Doctors 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. Find doctors and medical staff: edit search filters Close Narrow your search By location 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 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 Find a doctor 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 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 Find a doctor whose last name begins with the letter R R 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 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 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 Displaying 1-4 out of 4 doctors available Last Name Initial: O John (Jack) C. O'Horo, M.D., M.P.H. Critical Care Specialist Internist Infectious Disease Specialist Rochester, MN Areas of focus: Intensive care, Infection control, Infection, General infectious diseases, Sepsis Richard A. Oeckler, M.D., Ph.D. Critical Care Specialist Pulmonologist Rochester, MN Areas of focus: Mechanical ventilation, Intensive care, Lung cancer, ARDS James A. Onigkeit, M.D. Anesthesiologist Rochester, MN Areas of focus: Intensive care, CPR first aid Yves Ouellette, M.D., Ph.D. Pediatric Critical Care Specialist Pediatrician Rochester, MN Areas of focus: Sepsis Request an Appointment at Mayo Clinic Conditions treatedDoctors by location and specialty April 30, 2021 Share on: FacebookTwitter Critical CareSectionsRequest an appointmentOverviewTests & proceduresConditions treatedDoctorsDoctors by location and specialtyClinical trialsResearchThe Mayo Clinic experience & patient storiesNews from Mayo ClinicContact usResources for medical professionals SectionsRequest an appointmentOverviewTests & proceduresConditions treatedDoctorsDoctors by location and specialtyClinical trialsResearchThe Mayo Clinic experience & patient storiesNews from Mayo ClinicContact usResources for medical professionals ORG-20399494 Departments & Centers Medical Departments & Centers Critical Care