Excelsior Location Minnesota Dermatology, Excelsior, is located in the South Lake Professional Building in Excelsior on the north side of town. From 494, exit at highway 7 or exit number 16 and go West on 7 for a 6.3 miles. Turn right onto Oak St./Country Rd 19 and travel another 1/2 miles, where it turns into Smithtown Rd and as you veer left. Just after The Garden Patch, take a left into the parking lot. We are suite number 120, which has its own entrance. If you get lost, you can always call us at 612.486.4200 and we will guide you in.