99th MDG beneficiaries may see change of PCM due to optimization Published Feb. 9, 2015 By 99th Medical Group NELLIS AIR FORCE BASE, Nev. -- The 99th Medical Group at the Mike O'Callaghan Federal Medical Center is adapting to changes in the Primary Care Manager staff while simultaneously increasing enrollment in the Internal Medicine clinic, which could cause beneficiaries to see a change of their PCM as a result. Additionally, the Flight Medicine Clinic has transformed into a more comprehensive model known as a Patient Centered Medical Home. The 99th MDG will be opening a limited number of spaces for spouses of members already enrolled in the clinic over the coming months. These transformations and adjustments will help enable the 99th MDG to become the premier medical center for Nellis AFB-area beneficiaries, delivering healthcare with compassion, trust and excellence. If interested in transferring to the Patient Centered Medical Home, please contact the TRICARE Service Desk located on the first floor of the medical center, or call 702-653-2144/2129. Beneficiaries can also visit the Flight Medicine Clinic front desk, or call 702-653-2766.