Mark Vossler , MD Emergency Medicine Dr. Vossler is Board Certified in Internal Medicine. He completed his internal medicine residency at Royal C. Johnson Veterans Memorial Medical Center in Sioux Falls, SD. Dr. Vossler completed medical school at the University of South Dakota Sanford School of Medicine and earned a Bachelor of Science degree from South Dakota State University. Prairie Lakes Hospital 401 9th Avenue Northwest Watertown, SD 57201 605-882-7000 « back to directory P:605.882.7000 | 877.917.PLHS (7547) | info@prairielakes.com 401 9th Ave. NW Watertown, SD 57201 Privacy Policy