Health Services

Allergy and Immunizations

Services Provided

The Mike O’Callaghan Military Medical Center Immunizations Clinic currently serves the following:

  • Active duty service members
    • Beneficiaries ages 0 to 17 years of age
  • Contractors working at the Child Development Center
  • Beneficiaries pending accession into the Department of Defense
  • Pregnant patients at 27 weeks gestation or later needing Tdap
  • International travelers with a prescription from a licensed provider for needed travel vaccinations
  • Patients of the Hematology/Oncology clinics for routine, age-based vaccines
  • All beneficiaries with a prescription from a licensed provider for non-age-based vaccines

For all other beneficiaries, please visit to get your age-appropriate vaccines for free at a TRICARE-authorized network pharmacy.

Important Information

Tuberculosis (TB) Testing

Quantiferon-TB blood testing (preferred) and PPD testing is available to all beneficiaries. Quantiferon-TB blood tests may be ordered by the Immunizations Clinic upon request. Blood is drawn for this test by the Laboratory Monday through Thursday before 3:00 p.m.

PPD tests must be read in the Immunizations Clinic within 48-72 hours after placement. PPD tests are placed on Mondays, Tuesdays, Wednesdays, and Fridays.

Updating Records

If you or your beneficiaries received a vaccine off-base, you may update your records by sending a scanned copy of any vaccine administered off base to the “Nellis Immunizations Clinic” mailbox in the MHS GENESIS Patient Portal. Scanned copies must include:

  • Patient name
  • Patient date of birth
  • Vaccine(s) given with lot numbers

Contact Us




Clinic Hours
7:30 a.m. to 4:30 p.m.

Walk-in Vaccine Administration for Active-Duty Service Members
7:30 a.m. to 12:00 p.m.
1:00 p.m. to 4:00 p.m.*

*Vaccine check-ins after 2:30 p.m. are not guaranteed same-day service


4700 Las Vegas Blvd. North
Building 1300, First Floor
Nellis Air Force Base, Nevada 89191


Patient Portal

Send a message to “Nellis Immunizations Clinic”

Connect with us on Facebook
Don't forget to keep your family's information up-to-date in DEERS.