| APT Foundation Inc, Access and Treatment Services | New Haven | Intensive outpatient, Regular outpatient | Yes |
| Connecticut Counseling Centers Inc, Danbury Clinic | Danbury | Intensive outpatient, Regular outpatient | Yes |
| Connecticut Counseling Centers Inc, Meriden Clinic | Meriden | Intensive outpatient, Regular outpatient | Yes |
| Connecticut Counseling Centers Inc, Norwalk Clinic | Norwalk | Intensive outpatient, Regular outpatient | Yes |
| Connecticut Counseling Centers Inc | Waterbury | Intensive outpatient, Regular outpatient | Yes |
| Connecticut Valley Hospital, Blue Hills Substance Services | Hartford | Hospital inpatient | Yes |
| Connecticut Valley Hospital, Addiction Services Division | Middletown | Hospital inpatient | Yes |
| Cornell Scott Hill Health Center, Ansonia Behavioral Health | Ansonia | Regular outpatient | Yes |
| Cornell Scott Hill Health Center, South Central Rehabilitation Center | New Haven | Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | Hartford | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | Manchester | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | Middletown | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | New Britain | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | New London | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | Torrington | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | Willimantic | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Liberation Programs Inc, Pelletier Wellness Center | Bridgeport | Intensive outpatient, Regular outpatient | Yes |
| Liberation Programs Inc | Stamford | Intensive outpatient, Regular outpatient | Yes |
| MCCA Inc, ASAM 3 7 Withdrawal Management | Danbury | Not listed | Yes |
| Mountainside Treatment Center | Canaan | Short-term residential, Partial hospitalization, Intensive outpatient, Regular outpatient, Transitional housing | Not listed |
| Recovery Network of Programs Inc, Kinsella Treatment Center MATS | Bridgeport | Intensive outpatient, Regular outpatient | Yes |
| Recovery Network of Programs Inc, Center for Human Services | Stratford | Regular outpatient | Yes |
| Adult Psychiatric Clinic, Cornell Scott Hill Health Center | New Haven | Regular outpatient | Yes |
| Bridges Healthcare Inc | Milford | Intensive outpatient, Regular outpatient | Yes |
| Chemical Abuse Services Agency Inc, CASA/IOP | Bridgeport | Intensive outpatient, Regular outpatient | Yes |
| CJR Waterbury | Waterbury | Regular outpatient | Yes |
| Community Health Resources, Danielson Clinic | Danielson | Intensive outpatient, Regular outpatient | Yes |
| Community Health Resources, Manchester Clinic | Manchester | Intensive outpatient, Regular outpatient | Yes |
| Community Mental Health Affiliates, Adult Behavioral Health Clinic | New Britain | Regular outpatient | Yes |
| Connecticut Renaissance Inc, Behavioral Health OP Clinic | Norwalk | Intensive outpatient, Regular outpatient | Yes |
| Connection Center for Behavioral, Health | Norwich | Intensive outpatient, Regular outpatient | Yes |
| Cornell Scott Hill Health Center, Dixwell Behavioral Health Services | New Haven | Regular outpatient | Yes |
| Cornell Scott Hill Health Center, Recovery and Wellness Center | New Haven | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Fair Haven Community Healthcare | New Haven | Regular outpatient | Yes |
| Farrell Treatment Center | New Britain | Short-term residential, Intensive outpatient, Regular outpatient | Yes |
| Gilead Community Services Inc, Middletown Outpatient Clinic | Middletown | Intensive outpatient, Regular outpatient | Yes |
| Hartford Dispensary, Root Center for Advanced Recovery | Middletown | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Hockanum Valley Community Council Inc | Vernon Rockville | Regular outpatient | Yes |
| InterCommunity Healthcare | East Hartford | Intensive outpatient, Regular outpatient | Yes |
| InterCommunity Inc | Hartford | Intensive outpatient, Regular outpatient | Yes |
| MCCA | Bridgeport | Intensive outpatient, Regular outpatient | Yes |
| MCCA, Derby Outpatient | Derby | Intensive outpatient, Regular outpatient | Yes |
| McCall Behavioral Health Network, Travisano Outpatient Clinic | Danbury | Intensive outpatient, Regular outpatient | Yes |
| McCall Behavioral Health Network, Outpatient Clinic | Torrington | Intensive outpatient, Regular outpatient | Yes |
| McCall Behavioral Health Network, Renato Outpatient Clinic | Waterbury | Intensive outpatient, Regular outpatient | Yes |
| McCall Behavioral Health Network, Winsted Office | Winsted | Regular outpatient | Yes |
| Mountainside Treatment Center, Outpatient | Wilton | Intensive outpatient, Regular outpatient | Not listed |
| PursueCare Connecticut PC | Middletown | Regular outpatient | Yes |
| Reid | Danbury | Intensive outpatient, Regular outpatient | Yes |
| Reid | Torrington | Intensive outpatient, Regular outpatient | Yes |
| Rushford Center Inc | Meriden | Partial hospitalization, Intensive outpatient, Regular outpatient | Yes |
| Shoreline Family Healthcare | Branford | Regular outpatient | Yes |
| Sound Community Services Inc | New London | Regular outpatient | Yes |
| Southwest Community Health Center | Bridgeport | Intensive outpatient, Regular outpatient | Yes |
| Southwest Connecticut MH Systems | Bridgeport | Regular outpatient | Yes |
| Southwest Connecticut MH Systems | Bridgeport | Regular outpatient, Transitional housing | Yes |
| Southwest CT MH Services System, F S DuBois Center | Stamford | Regular outpatient | Yes |
| State Street Counseling Services, Cornell Scott Hill Health Center | New Haven | Regular outpatient | Yes |
| StayWell Health Center, OASIS | Waterbury | Regular outpatient | Yes |
| Substance Use and Addiction Treatment | New Haven | Regular outpatient | Yes |
| United Community and Family Services, Psychiatric Outpt Clinic for Adults | Colchester | Regular outpatient | Yes |
| United Community and Family Services | Jewett City | Regular outpatient | Yes |
| United Community and Family Services | Moosup | Regular outpatient | Yes |
| United Community and Family Services | New London | Regular outpatient | Yes |
| United Community and Family Services | Norwich | Regular outpatient | Yes |
| United Services Inc | Dayville | Regular outpatient | Yes |
| United Services Inc | Mansfield Center | Regular outpatient | Yes |
| Veterans Affairs, Connecticut Healthcare System | Newington | Intensive outpatient, Regular outpatient | Yes |
| Village for Families and Children, MAT Naltrexone | Hartford | Intensive outpatient, Regular outpatient | Yes |
| Wellmore Inc, Standard Outpatient | Waterbury | Intensive outpatient, Regular outpatient | Yes |
| West Haven Adult Behavioral Health, Cornell Scott Hill Health Center | West Haven | Regular outpatient | Yes |