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 Phoenix/Scottsdale, AZ By last name Find a doctor whose last name begins with the letter A A There are no doctors whose last name begins with the letter B B There are no doctors whose last name begins with the letter C C active Find a doctor whose last name begins with the letter D D There are no doctors whose last name begins with the letter E E Find a doctor whose last name begins with the letter F F There are no doctors 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 There are no doctors whose last name begins with the letter J J There are no doctors 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 There are no doctors whose last name begins with the letter O O There are no doctors 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 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 1-1 out of 1 doctors available Last Name Initial: D John H. Demenkoff, M.D. Internist Pulmonologist Phoenix, AZ Frequently asked questionsCosts & insurance March 14, 2024 Share on: FacebookTwitter Mayo Clinic Medallion ProgramSectionsOverviewFrequently asked questionsDoctorsCosts & insurance SectionsOverviewDoctorsCosts & insurance ORG-20462966 Medical Departments & Centers Mayo Clinic Medallion Program Don’t miss your chance! Give NowGive by Dec. 3 to double your impact. Give Now