Dr. Margaret M Coughlan has 3 locations. Margaret M Coughlan Md Pllc 3712 Route 44 Millbrook, NY 12545. (845) 677-6767. ACCEPTING NEW PATIENTS. Crystal Run Healthcare Urgent Care 155 Crystal Run Rd Middletown, NY 10941. (845) 703-6333. ACCEPTING NEW PATIENTS. Monte Marder Md Pc 3712 Route 44 Millbrook, NY 12545. (845) 677-6767..