Mackinac Straits Health Systems Mackinaw City Specialty Clinic Providers Todd E. Harburn, D.O. Read More Charlene Sweeney, M.D. Read More Phone: 231-436-5793 Fax: 231-436-5898 Address: (Located inside the Citizens National Bank Building) 580 South Nicolet Mackinaw City, Michigan 49701 Provider Hours: Monday thru Friday by appointment
