Mark A. Peterson DMD, PA

Dentist in Sebastian, FL

Sebastian River Dentistry


Dr. Mark Peterson is a general and cosmetic dentist focused on restorative dentistry with a passion for facial aesthetics. He has extensive experience in procedures such as crowns, bridges, veneers, root canal treatments, dental implants (placement and restorative), aesthetic fillings, extractions, surgeries, teeth whitening, Botox, and Juvéderm. Dr. Peterson believes a wonderful smile is a great asset. He enjoys giving patients something to smile about.

Dentist Sebastian FL - Dr Peterson and his wife

Dr. Peterson set his career path after being 3 years in civil engineering. He decided dentistry was his passion after shadowing his uncle, who was a dentist. Dr. Peterson graduated in 1976 from Jesuit High School and 1987 from Portland State University . He came to Florida soon after graduation to pursue his private dental practice in the "Sunshine State."

Dr. Peterson believes the same skills that define an excellent dentist--attention to detail, knowledge of anatomy and function, and a gentle hand along with an aesthetic eye--are paramount for a good injector of Botox and Juvéderm. His office is warm, clean, and has the latest technology.

Dr. Peterson is known for his honesty, sensible treatment plans, and genuine devotion. His passion is helping patients achieve "their best" smile--one that is attractive, confident, and healthy. Dr. Peterson believes strongly that facial aesthetic procedures should look as natural as possible.

Dr. Peterson's 3 daughters - Sebastian Dentist

Dr. Peterson is a member of the International Congress of Oral Implantologists , the American Dental Association , the Florida Dental Association , and the American Academy of Facial Esthetics . Through his unique blend of artistic and technical skills, he has frequent participation in continued educational courses.

Dr. Peterson ensures that his patients always recieve the latest, most effective treatments possible.

During his free time, he enjoys kiteboarding, deep sea fishing, scuba diving, snowboarding, traveling, and spending time with his wife and 3 daughters.

Meet the Team


Mary Lou - Office Manager

Dentist Sebastian FL - Office Manager - Mary Lou

Mary Lou is the wife of Dr. Peterson. She graduated in 1982 at University of Florida with a degree in Dental Assistant. In September of 2017 she received her credentialing and license as a Phlebotomist. She thoroughly enjoys the dental field and loves the Sebastian area. Her goal is to make sure every visit is efficient and comfortable. She loves spending time with her hushband and 3 daughters. She enjoys boating, fishing, 4 wheeling, swimming, yoga, beach, gardening and family dinners.


Karen - Hygienist

Sebastian FL Dentist - Dental Hygienist - Karen

Karen grew up in the Binghamton, NY area and graduated from Broome Tech Community College as a dental hygienist. She worked in Rochester NY for 3 years then moved to Fort Lauderdale for 14 years. She then moved to Melbourne Beach in 1988 as a hygienist. Overall, she has 46 years of experience, and since 2012 she's been working with Dr. Peterson and his team. She has a daughter, grandson, and granddaughter. In her spare time, she enjoys knitting, reading, and genealogy.




Fellowship Member of the International Congress of Oral Implantologists.