AboutGDC Smiles

GDC Smiles is a Gainesville based family dentist practice that treats patients of all ages. We are committed to delivering the highest quality dental care and do so using advanced dental equipment. We are a cosmetic dentist that offers services like checkups, teeth cleaning, crowns, veneers and more.

We also perform emergency dentist services that include bonding, root canals, crowns, and bridges. As a local dentist, we create lifelong relationships with our patients and their families and work to ensure that they receive treatments in a comfortable and relaxed environment. Dr. Lia Gallo-Urrego and our staff invite you to schedule an appointment by calling 770-504-5725 and experience why our patients think GDC Smiles is the best dentist in Gainesville.

Dr. Lia P. Gallo-Urrego, DDS

Dr. Lia Gallo-Urrego loves what she does every day; helping people smile. For over 25 years of transforming people’s smiles, she says it’s really her life that has been most affected and her heart that has been touched. The transformation she sees in her patients is not only physical, but emotional as well, as they walk taller, smile wider, and live life a little bit happier. Dr. Gallo-Urrego prides herself in the community she has established with her patients. They trust her, and this makes all the difference in an ideal doctor-patient scenario.

Dr. Gallo-Urrego enjoys spending time with her husband Harvin, and her daughters, Camila and Valentina. She enjoys traveling and loves to dance.


Dr. Gallo-Urrego earned her Doctor of Dental Surgery (DDS) degree in 1993 from University of Antioquia, Colombia, one of the most prestigious universities in South America. She graduated as Salutatorian of her class. She later earned her second DDS degree from the University of Colorado School of Dental Medicine in 2008.

Extensive Advanced Training in the All Areas of Dentistry with Emphasis in:

  • Cosmetic Dentistry
  • Full-Mouth Reconstructions
  • Smile Makeover
  • Endodontics
  • Dental Implants

  • Dr. Gallo recently completed an extensive Implant Externship Program with Stony Brook School of Dental Medicine and Dental XP to keep up to date with the latest trends in the dental field. As an avid student, Dr. Gallo is also preparing to take the prestigious Associate Fellowship exam of the American Academy of Implant Dentistry (AAID), where she is also a member.


  • American Academy of Implant Dentistry (AAID)
  • Academy of General Dentistry (AGD)
  • American Academy of Cosmetic Dentistry (AACD)
  • American Dental Association (ADA)
  • Georgia State Dental Association
  • Northern District Dental Society
  • Hinman Dental Society

  • Giving Back

    With a true love for the work she does and the people she encounters, Dr. Gallo-Urrego volunteers much of her time giving back. As a member of Free Chapel she heard about her church’s program for men and women recuperating from drug addiction, No Longer Bound and New Beginnings, and decided these men and women deserve another chance at a better life. She began giving total reconstruction of their mouths, free of charge.

    "Getting to be a part of something so monumental and such a beautiful change in someone’s life towards a better future is what makes me proud to be a doctor and thankful for the work I get to do every day."

    Dr. Gallo-Urrego is also a volunteer for the Good News Clinic, where she treats patients for free, that could otherwise not afford treatment themselves.

    Dr. Juan C. Cruz, DDS

    Dr. Juan C. Cruz is the newest addition to the GDC Smiles family as our Associate Dentist. He was born and raised in Colombia, South America where he first fell in love with the field of dentistry. There is something about seeing the joy in a patient’s eyes after giving them a smile they can be proud of, that fills Dr. Cruz with pride and genuine fulfillment in his work and career. He enjoys the challenge of transforming the many smiles that come through our office. You can easily find Dr. Cruz chatting with his patients about life, cracking jokes, and being intentional with his time answering their questions and easing away their concerns.

    In his free time, Dr. Cruz enjoys exploring his new home of Gainesville, Georgia with his wife and 15-year-old son. He loves the outdoors, and if he’s not in the office you can find him traveling, reading, biking and hiking in the North Georgia Mountains.


    Dr. Cruz graduated from the Universidad Autonoma de Manizales with his Doctor of Dental Surgery degree in 1995. In 2017 Dr. Cruz graduated from the University Of Colorado Anschutz School Of Dental Medicine International Student Program. He was awarded the American College of Dentists Award by virtue of Ethics, Scholarship, Patient Care and Professional Behavior. Dr. Cruz also graduated at the top of his class as valedictorian for the International Student Program Class of 2017.


    Omicron Kappa Upsilon Honors Fraternity

    Giving Back

    Outside of the office Dr. Cruz has a passion for serving his community with his talents and profession. Dr. Cruz has volunteered his time providing free dental treatment for children, Latino Americans, and poverty-stricken families through various organizations such as SOS Clinic, Clinica Latina, and Dentistry from the Heart. He has also given his time and expertise through teaching opportunities with the Medical College of Georgia as an adjunct instructor.

    Olivia Corbin

    Hygienist (RDH) / Office Manager

    Olivia is a Registered Dental Hygienist and has been on the team for four years now. She was promoted to the position of Office Manager three years ago thanks to her love and devotion to GDC Smiles’ Mission.

    In 2014, Olivia graduated from Athens Technical College with an Associate’s Degree in Applied Science. She is dedicated to always furthering her education and makes sure to attend multiple continuing education (CE) courses each year. She loves to give back her time to the community and volunteers her talents and efforts at Good News Clinic, a clinic that offers free dental services to the Gainesville community.

    As a new homeowner and a newlywed, Olivia spends her free time making her house feel like a home, and playing with her pet pig Penny.


    Marketing Director/Patient Relation Coordinator

    Ana, the Marketing Director and Patient Relation Coordinator at GDC Smiles, loves interacting with all of our patients on social media and even more when she gets to meet them face to face. She is constantly striving to maintain a high standard of customer service throughout our team by leading the team through extensive customer service and employee training.

    After graduating from Kennesaw State University with a BBA in Marketing, Ana earned her Masters of Science in Merchandising and International Trade from the University of Georgia. She is a true team player, taking the GDC Smiles’ Mission to heart, and constantly making sure the team always put its best foot forward.

    Ana loves to travel, meet new people of different cultures, and volunteer for various organizations in her community.


    Insurance Coordinator

    As our Insurance Coordinator, Maggie has extensive experience in the dental field having previously worked as our dental assistant for four years. Maggie values her education and attended both North Georgia Technical College and Lanier Technical College, and recently received her expanded duties certificate from Gwinnett Technical College. Her favorite part about working at GDC Smiles is getting to serve both the Hispanic and American community.

    Maggie is married to her loving husband of seven years and together they enjoy spending time with their sweet son, Rafael. It’s a special time for their family as they are anxiously awaiting the arrival of Rafael’s new baby brother at the end of the summer!


    Scheduling Coordinator

    Priscila is a graduate from Lanier Technical College and is very excited to continue to grow in the medical field. As our Scheduling Coordinator, she is happy to answer any questions our patients may have and is ready to schedule their appointments to best fit their needs. Her outstanding personality, and heart, has served the GDC Smiles team for two years now. She says that her favorite part of her position is getting to know all of our patients and seeing them throughout her community. Having the opportunity to interact with each patient and making sure everyone begins and ends their visit with a smile is something she strives for.

    In her free time, Priscila likes to be outdoors either walking her dog or spending time with her friends and family.