Health Services


Welcome to Mike O'Callaghan Military Medical Center! Below you will find helpful websites to assist you in navigating your TRICARE benefits.

TRICARE West/Health Net Federal Services

The TRICARE West website allows you to:

  • Update or transfer enrollments
  • View and print out authorization letters
  • View your claims and Explanation of Benefits
  • Search benefit information
  • Look up costs and fees
  • Locate network providers
  • And much more!
TRICARE West can also be reached by phone at 844-866-WEST (9378).


Keep your information up-to-date in DEERS.

MHS GENESIS Patient Portal

You can log on to the MHS GENESIS Patient Portal to:


Vision coverage options for eligible members can be found at:
Information about the TRICARE Dental Program for Active Duty, National Guard, and Reserve beneficiaries can be found at: You may also call 844-653-4061.

TRICARE Operations Flight

Contact us at 702-653-2129 for information about:

  • Patient Travel
  • TRICARE Plus
  • TRICARE Benefit information

Contact Us


Service Center
844-866-WEST (9378)
Health Benefits Advisor


Mondays, Tuesdays, Thursdays, Fridays, 7:30 a.m. to 4:30 p.m.
Wednesdays, 9:30 a.m. to 4:30 p.m.
Scheduled Closures


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

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Need to Update Your Information in DEERS? Click Here