- Substance abuse treatment facilities provide individual and group therapy for alcoholics and abusers of other chemical substances. Some facilities are hospital based. They are units of or are affiliated with a private or public general hospital or psychiatric hospital. Additionally, specialty hospitals also exist for substance abuse treatment only. Other facilities are freestanding and may be part of a chain or affiliated with a mental health center or health maintenance organization. Whatever the case may be, Colonial General is sure to have the coverage you need for substance abuse treatment facilities.