Print Departments and specialties 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. Departments that treat this condition Endocrinology By Mayo Clinic Staff Diagnosis & treatment March 03, 2018 Print Share on: FacebookTwitter RelatedThyroid peroxidase antibody test: What is it?Leg swellingFatigue Hashimoto's diseaseSymptoms & causesDiagnosis & treatmentDoctors & departments Research: It's All About Patients CON-20164034 Patient Care & Health Information Diseases & Conditions Hashimoto's disease