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 Bariatric Center in Jacksonville Bariatric Surgery Program in Rochester Endocrine Surgery in Rochester Endocrinology Gastroenterology and Hepatology General Surgery in Phoenix Doctors who treat this condition Edit search filters close Narrow your search By location Phoenix/Scottsdale, AZ Rochester, MN 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 active 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 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 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 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 1-3 out of 3 doctors available Last Name Initial: D Eleanna O. De Filippis, M.D., Ph.D. Internist Endocrinologist Phoenix, AZ Areas of focus: Osteoporosis, Obesity, Diabetes, Thyroid disease, Adrenal insufficiency, Pituitary disorder Nathan L. Delafield, M.D. Internist Phoenix, AZ Areas of focus: Joint injection, Obesity, High blood pressure, Type 2 diabetes Ty S. Diwan, M.D. Transplant Surgeon Rochester, MN Areas of focus: Liver transplant, Kidney transplant, Donor nephrectomy, Pancreas transplant, Bariatric surgery, Obesity, Diabetes, Cirr...hosis, Kidney failure Show more areas of focus for Ty S. Diwan, M.D. Research Profiles Edit search filters close Narrow your search By location Arizona Florida Minnesota View all View all physicians • All Locations Bailey, Kent R. Ph.D. Minnesota De Filippis, Eleanna O. M.D., Ph.D. Arizona Edwards, Michael A. M.D. Florida Madura, James A. II M.D. Arizona Rajan, Elizabeth M.D. Minnesota By Mayo Clinic Staff Obesity care at Mayo Clinic Request an appointment Diagnosis & treatmentCare at Mayo Clinic Dec. 02, 2025 Print Living with obesity? Connect with others like you for support and answers to your questions in the Bariatric Surgery & Weight Loss support group on Mayo Clinic Connect, a patient community. Bariatric Surgery & Weight Loss Discussions Will Gastric Bypass “fix” gastroparesis symptoms? 12 Replies Thu, Jan 22, 2026 chevron-right Anyone have roux en y (RNY) for GERD (reflux) only? not obesity 8 Replies Wed, Jan 21, 2026 chevron-right Suggestion for a liquid diet due to Bariatric surgery? 6 Replies Wed, Jan 21, 2026 chevron-right See more discussions Related BMI and waist circumference calculator What is insulin resistance? A Mayo Clinic expert explains Associated Procedures Bariatric surgery Biliopancreatic diversion with duodenal switch (BPD/DS) Cholesterol test Gastric bypass (Roux-en-Y) Intragastric balloon Liver function tests Minimally invasive surgery Sleeve gastrectomy Show more associated procedures News from Mayo Clinic Mayo Clinic Q & A: Supporting weight-loss medications with adequate, tailored nutrition Mayo Clinic Minute: Health consequences of obesity Mayo Clinic Minute: Can injectable weight-loss drugs improve heart health? Mayo Clinic Q and A: Weight loss and genetics Study finds long-term health benefits from bariatric surgery and liver transplant Genetic test predicts response to weight-loss drugs Show more news from Mayo Clinic Products & Services A Book: The Mayo Clinic Diet Bundle LISTEN: Obesity and medical weight bias Show more products and services from Mayo Clinic ObesitySymptoms&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-20375722 Diseases & Conditions Obesity