Request an appointment By Mayo Clinic Staff Print Mayo Clinic works with hundreds of insurance companies and is an in-network provider for millions of people. In most cases, Mayo Clinic doesn't require a physician referral. Some insurers require referrals or may have additional requirements for certain medical care. All appointments are prioritized on the basis of medical need. Learn more about appointments at Mayo Clinic. Please contact your insurance company to verify medical coverage and to obtain any needed authorization prior to your visit. Often, your insurer's customer service number is printed on the back of your insurance card. Appointments can often be arranged quickly — sometimes within two business days. To request an appointment with a brain tumor specialist, please call 507-284-2193 (Minnesota), 904-953-0818 (Florida) or 480-301-4193 (Arizona). U.S. patients Online requests Request an appointment at Mayo Clinic Telephone requests Mayo Clinic's campus in Phoenix/Scottsdale, Arizona Central Appointment Office 480-301-8484 8 a.m. to 5 p.m. Mountain time Monday through Friday Mayo Clinic's campus in Jacksonville, Florida Central Appointment Office 904-953-0853 8 a.m. to 5 p.m. Eastern time Monday through Friday Mayo Clinic's campus in Rochester, Minnesota Central Appointment Office 507-538-3270 7 a.m. to 6 p.m. Central time Monday through Friday Mayo Clinic Children's Center Central Appointment Office (Minnesota) 855-MAYO-KID (855-629-6543, toll-free) 7 a.m. to 6 p.m. Central time Monday through Friday International patients International patients can request an appointment at any Mayo Clinic location. Appointment requests for international patients CON-20118239 Diseases & Conditions Oligodendroglioma