Health Net Federal Services LLC, Rancho Cordova, California, is awarded a $104,419,360 modification to a previously awarded fixed-price T2017 West Managed Care Service Contract (HT9402-16-C-0002). This modification implements changes to the Military Health System required by the National Defense Authorization Act 2017, Section 701, TRICARE Select. Specifically, TRICARE Select replaced TRICARE Extra and TRICARE Standard health programs. Work will be performed throughout the western region of the continental U.S. at military service component sites, contractor call center, and within an integrated healthcare provider network, with a period of performance of Jan. 1, 2017, to Dec. 31, 2022. Fiscal 2018, 2019, 2020, and 2021 operation and maintenance funds are being obligated at the time of award. The Defense Health Agency, Falls Church, Virginia, is the contracting activity.