BACK TO PROVIDERS Crystal Doty, F.N.P. Family Nurse Practitioner Family Medicine Education East Tennessee State University Walk-In Clinic (Johnson City) 301 Med Tech ParkwayJohnson City, TN 37604 Open 7 days a week, 7:00am - 9:00pm Call to schedule an appointment or just walk in! Schedule an appointment: (423) 794-5590