Dr. Mario Roybal
Dr. Mario Joseph Roybal began his dental career with a Bachelor of Arts from the University of Mississippi. He then attended the University of Tennessee College Of Dentistry, where he graduated in 1976. Since graduating, Dr. Roybal served as a dentist in the Air Force and has served his community in Biloxi, Mississippi, for over 35 years, where he has worked to provide quality and compassionate care to all of his patients.
Dr. Mario has been very active in his community and in surrounding schools. He is the former president of Kiwanis club of Biloxi, the former president of Our Lady of Fatima Elementary School, a former board member for the Saint Patrick Catholic High School and the Saint John Catholic High School. Dr. Roybal is currently a member of the University of Ole Miss Association and a member of the American Dental Association®. Dr. Mario Joseph Roybal is a member of Saint Michael’s Catholic Church. Dr. Roybal and his wife Carol have four children: Anne Lauren, Brennan, Stephen and Elissa.
Hang Nguyen, DDS
Dr. Hang Nguyen is proud to return home to Biloxi as the newest provider at Dr. M. J. Roybal Family Dentistry, beginning July 1, 2025.
A graduate of the University of Mississippi Medical Center School of Dentistry, Dr. Nguyen brings a passion for accessible, compassionate dental care rooted in her own experiences growing up in East Biloxi. Fluent in Vietnamese and certified in basic medical Spanish, she is dedicated to bridging language and cultural gaps in health care.
Dr. Nguyen’s clinical expertise spans pediatric and cosmetic dentistry, endodontics, surgical extractions and more – most available same-day. Her mission-driven approach has been shaped by years of volunteerism in underserved communities and leadership in dental ethics and admissions. By joining Dr. Roybal’s long-standing practice, she aims to expand local access to high-quality care while honoring the relationships that have defined Dr. M. J. Roybal Family Dentistry for decades.