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 Gastroenterology and Hepatology Infectious Diseases 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 There are no doctors whose last name begins with the letter C C There are no doctors 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 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 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 active 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 There are no doctors whose last name begins with the letter R R There are no doctors 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 Find a doctor whose last name begins with the letter V V There are no doctors 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: O Robert Orenstein, D.O. Infectious Disease Specialist Phoenix, AZ Areas of focus: Valley fever, C. difficile infection, HIV/AIDS, General infectious diseases, Transplant-associated infection, Travel-re...lated infectious disease Show more areas of focus for Robert Orenstein, D.O. ResearchMayo Clinic researchers are involved in studies evaluating the epidemiology, risk factors and treatment of C. difficile infection. Studies are ongoing to characterize the fecal microbial composition in the colon to develop tools that can predict response to treatment and the risk of recurrent infection. The Division of Gastroenterology and Hepatology at Mayo Clinic has clinics dedicated to researching and treating C. difficile infection, including studies of the gut microflora and new therapies for C. difficile infection. The Microbiome Program at Mayo Clinic is studying how natural variation in individual gut microbiomes relates to clinical risk factors and susceptibility to C. difficile infection. PublicationsSee a list of publications about C. difficile infection 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 Kashyap, Purna C. M.B.B.S. Minnesota Khanna, Sahil M.B.B.S., M.S. Minnesota Orenstein, Robert D.O. Arizona Pardi, Darrell S. M.D. Minnesota By Mayo Clinic Staff C. difficile infection care at Mayo Clinic Request an appointment Diagnosis & treatmentCare at Mayo Clinic Sept. 01, 2023 Print Related Fecal transplant treatment of C. difficile at Mayo Clinic Mayo Clinic study reporting increased incidence of C. difficile infection Associated Procedures CT scan Flexible sigmoidoscopy Products & Services A Book: Mayo Clinic Family Health Book Newsletter: Mayo Clinic Health Letter — Digital Edition Show more products and services from Mayo Clinic Mayo Clinic in Rochester, Minnesota, has been recognized as the best Gastroenterology & GI Surgery hospital in the nation for 2024-2025 by U.S. News & World Report. Learn more about this top honor C. difficile infectionSymptoms&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-20164011 Patient Care & Health Information Diseases & Conditions C. difficile infection