Print Doctors who treat this condition Edit search filters close Narrow your search By location Rochester, MN Phoenix/Scottsdale, AZ Jacksonville, FL By last name Find a doctor whose last name begins with the letter A A Find a doctor whose last name begins with the letter B B Find a doctor whose last name begins with the letter C C Find a doctor whose last name begins with the letter D D Find a doctor whose last name begins with the letter E E Find a doctor whose last name begins with the letter F F Find a doctor whose last name begins with the letter G G Find a doctor whose last name begins with the letter H H Find a doctor whose last name begins with the letter I I Find a doctor whose last name begins with the letter J J Find a doctor whose last name begins with the letter K K Find a doctor whose last name begins with the letter L L Find a doctor whose last name begins with the letter M M Find a doctor whose last name begins with the letter N N Find a doctor whose last name begins with the letter O O Find a doctor whose last name begins with the letter P P Find a doctor whose last name begins with the letter Q Q Find a doctor whose last name begins with the letter R R Find a doctor whose last name begins with the letter S S Find a doctor whose last name begins with the letter T T Find a doctor whose last name begins with the letter U U Find a doctor whose last name begins with the letter V V Find a doctor whose last name begins with the letter W W Find a doctor whose last name begins with the letter X X Find a doctor whose last name begins with the letter Y Y Find a doctor whose last name begins with the letter Z Z Reset all filters Search Tips Use quotes for phrases. Even if there are no auto-suggestions within the search field, hit "Search" anyway, as you may still get results. Displaying 2761-2770 out of 3849 doctors available Krishnan Ramanujan, M.D. Rochester, MN Kannan Ramar, M.D., M.B.A. Critical Care Specialist Pulmonologist Sleep Medicine Specialist Rochester, MN Francisco C. Ramirez, M.D. Internist Gastroenterologist Phoenix, AZ Areas of focus: Upper endoscopy, Colon cancer Tamra I. Ranasinghe, M.B.B.S. Vascular Neurologist Phoenix, AZ Areas of focus: Intracerebral hemorrhage, Ischemic stroke, Embolic stroke Mohammad Ranginwala, M.B.B.S. Internist Oncologist Hematologist Rochester, MN Areas of focus: Cancer Matthew A. Rank, M.D. Internist Pediatrician Allergist-Immunologist Phoenix, AZ Areas of focus: Immunotherapy, Eosinophilic esophagitis, Primary immunodeficiency, Asthma, Sinusitis, Hives and angioedema, Drug allerg...y, Food allergy, Rhinitis, Insect bite allergy, Environmental allergy Show more areas of focus for Matthew A. Rank, M.D. Dinesh Rao, M.D. Neuroradiologist Jacksonville, FL Rohit R. Rao, M.B.B.S., M.D. Hematologist / Oncologist Jacksonville, FL Areas of focus: Breast cancer Sarika N. Rao, D.O. Endocrinologist Jacksonville, FL Areas of focus: Cancer, Cushing syndrome, MEN 1, Thyroid disease, Adrenal cancer, Pheochromocytoma, Thyroid cancer, Thyroid nodule, Mul...tiple endocrine neoplasia type 2, Paraganglioma, Adrenal insufficiency, Adrenal incidentaloma, Aldosteronoma, Parathyroid disease Show more areas of focus for Sarika N. Rao, D.O. Claire E. Raphael, M.B.B.S., Ph.D. Interventional Cardiologist Rochester, MN Areas of focus: Coronary angioplasty and stenting, Coronary angiogram, Coronary physiology assessment, Atherectomy, Coronary artery dis...ease, Heart attack, Coronary artery spasm, Myocardial ischemia, Coronary endothelial dysfunction Show more areas of focus for Claire E. Raphael, M.B.B.S., Ph.D. Pagination Doctor search PrevPrevious Page Go to page 275275 Go to page 276276 Go to page 277277 Go to page 278278 Go to page 279279 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 July 18, 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 Double your impact on cancer! Give NowMake a gift before July 31 and it can be doubled in impact thanks to a $100,000 Summer Challenge. Give Now