Hill Country Digestive Health. Gastroenterology, Nursing (Nurse Practitioner) • 2 Providers. 420 Water St, Kerrville TX, 78028. Make an Appointment. (830) 257-0375. Telehealth services available. Hill Country Digestive Health is a medical group practice located in Kerrville, TX that specializes in Gastroenterology and Nursing (Nurse ....