Employment Opportunities. Are you desiring a rewarding Medical Career with one of the region's leading healthcare providers? Positions available include: HR Generalist, Circulator RN, Operating Room Technician, LPN, RMA, CMA, Phlebotomist, MLT, COTA, Financial Counselor, Polysomnography Technician and more. Please visit our website to apply online. www.holstonmedicalgroup.com. Holston Medical Group. Attn.: Human Resources, P.O. Box 1499, Kingsport, TN 37662.