Margarita Fallena, M.D. Internal Medicine, Rheumatology; Internal Medicine Rheumatology Associates Specialties Internal Medicine Rheumatology Insurance Accepted City of Euless City of Euless (Employee Plan) County of Rockwall County of Rockwall (Employee Plan) UT CONNECT Blue Cross Blue Shield - UT Connect United Healthcare UnitedHealthCare Medicare - AARP MedicareComplete SecureHorizons (HMO) EducationUniversidad de Anahuac, Mexico (2002)ResidencyUT Southwestern Medical School, Internal Medicine (2007)UT Southwestern Medical Center, Internal Medicine (2007)FellowshipUT Southwestern Medical Center, Rheumatology (2009) Rheumatology Associates 8144 Walnut Hill Ln Ste 800 Dallas, TX 75231 (214) 540-0700Directions Rheumatology Associates 1643 Lancaster Dr Ste 202 Grapevine, TX 76051 (214) 570-0700Directions Rheumatology Associates 8144 Walnut Hill Ln Ste 800 Dallas, TX 75231 United States Rheumatology Associates 1643 Lancaster Dr Ste 202 Grapevine, TX 76051 United States