MedMark Treatment Centers Dayton is an addiction treatment center located at 4201 N Main St, Dayton, OH 45405. We offer comprehensive support for individuals seeking recovery in a caring environment. Our hours of operation are Tuesday through Friday from 5:30 AM to 12 PM, Saturday from 6 AM to 9 AM, and we are closed on Sundays. For more information, please visit our website at medmark.com or call us at +19379984300.