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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.

Big changes are coming with the new TRICARE West Region contract.

For beneficiaries in the TRICARE West Region, TriWest Healthcare Alliance Corporation will be your new regional contractor beginning Jan 1, 2025.

Learn more about the changes and the actions you need to take by December 31, 2024.

TRICARE West Region Changes

Big changes are coming with the new TRICARE West Region contract. For beneficiaries in the TRICARE West Region, TriWest Healthcare Alliance Corporation will be your new regional contractor beginning Jan 1, 2025. Learn more about the changes and the actions you need to take by December 31, 2024.

Jet and Ambulance

Level III Trauma Center

Our level III trauma center is the first Air Force medical facility to treat civilian critical care and trauma patients arriving by ambulance.

Mike O'Callaghan Military Medical Center is committed to providing all of our patients with high-quality care.

Our Mission. Your [quality] Care.

Mike O'Callaghan Military Medical Center is committed to providing all of our patients with high-quality care.

Want another way to connect with your Military Treatment Facility? Connect with us on Facebook! We welcome you to join our social community where we share important information and updates.

Connect with us on Facebook

Want another way to connect with your Military Treatment Facility? Connect with us on Facebook! We welcome you to join our social community where we share important information and updates.

The Defense Health Agency’s Virtual Education Center is an online educational platform with more than 50,000 resources covering 60 medical topics. The Virtual Education Center puts the power in your hands to research health topics before you talk to your provider.

Visit our new Virtual Education Center!

The Defense Health Agency’s Virtual Education Center is an online educational platform with more than 50,000 resources covering 60 medical topics. The Virtual Education Center puts the power in your hands to research health topics before you talk to your provider.

Quality and Safety Reports

Quality and Safety

Make an Appointment

Make an Appointment

Connect with a Patient Advocate

Connect with a Patient Advocate
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Mike O'Callaghan Military Medical Center News and Updates

Nurse standing in trauma room

Air Force nurse puts trauma experience to test in new role

Trauma nurse Capt. Angela Leonardo thrives on the chaos of the emergency room. As the Air Force’s only trauma center, Mike O’Callaghan Military Medical Center (MOMMC) offers Air Force medics like Leonardo valuable life-saving opportunities while also providing the Las Vegas community with additional access to emergency care.

Surgeon standing in operating room

Team Captain: Nellis Chief of Surgery Leverages Sports Background to Lead Surgical Cadre

As a former defensive end for the Air Force Academy Football Team, Maj. (Dr.) Fortune Egbulefu has a special interest in orthopedic medicine. Now an orthopedic surgeon and Mike O’Callaghan Military Medical Center’s Chief of Surgery, Egbulefu provides leadership to MOMMC’s surgical staff and state-of-the-art care to beneficiaries and veterans.

U.S. Air Force Col. Roy Louque, 99th Inpatient Surgical Squadron’s master clinician, right, speaks to Currency Training Program (CTP) participants at Nellis Air Force Base, Nevada, Aug. 24, 2023. The 99th MDG’s CTP provides U.S. Air Force medical personnel with the training and skill set needed for adequate and efficient care down range.

99th MDG: Preparing Air Force medical Airmen for evolving demands

The Mike O’Callaghan Military Medical Center hosted medical professionals from Luke Air Force Base

Image of two Airmen treating a patient.

Air Force SMART program sustains readiness and currency through tailored training

The Air Force’s Sustained Medical and Readiness Trained, or SMART, program has become a dynamic training platform. Through tailored training and multidisciplinary opportunities, Air Force medics retain their currency and are ready for the fight.

TRICARE News and Updates

Doctor uses a tablet.

Check the TRICARE Network Provider Directories Ahead of 2025

If you get care outside of a military hospital or clinic, it’s important to understand your civilian provider options. TRICARE’s new regional contracts, which begin Jan. 1, 2025, will affect the TRICARE provider networks in the U.S. You’re now able to check the network provider directories for both the East Region and West Region.

Auditorium full of uniformed service members.

Graduate Medical Education Selection Board Strengthens Military Medical Workforce

More than 500 healthcare leaders from around the Military Health System worldwide conducted the annual Joint Graduate Medical Education Selection Board at the Uniformed Services University from Nov. 18 to Nov. 22 to determine the future career paths of medical students and physicians applying for advanced training.

Image of person holding cellphone and looking at calendar app. Text reads "TRICARE Open Season 2024: Open Season Ends Soon! Nov. 11 - Dec. 10"

TRICARE Open Season Ends Dec. 10: Your Last Chance To Update Health Coverage for 2025

Time is running out to review and update your TRICARE health plan for 2025. TRICARE Open Season ends Tuesday, Dec. 10, marking your last day to enroll in a new plan or make changes to your health coverage.

Map highlighting Wisconsin, Missouri, Arkansas, and Indiana. A small portion of Indiana is highlighted in blue (West Region); small portions of Wisconsin, Missouri, and Arkansas are highlighted in green (staying in the East Region).

Reminder: TRICARE Regions Are Changing Jan. 1, 2025

There will be changes to the TRICARE regions in the U.S. on Jan. 1, 2025. While there will still be two TRICARE regions, six states currently in the East Region will move to the West Region. There are also some zip codes in four of these states that will be exceptions to the region changes.

DOD Safe Helpline

DOD Safe Helpline

988 Suicide & Crisis Lifeline

Links to 988 Suicide & Crisis Lifeline

DoD Sexual Assault Prevention and Response Office

DOD Sexual Assault Prevention and Response Office

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