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 Early-Onset and Hereditary GI Cancers Program Gastroenterology and Hepatology Gastrointestinal Neoplasia Clinic Hepatobiliary and Pancreas Surgery in Jacksonville Hepatobiliary and Pancreas Surgery in Rochester Laboratory Medicine and Pathology Oncology (Medical) Pediatric Hematology/Oncology Radiation Oncology Surgery Surgical Oncology and Endocrine Surgery in Arizona Thoracic Surgery 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 There are no doctors whose last name begins with the letter E E There are no doctors 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 There are no doctors whose last name begins with the letter J J Find a doctor whose last name begins with the letter K K There are no doctors whose last name begins with the letter L L There are no doctors whose last name begins with the letter M M There are no doctors whose last name begins with the letter N N There are no doctors 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 There are no doctors 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 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 1-1 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, Stage 4 stomach cancer Show more areas of focus for William G. Rule, M.D. ResearchMayo Clinic researchers are studying new ways to diagnose and treat advanced stomach cancer. Research areas include: Targeted treatments. Researchers are studying newer targeted approaches, including antibody-drug conjugates (ADCs), which link an antibody to a cancer-killing medicine. New immune-based treatments. Researchers are studying medicines called bispecific antibodies. These medicines can attach to two different targets at once and may help immune cells recognize and attack stomach cancer cells. Cancer that has spread to the peritoneum. Researchers are studying better ways to prevent and treat stomach cancer that spreads to the peritoneum. Approaches include minimally invasive surgery, chemotherapy delivered directly into the abdomen and immunotherapy. Researchers also are studying how to predict who is most likely to benefit from these treatments. This may help make treatment more personalized. Predicting treatment response. Mayo Clinic researchers are studying tumor tissue and biomarkers to better understand why some cancers respond to treatment and others do not. Mayo Clinic also participates in clinical trials of new treatments for advanced and metastatic stomach cancer. PublicationsSee a list of publications about stomach 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 Grotz, Travis E. M.D., M.S. Minnesota Que, Florencia G. M.D. Minnesota Truty, Mark J. M.D., M.S. Minnesota Yoon, Harry H. M.D. Minnesota By Mayo Clinic Staff Request an appointment Survival rates Sept. 09, 2026 Print Related Associated Procedures Biological therapy for cancer Cancer treatment Chemotherapy CT scan Endoscopic ultrasound Genetic testing Hyperthermic intraperitoneal chemotherapy (HIPEC) Palliative care Positron emission tomography (PET) scan Radiation therapy Upper endoscopy Show more associated procedures Stage 4 (metastatic) stomach cancerSymptoms&causesDiagnosis&treatmentSurvivalratesDoctors&departments 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-20607125 Diseases & Conditions Stage 4 (metastatic) stomach cancer