As an orthodontist, I’m truly blessed to wake up and do something I love: creating beautiful smiles.

I really enjoy seeing the impact my team and I have over the course of treatment. When I’m able to give someone an incredible smile, one that allows their confident personality to shine, I am thrilled! Nothing beats seeing someone’s heartfelt smile and knowing you played a part in creating it.

We often have former patients return just to say hello and visit, and we are now on our third generation of LaHaye Orthodontics patients. I love to see those happy faces — and know that each patient is enjoying the lifelong benefits of stronger oral health and improved self-esteem because of what we do.

My father, Philip W. LaHaye, Jr., opened the practice in 1973. Growing up seeing his passion for orthodontics led me to follow in his footsteps. I joined him in 2004 and have continued his tradition of orthodontic excellence and care since that day.

With a legacy and reputation of nearly 50 years, my team and I ensure each patient’s orthodontic journey is enjoyable and memorable, delivering the smile each patient desires.

~ Dr. Mark B. LaHaye


  • E.D. White Catholic High School - ‘93
  • Auburn University – Bachelor of Science, Cum Laude - ‘98
  • Louisiana State University School of Dentistry – Doctorate of Dental Surgery with honors - ‘02
  • Baylor College of Dentistry, Texas A&M Health Sciences, Department of Orthodontics – Master of Science, Certificate in Orthodontics and Craniofacial Orthopedics - ‘04


  • American Association of Orthodontists (AAO)
  • Southern Association of Orthodontists (SAO)
  • Louisiana Association of Orthodontics* [Past President] (LAO)
  • American Dental Association (ADA)
  • Louisiana Dental Association (LDA)
  • Bayou District Dental Association* [Past President, two terms] (BDDA)
  • Baylor Orthodontic Alumni Association* [Past President]
  • Cloud 9 Ortho Advisory Board (Active Member)
  • C. Edmund Kells Honor Society
  • American Academy of Craniofacial Pain Outstanding Student Award
  • Beta Beta Beta Biological Honor Society
  • Southwest Academy of Restorative Dentistry
  • Baldridge Scholarship Recipient

Dr. LaHaye is passionate about orthodontics and is continually striving for ways to improve his delivery of care. Whether it’s learning new techniques, training his team members, or investing in dental technology such as 3D scanners and printing, he is always eager to learn and pass on that information to his team and patients.

In addition to being an active member of the Cutting Edge Orthodontics Study Club, Baylor Ortho Study Club, and on the Cloud9Ortho advisory board, Dr. LaHaye regularly attends seminars, lectures and meetings. He also keeps current on the latest research through professional journals and other orthodontic and oral healthcare publications.

His wife, Toni, is a licensed aesthetician and owner of LaHaye Skin Care. She is passionate about teaching her clients how to prevent, correct and maintain healthy skin for a lifetime. 


A Thibodaux native, Dr. LaHaye loves raising his family in his hometown.

He and his wife Toni have two daughters, Ava and Arden, as well as two family cats, Oreo and Figaro. Family is Dr. LaHaye’s top priority, always, and he loves the time he spends with them. On free weekends, they are always ready for an adventure, whether that’s a family cruise, a trip snow skiing or scuba diving, or just a day trip into New Orleans. He truly lives his motto of “I may grow old but I refuse to grow up.”

Dr. LaHaye is an avid runner and has completed two full IRONMAN triathlons, multiple IRONMAN 70.3 events, and various marathons and half marathons.


Dr. LaHaye and his wife believe in supporting their community and regularly participate in and sponsor local events. They also contribute to many local organizations, including:

  • Bayou Country Children’s Museum (Flagship Sponsor)
  • CASA of Lafourche (Court Appointed Special Advocates for children)
  • Thibodaux Volunteer Fire Department (Active Member, Fair Committee Member)
  • Krewe of Chronos* (Co-Captain, Past President)
  • E.D. White High School Alumni Association (Active Member)
  • Nicholls State University 350 CLUB Scholarship donor
  • Femmes Natales
  • Thibodaux Service League
  • Amigas
  • Bayou Country Club and Crawfish Aquatics swim teams
  • Various athletic clubs
  • School fundraisers and activities