Menu: Home Find a Provider Services Adult Children Locations Johnson City Kingsport Bristol Elizabethton Mountain City SneedvilleGreeneville Patients & Visitors About Contact FAQ Health Insurance Medical Records Paying for Care Health Blog MyChart Find a Geneticist Genetic Evaluations and Consultations for Adults and Children Serrano, Alvaro , M.D. Genetics Carver, Jennifer L., N.P. Genetics Yoon, Stefanie P., Genetics