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Dr. Iennusa is a 1999 graduate of the LSUHSC School of Dentistry. Upon graduation, he was accepted into the General Practice Residency at LSUHSC-Charity Hospital New Orleans where he was operating room chief resident of the Department of General Dentistry. His responsibilities included working as part of a medical team that provided treatment to medically compromised patients, organ transplant patients and patients undergoing treatment for various types of cancer. In 2001 he joined a private general dentistry practice in Mandeville and practiced general dentistry full-time until 2005 at which time he began practicing part-time and working as a sales consultant for multiple orthodontic companies. In 2011, Dr. Iennusa was accepted into the LSUHSC Orthodontic Residency. He graduated in 2013 and since that time has maintained a private orthodontic practice in Mandeville, conveniently and centrally located in the Beau Chene Business Park II at the East entrance of the Beau Chene subdivision.  


He is a 1989 graduate of Holy Cross High School and earned a B.S. in Zoology and Physiology with a minor in Psychology in 1994 from Louisiana State University. He resides in Mandeville with his wife, Alyssa, a registered dental hygienist, and his three children, Claire, Julia and Andrew. He is very active in the community and has served as president of the Our Lady of the Lake Men's Club, President of the LA Association of Orthodontists and is on the Board of Directors of Our Lady of the Lake Retreat House in Grand Coteau, LA.


Dr. Iennusa takes great pride in treating his patients and truly treats each one as he would treat a member of his family. His goal is to provide the highest quality care to his patients while having fun in a relaxed atmosphere. When not in the office, Dr. Iennusa consistently attends continuing education courses in order to stay abreast of the latest orthodontic technology that allows him to provide state-of-the-art treatment. He is an avid LSU fan (and former snare drummer for the LSU Golden Band from Tigerland) and can often be found at one of his children's athletic events or with his son chasing redfish and speckled trout.

John Iennusa, DDS - Orthodontist


Dr. Iennusa loves orthodontics!!  His passion is orthodontics and he looks forward each day to spending time with his patients.  Being able to help his patients achieve the smile they have always wanted is the most gratifying aspect of his practice. 

Cindy - Orthodontic Assistant


Cindy has been an orthodontic assistant for the over 17 years.  Her expertise and charming personality are wonderful assets for our practice.  She enjoys working with our patients and spending time with each one at their monthly appointments.   

Alyssa - Office Manager


Alyssa is a registered dental hygienist and a 1997 graduate of the LSUHSC School of Dentistry Hygiene Program.  Her knowledge of dentistry allows her a unique advantage in assisting our patients with their orthdontic treatment. 

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