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 Phoenix/Scottsdale, AZ Rochester, MN Jacksonville, FL 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 active 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 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 1-5 out of 5 doctors available Last Name Initial: J Arun L. Jayaraman, M.D., Ph.D. Echocardiographer Anesthesiologist Phoenix, AZ Jeffrey B. Jensen, M.D. Anesthesiologist Rochester, MN Areas of focus: Emergency care, Intensive care, Hospitalization, General anesthesia administration Daniel J. Johnson, M.D. Surgeon General Surgeon Phoenix, AZ Areas of focus: Trauma care, Emergency care, Intensive care, Nutrition (Healthy eating) Margaret M. Johnson, M.D. Critical Care Specialist Pulmonologist Jacksonville, FL Areas of focus: Pulmonary embolism, Lung cancer, Nontuberculous mycobacteria lung disease, Asthma attack, Bronchiectasis Robert V. Johnson, M.D. Neonatologist Pediatrician Rochester, MN Request an Appointment at Mayo Clinic Conditions treatedDoctors by location and specialty Aug. 26, 2020 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