
Rimrock Foundation
1231 North 29th Street
Billings, MT 59101
T: (406) 248-3175
or (800) 227-3953 (USA & Canada)
F: (406) 248-3821
![]()
Chief Executive Officer: David Cunningham
Chief Operations Officer/Clinical Director: Mona Sumner
Director of Administrative Services: Tammy Wood
Inpatient Supervisor: Malcolm Horn
Clinical Services Supervisor: Coralee Goni
Admissions Supervisor: Jamie Hixson
Business Office: Shirley Ehlang
Library & Publications: Hugh M. Kilbourne
![]()
Or fill out our Request for Information form