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.
- U.S. Patients
- International Patients
8 a.m. to 5 p.m. Mountain Standard Time, Monday through Friday
8 a.m. to 5 p.m. Eastern time, Monday through Friday
7 a.m. to 6 p.m. Central time, Monday through Friday
Please refer to the international appointment section to request appointments via phone.
Below are some helpful Internet resources on primary immunodeficiency. Mayo Clinic does not own or control any of these sites and is not responsible for their content. Inclusion of these sites does not imply endorsement by Mayo Clinic.
The Jeffrey Modell Foundation
Immune Deficiency Foundation
Becoming a Patient
See information on patient services at the three Mayo Clinic locations, including transportation options and lodging.