Regional OMHSAS Contacts | Department of Human Services | Commonwealth of Pennsylvania ​Regional Mental Health/Substance Abuse Field Offices Central Field Office: 717-705-8395 717-705-8386 (fax) Northeast Field Office: 570-963-4335 570-963-3050 (fax) Southeast Field Office: 610-313-5844 610-313-5845 (fax) Southwest Field Office: 412-565-5226 412-565-5393 (fax)