5 Amik Street, PO Box 81, Constance Lake, Ontario P0L 1B0
Info line for new patients: 1-877-937-2282
French Speaking physician is available.
As part of the Canadian Addiction Treatment Centres clinic network, you can find OATC Constance Lake’s up-to-date hours here.
Calstock is located in northern Ontario, in the township of Studholme in Cochrane District. It is a few kilometres north of Hwy 11, at the northern terminus of Highway 663, just south of the Constance Lake First Nation Reserve and about 30 minutes west of Hearst, Ontario.