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: Narrow your search By location ArizonaFloridaMinnesotaView all View All • All Locations Ames, Steven C. Ph.D. Florida Croghan, Ivana T. Ph.D. Minnesota Ebbert, Jon O. M.D. Minnesota Hays, J. Taylor M.D. Minnesota McFadden, David D. M.D. Minnesota Request an Appointment at Mayo Clinic Conditions treatedDoctors by specialty June 14, 2019 Share on: FacebookTwitter Nicotine Dependence CenterSectionsRequest an appointmentOverviewTests & proceduresConditions treatedDoctorsDoctors by specialtyLocations, travel & lodgingClinical trialsResearchThe Mayo Clinic experience & patient storiesCosts & insuranceNews from Mayo ClinicResources for physicians SectionsRequest an appointmentOverviewTests & proceduresConditions treatedDoctorsDoctors by specialtyLocations, travel & lodgingClinical trialsResearchThe Mayo Clinic experience & patient storiesCosts & insuranceNews from Mayo ClinicResources for physicians ORG-20457516 Departments & Centers Medical Departments & Centers Nicotine Dependence Center