 CHARLOTTE, N.C.--BUSINESS WIRE--- PINC--Health Resource Services HRS, a national, provider-owned group purchasing organization GPO founded by Virginia Mason Health System, today announced that they will partner with Premier Inc. NASDAQ: PINC, a leading healthcare improvement company, for national contracting support, effective immediately. Making a change in our national contracting partner was a big decision for us, based on a thorough search of all the major GPOs, said HRS President Ken Fre 