NX Level, Wauwatosa Fitness Center, Wauwatosa 8700 W. Watertown Plank Road Milwaukee, WI 53226 43.0458305, -88.0218594 Get directions Main Number: 414-805-7114 Hours of Operation NX Level Sports Performance Hours are by appointment only. Please call to make an appointment. Services at This Location NX Level Sports Performance Training Blood Flow Restriction Training Golf Performance Nutrition Evaluation for Athletes Runners' Clinic Our NX Level locations are open by appointment only. We have safety precautions in place, and we will provide them to each individual. Please call to make an appointment. Share This: