3816 N. University Dr., Nacogdoches, Texas. 936-560-2990. Also Sees Patients At: Nacogdoches. Schedule an Appointment. Edwin Ferren, M.D., is a Board-Certified orthopedic surgeon specializing in hand, hip, and knee repairs. After completing his orthopedic residency at The University of Texas Medical Branch in Galveston, Dr. Ferren started his ....