Mark Miller, M.D. Internal Medicine, Gastroenterology Digestive Health Associates of Texas, PA Specialties Internal Medicine Gastroenterology EducationUniversity of Oklahoma College of Medicine (1989)ResidencyMcGaw Medical Center, Northwestern University, Internal Medicine (1992)FellowshipBaylor University Medical Center of Dallas, Gastroenterology (1994) Digestive Health Associates of Texas, PA 3144 Horizon Rd Ste 210 Rockwall, TX 75032 (972) 771-2222Directions Digestive Health Associates of Texas, PA 3144 Horizon Rd Ste 210 Rockwall, TX 75032 United States