Attention! If you live in the TRICARE West Region, or in a state or ZIP code moving to the West Region and you pay an enrollment fee or premium by recurring credit card, debit card, or electronic funds transfer, you must set up payment information with TriWest before Dec. 31, 2024. If you don’t take action, you’ll risk getting disenrolled. Learn more.

About Us

Image of Nellis Air Force Base

About Us

Mission: Ready medics, fueling ready forces, anytime, anywhere!
Vision: MHS' premier readiness, operational, and training platform...delivering reliable care worldwide!

Mike O'Callaghan Military Medical Center is comprised of approximately 1,400 personnel who are dedicated to providing preventive, emergency and acute care services for approximately 22,000 active duty personnel and their dependents.

Health care services are also provided directly or coordinated for more 40,000 retirees and other eligible beneficiaries on a space-available basis.


 
Don't forget to keep your family's information updated in DEERS!