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 Colon and Rectal Surgery Early-Onset and Hereditary GI Cancers Program Early-Onset Colorectal Cancer Group Gastroenterology and Hepatology Laboratory Medicine and Pathology Oncology (Medical) Palliative Care in Minnesota Pediatric Hematology/Oncology Proton Beam Therapy Program Radiation Oncology Rectal cancer multidisciplinary clinics in Arizona and Minnesota Doctors who treat this condition Edit search filters close Narrow your search By location Phoenix/Scottsdale, AZ 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 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 There are no doctors 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 There are no doctors whose last name begins with the letter Q Q active 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 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 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 1-1 out of 1 doctors available Last Name Initial: R William G. Rule, M.D. Radiation Oncologist Phoenix, AZ Areas of focus: Radiation therapy, Proton therapy, Stereotactic body radiotherapy, Intraoperative radiation therapy, Intensity-modulate...d radiation therapy, Colon cancer, Liver cancer, Pancreatic cancer, Neuroendocrine tumor, Multiple myeloma, Rectal cancer, Stomach cancer, Cholangiocarcinoma, Esophageal cancer, Leukemia, Lymphoma, Primary mediastinal large B-cell lymphoma, Anal cancer, Pancreatic neuroendocrine tumor, Small bowel cancer Show more areas of focus for William G. Rule, M.D. ResearchMayo Clinic doctors and scientists are studying new ways to diagnose and treat rectal cancer. Learn more about gastrointestinal cancer research. Cancer research is conducted in coordination with Mayo Clinic Comprehensive Cancer Center. Mayo Clinic Comprehensive Cancer Center receives funding from the U.S. 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. PublicationsSee a list of publications about rectal cancer 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 • All Locations Bekaii-Saab, Tanios S. M.D. Arizona Boardman, Lisa A. M.D. Minnesota Dozois, Eric J. M.D. Minnesota Etzioni, David A. M.D. Arizona Haddock, Michael G. M.D. Minnesota Hallemeier, Chris L. M.D. Minnesota Larson, David W. M.D., M.B.A. Minnesota Lindor, Noralane M. M.D. Arizona Samadder, Niloy Jewel M.D. Arizona Wallace, Michael B. M.D. Florida Young-Fadok, Tonia M. M.D. Arizona By Mayo Clinic Staff Rectal cancer care at Mayo Clinic Request an appointment Survival ratesCare at Mayo Clinic Sept. 12, 2025 Print Living with rectal cancer? 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 How do I eat after digestive tract surgery? 221 Replies Sat, May 23, 2026 chevron-right Problems months after colon resection surgery: What Helps? 547 Replies Sat, May 16, 2026 chevron-right After colon resection: What helps with severe gas? 42 Replies Sun, May 10, 2026 chevron-right See more discussions Related Rectal cancer Associated Procedures Biological therapy for cancer Brachytherapy Cancer treatment Chemotherapy Colonoscopy Colostomy: Surgery, Bags and Stoma Care Complete blood count (CBC) CT scan Flexible sigmoidoscopy Hyperthermic intraperitoneal chemotherapy (HIPEC) Ileoanal anastomosis (J-pouch) surgery Ileostomy Minimally invasive surgery MRI Palliative care Radiation therapy Rectal cancer surgery Show more associated procedures Products & Services A Book: Mayo Clinic on Digestive Health Assortment of Health Products from Mayo Clinic Store Show more products and services from Mayo Clinic Rectal cancerSymptoms&causesDiagnosis&treatmentStagesSurvivalratesDoctors&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-20306109 Diseases & Conditions Rectal cancer