You should pick the taxonomy code that best describes your program. I see other wilderness programs using taxonomy code 322D00000X - RESIDENTIAL TREATMENT FACILITY, EMOTIONALLY DISTURBED CHILDREN . You are a residential treatment facility, you may not have a license, but you are a residential treatment facility. The insurance carriers need to determine if they will or will not cover you. You aren't doing anything deceitful by having an NPI that identifies you as a residential treatment facility.