Print Departments and specialties Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery. Departments that treat this condition Cancer Care at Mayo Clinic Clinical Genomics Colon and Rectal Surgery Early-Onset and Hereditary GI Cancers Program Early-Onset Colorectal Cancer Group Gastroenterology and Hepatology Gastrointestinal Neoplasia Clinic Laboratory Medicine and Pathology Oncology (Medical) Surgery Doctors who treat this condition Edit search filters close Narrow your search By location Phoenix/Scottsdale, AZ Rochester, MN By last name There are no doctors 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 There are no doctors whose last name begins with the letter F F There are no doctors whose last name begins with the letter G G There are no doctors whose last name begins with the letter H H There are no doctors whose last name begins with the letter I I There are no doctors whose last name begins with the letter J J There are no doctors 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 There are no doctors whose last name begins with the letter O O There are no doctors whose last name begins with the letter P P There are no doctors whose last name begins with the letter Q Q Find a doctor whose last name begins with the letter R R active Find a doctor whose last name begins with the letter S S There are no doctors whose last name begins with the letter T T There are no doctors whose last name begins with the letter U U There are no doctors whose last name begins with the letter V V Find a doctor whose last name begins with the letter W W There are no doctors whose last name begins with the letter X X There are no doctors whose last name begins with the letter Y Y There are no doctors 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 1-2 out of 2 doctors available Last Name Initial: S Jewel J. Samadder, M.D. Gastroenterologist Phoenix, AZ Areas of focus: Colonoscopy, Endoscopic procedure, Endoscopic mucosal resection, Familial adenomatous polyposis, Barrett's esophagus, B...RCA gene mutation, MUTYH-associated polyposis, Lynch syndrome, Juvenile polyposis syndrome, Peutz-Jeghers syndrome, Cowden syndrome Show more areas of focus for Jewel J. Samadder, M.D. Dan A. Schupack, M.D. Gastroenterologist Rochester, MN Areas of focus: Upper endoscopy, Colonoscopy, Colon cancer, Familial adenomatous polyposis, Lynch syndrome, Polyposis syndromes ResearchMayo Clinic researchers are actively investigating new ways to identify and care for people with Lynch syndrome. They also are looking into new ways to prevent cancer. Mayo Clinic doctors have made many important discoveries that have contributed to the improved care of people with Lynch syndrome. For example, Mayo Clinic researchers were among the first to recognize microsatellite instability (MSI) in cancer cells. Those researchers developed a microsatellite instability test to find Lynch syndrome in people with colon cancer. MSI testing helps identify which cancers are most likely to be caused by Lynch syndrome. PublicationsSee a list of publications about Lynch syndrome by Mayo Clinic doctors on PubMed, a service of the National Library of Medicine. Research Profiles Edit search filters close Narrow your search By location Arizona Florida Minnesota View all View all physicians • Arizona Brady, Justin T. M.D. Arizona Lindor, Noralane M. M.D. Arizona Samadder, Jewel J. M.D. Arizona By Mayo Clinic Staff Lynch syndrome care at Mayo Clinic Request an appointment Diagnosis & treatmentCare at Mayo Clinic Dec. 02, 2025 Print Living with lynch syndrome? Connect with others like you for support and answers to your questions in the Colorectal Cancer support group on Mayo Clinic Connect, a patient community. Colorectal Cancer Discussions What is a good diet after colon surgery? Are probiotics good? 34 Replies Sat, Jul 11, 2026 chevron-right After colon resection: What helps with severe gas? 46 Replies Wed, Jul 01, 2026 chevron-right Anyone have a positive Cologuard test? 306 Replies Tue, Jun 23, 2026 chevron-right See more discussions Related Lynch Syndrome Associated Procedures Colectomy Genetic testing Neurological examinations Oophorectomy (ovary removal surgery) Show more associated procedures Products & Services A Book: Mayo Clinic on Digestive Health Mayo Clinic in Rochester, Minnesota, has been recognized as the best Gastroenterology & GI Surgery hospital in the nation by U.S. News & World Report. Learn more about this top honor Lynch syndromeSymptoms&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-20374694 Diseases & Conditions Lynch syndrome