Meet Our Dentists

image of the doctor Thomas C. Flavin, D.D.S.

Thomas C. Flavin, D.D.S.

Healthy Smiles of Saint Louis

After Dr. Flavin graduated from the University of Missouri Kansas City Dental School, he returned home to St. Louis and has been practicing here ever since. Passionate about continuing education, Dr. Flavin has received advanced training at the prestigious L.D. Pankey Institute, The Dawson Center for advanced education, and The Spear Institute. His memberships include the American Dental Society (ADA), The Missouri Dental Society (MDA), The Greater St. Louis Dental Society (GSLDS), and The American Equilibration Society. Dr. Flavin served as the President of The Greater St. Louis Dental Society and was honored with the Award of Merit in 2006 for his many years of service to the profession. Dr. Flavin is very invested in giving back to his community with both education and care. He is proud of his development of, and ongoing work with, Give Kids A Smile in St. Louis, a not-for-profit organization that provides comprehensive care for underserved children. He has served as Vice President and President since its inception in 2001, and he is especially proud that the ADA has taken the concept to a national level, as its premier access to care program. Dr. Flavin has also served as a board member and President to the Delta Dental Health Theatre of St. Louis. The theatre has served as an educational program for preschool aged children for over 35 years. Dr. Flavin is an avid golfer and enjoys all sports. He also cherishes the time he spends with his wife Debi and their four children.

image of the doctor Tarah Crews, D.M.D.

Tarah Crews, D.M.D.

Healthy Smiles of Saint Louis

Dr. Tarah Crews is from the small town of Staunton, Illinois, where she grew up on a farm raising various animals and growing crops. She has a wonderful, large family of two older brothers and two younger sisters. And she has recently been promoted to mom!

As a child, she enjoyed trips to the dentist and knew that's what she wanted to do. She received her Associate of Applied Science from Lewis and Clark Community College, Bachelor of Science in Biology from Southern Illinois University Edwardsville, and her Doctorate of Dental Medicine from Southern Illinois University School of Dental Medicine in 2016. Dr. Crews strives to further her dental knowledge by participating in many hours of continuing education and is a member of Spear Education. She also enjoys volunteering in the community, in particular - at the Give Kids A Smile Organization.

Dr. Crews exclaims, "What I like most about dentistry is the ability to communicate with and educate my patients about their dental health and improve their oral condition. I pride myself on being an accessible and personable professional dedicated to the care of my patients. Dr. Flavin has been a wonderful mentor to me during my time at Healthy Smiles. Not only has he taught me about dentistry, but his compassion toward each and every patient has made a huge impact on how I practice dentistry. I intend to follow the same practice philosophy and treat each patient as family, just as he has done for many years."

In her free time, she enjoys spending time with her family, reading, and traveling. She's a big fan of the Harry Potter book series, Taylor Swift, and the St. Louis Blues. Most of all, she loves spending time with her son, Austin, husband, Tyler, dogs, Doc, and Deli.

image of the doctor William W. Seaton, D.D.S.

William W. Seaton, D.D.S.

Healthy Smiles of Saint Louis

Dr. Seaton, our distinguished dental professional, recently retired from active practice at the beginning of May 2024 to join the faculty at the SIUE Dental School, where he now works full-time. With a rich background in dentistry spanning over four decades, Dr. Seaton graduated from the University of Missouri, Kansas City, in 1982. He is one of an elite group of highly dedicated dental professionals who have pursued their continuing education at some of the most prestigious facilities in the country.

Dr. Seaton’s continuing education has included specialized courses in aesthetic and restorative dentistry, as well as occlusal (bite) treatment at the Kois Center and the Pankey Institute. His training at the Dawson Academy has focused on diagnosing and treating disorders of the temporomandibular joint (TMD/TMJ), the techniques of splint therapy, and the treatment of symptoms of sleep apnea. He has also pursued courses from Cranham Dental Seminars (now part of Dawson Academy) that focus on contemporary smile design and occlusal concepts, treatment planning, even digital photography, and laboratory communications. Dr. Seaton is a member of the American College of Dentists and a clinical associate professor at Southern Illinois University School of Dental Medicine. He is the past president of GSLDS.

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Office Hours

  • MON - THU8:00 am - 5:00 pm
  • FRI - SUNClosed