| Brightshores Health System, Mental Health Services Department - Assertive Community Treatment Team, Owen Sound Hospital | Owen Sound |
| Canadian Mental Health Association, York Region and South Simcoe, CMHA Alliston | New Tecumseth |
| Canadian Mental Health Association. Simcoe County Branch, Barrie - 21 Bradford St, Assertive Community Treatment Team | Barrie |
| Canadian Mental Health Association. Simcoe County Branch, Collingwood - 186 Erie St - Suite 101, Assertive Community Treatment Team | Collingwood |
| Canadian Mental Health Association. Simcoe County Branch, Orillia - 76 Nottawasaga St, Assertive Community Treatment Team | Orillia |
| Huron Perth Healthcare Alliance, Mental Health Services - Huron Perth Assertive Community Treatment Team, Seaforth - 28 Centennial Dr | Huron East |
| Northumberland Hills Hospital, Community Mental Health Services - Northumberland County Assertive Community Treatment Team, Cobourg - Elgin St W | Cobourg |