I live in Tennessee but I received a call from this number.  No message was left.

ValueOptions North Carolina Service Center (NCSC) is part of the Mental Health and Substance Abuse service systems in North carolina since 1992.
ValueOptions entered into an agreement with North carolina Division of Medical assistance (2002) to provide services for over 1.3 million of the State's Medicaid Recipients.
If you are a Medicail Agency, a call from ValueOptions is most probably legit.

ValueOptions
3800 Paramount Pkwy  #300
Morrisville, NC  27560-6950

Answering machine got the call. they hung up leaving no message