologist Rochester, MN Areas of focus: Endoscopic procedure, CSF leak, Nasal and paranasal tumors, Nasal polyps, Samter's triad, Chronic sinusitis Marcia L. O'Brien, M.D. Family Physician Rochester, MN Cumara B. O'Carroll, M.D., M.P.H. Neurologist Phoenix, AZ Areas of focus: Telestroke, Stroke D. Fearghas O'Cochlain, M.D. Interventional Cardiologist Conor D. O'Donnell, M.B., B.Ch., B.A.O. Oncologist Jacksonville, FL Areas of focus: Chemotherapy for colon cancer, Colon cancer, Rectal cancer, Anal cancer, Pancreatic cancer, Esophageal cancer, Cholangi...ocarcinoma, Stomach cancer, Hepatocellular carcinoma Show more areas of focus for Conor D. O'Donnell, M.B., B.Ch., B.A.O. Shawn W. O'Driscoll, M.D., Ph.D. Orthopedic Surgeon Sports Medicine Specialist Rochester, MN Areas of focus: Shoulder arthroscopy, Shoulder replacement surgery, Cartilage repair, Elbow arthroscopy, Sports injury, Osteoarthritis,... Golfer's elbow, Tennis elbow, Labral tear, Osteochondritis dissecans, Shoulder impingement syndrome, Articular cartilage injury, Tendinopathy, Broken elbow, Elbow impingement, Biceps tear Show more areas of focus for Shawn W. O'Driscoll, M.D., Ph.D. Jason S. O'Grady, Sr., M.D. Family Physician Rochester, MN Connor Q. O'Hare, M.D. Emergency Medicine Physician Phoenix, AZ Jack C. O'Horo, M.D., M.P.H. Internist Critical Care Specialist Infectious Disease Specialist Rochester, MN Areas of focus: Intensive care, Infection control, Infection, Sepsis, General infectious diseases Madeleine B. O'Keefe, M.D. Pediatric Hematologist / Oncologist Rochester, MN Areas of focus: Lymphoma, Acute lymphocytic leukemia, Acute myelogenous leukemia, Non-Hodgkin's lymphoma, Hodgkin lymphoma, Diffuse lar...ge b-cell lymphoma, Acute leukemia, Burkitt lymphoma Show more areas of focus for Madeleine B. O'Keefe, M.D. Pagination Doctor search Go to page 11 Go to page 22 Go to page 33 Go to page 44 Go to page 55 NextNext Page Research Mayo Clinic doctors and researchers in gastrointestinal cancer research and gastroenterology and hepatology research study new ways to prevent, diagnose and treat colon cancer. Colon cancer research is conducted in coordination with Mayo Clinic Comprehensive Cancer Center. Mayo Clinic Comprehensive Cancer Center receives funding from the National Cancer Institute and is designated as a comprehensive cancer center. This designation recognizes the institution's scientific excellence and multidisciplinary resources focused on cancer prevention, diagnosis and treatment. Mayo Clinic also keeps a Colon Cancer Family Registry as part of an international research consortium studying the genetic and molecular epidemiology of colorectal cancer. A central goal of the Colon Cancer Family Registry is the translation of colorectal cancer research to the clinical and preventive settings for the benefit of registry participants and the general public. PublicationsSee a list of publications about colon cancer by Mayo Clinic doctors on PubMed, a service of the National Library of Medicine. By Mayo Clinic Staff Stage 4 (metastatic) colon cancer care at Mayo Clinic Request an appointment Diagnosis & treatmentCare at Mayo Clinic June 21, 2025 Print Stage 4 (metastatic) colon cancerSymptoms&causesDiagnosis&treatmentDoctors&departmentsCare atMayoClinic Research: It's all about patients Show transcript for video Research: It's all about patients [MUSIC PLAYING] Joseph Sirven, M.D., Professor of Neurology, Mayo Clinic: Mayo's mission is about the patient. The patient comes first. So the mission and research here is to advance how we can best help the patient, how to make sure the patient comes first in care. So in many ways, it's a cycle. It can start with as simple as an idea worked on in a laboratory, brought to the patient bedside, and if everything goes right — and let's say it's helpful or beneficial — then brought on as a standard approach. And I think that is one of the unique characteristics of Mayo's approach to research — that patient-centeredness — that really helps to put it in its own spotlight. CON-20583552 Diseases & Conditions Stage 4 (metastatic) colon cancer Fuel groundbreaking medical research! Give TodayYour donation powers the future of medicine and helps save lives. Give Today