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 Doctor's Name, Condition Or Procedure By location Rochester, MN Phoenix/Scottsdale, AZ 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 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 There are no doctors 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 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 Find a doctor whose last name begins with the letter Z Z By conditions treated No results found By procedures performed No results found By spoken language No results found 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: R Kannan Ramar, M.D., M.B.A. Pulmonologist Critical Care Specialist Sleep Medicine Specialist Rochester, MN Jarrett W. Richardson, III, M.D. Internist Psychiatrist Sleep Medicine Specialist Rochester, MN Areas of focus: Deep brain stimulation, Electroconvulsive therapy, Parkinson's disease, Sleep disorders, Alcohol use disorder, Narcolep...sy Show more areas of focus for Jarrett W. Richardson, III, M.D. Chad M. Ruoff, M.D. Sleep Medicine Specialist Phoenix, AZ Areas of focus: Sleep disorders Request an appointment Tests & proceduresSpecialty groups June 24, 2023 Share on: FacebookTwitter Sleep MedicineSectionsOverviewConditions treatedTests & proceduresDoctorsSpecialty groupsClinical trialsResearchReferrals SectionsRequest an AppointmentOverviewConditions treatedTests & proceduresDoctorsSpecialty groupsClinical trialsResearchReferrals ORG-20407447 Medical Departments & Centers Sleep Medicine We’re transforming healthcare Give TodayMake a gift now and help create new and better solutions for more than 1.3 million patients who turn to Mayo Clinic each year. Give Today