Harbourside Dental is the new name of a dental practice that many people in Port Dalhousie and the greater  St. Catharines area have always known as “Dr. Korody & Associates”.  In September 2016 Dr. Frank Korody sold his practice to Dr. Mark Poustie.  Dr. Frank, however, continues to work in the office most days with a slight reduction in his hours of availability.  There have been no changes with the “Office Team”, in the way we care and provide dentistry, and fees remain the same.


Dr. Frank always felt that if he could find the right individual who possessed similar traits and philosophy of life and practice to his, and someone whom he could trust to care for his practice family as he would and someone with whom he could confidently work with … then he would consider selling his practice.  He can proudly say that he found that person in Dr. Mark Poustie.  He feels confident that he can pass the torch to him for the next generation of patients.


Dr. Mark is a warm, gentle, compassionate and caring person who is both an excellent dentist and a dedicated family man.   Mark has a kind soul and gentle demeanor.  He combines traits that allow him to balance career and family.  Mark and his wife Heather were both raised in the Niagara region and were drawn back to the area after many years away attending university and completing their post secondary degrees.   Mark, Heather and their two children live in Port Dalhousie and have been part of the community for the last 15 years.

Our Mission Statement

To our patients, we provide our knowledge, skill & expertise. We encourage our patients to share with us their needs & concerns. Together, we work to achieve the optimum in dental health.


Our Philosophy

Harbourside Dental is committed to helping our patients achieve the best possible outcome for their dental health in a calm and caring environment.

We strongly encourage our patients to have a regular comprehensive dental and periodontal exam which includes a thorough exam of the teeth and gums. These exams help us create a personalized treatment plan specifically for each patient. Regular appointments help minimize and sometimes eliminate the need for further dental procedures. All treatment options are explained thoroughly and and we are happy to answer any questions.

Our Team

Dr. Mark Poustie

Family Dentistry

Dr. Mark Poustie grew up going to his uncle's dental office with his family for all their dental work.  Going to his uncle’s practice was always such a positive experience and was what instilled the desire in Mark, from a very young age, to become a dentist.

The road to dentistry started at the University of Western Ontario where Mark received his Bachelor of Science degree in Environmental Science and then went on to obtain his Masters of Science degree in anatomy and cell biology.  From there, he went on to pursue his true passion and received his Doctorate of Dental Surgery degree, also from the University of Western Ontario.

Dr. Mark Poustie is a gentle and caring dentist who truly strives to provide patients with quality, personalized service and will go out of his way to make sure your experience is a positive one.  He is interested in open communication with his patients, providing the highest level of care and clinical excellence.

Mark takes the time to explain the treatment choices and services available to his patients.  He makes each individual feel they are a part of the decision-making process.  His reputation for patient-friendly service has made him very well-liked.

Mark considers his professional and caring staff among his most valuable assets. The staff is truly a team and enjoys working together. Together, they create a relaxed office environment.

    Dr. Frank Korody

    Family Dentistry

    Personal History and Education:

    Dr. Korody received his doctorate from the University of Toronto in 1978 & is a past president of the Niagara Peninsula Dental Association (1991-1992).

    At Work:

    Dr. Korody is a caring dentist who uses only the most advanced materials & procedures. The doctor & his team practice comfortable, health-centred dentistry with a strong emphasis on getting to know each patient. In addition to his technical proficiency, Dr. Korody is a careful listener & will explain beforehand which treatment is best for your individual needs.

    He looks forward to showing you how regular dentistry can improve your life.


      Office Manager

      Shannon started her career as a Registered Veterinary Technician and then went onto managing the surgery department in a veterinary hospital in Mississauga. In March 2016, Shannon left Veterinary Medicine to take on a new challenge of managing in the dental health care field. Shannon joined Harbourside dental in September 2016. Her goal is to make sure our staff makes your visit to our office as comfortable as possible. Please feel free to offer suggestions or speak to her about any of your dental needs.


        Hygiene Treatment Coordinator

        Candice joined the team in 2009. She is the friendly voice you hear on the phone when calling to book your hygiene appointments. You may also see her in the office assisting with the hygienists. She loves all aspects of her position and loves to see the patients smile.


          Registered Dental Hygienist

          Dianne began her career as a Dental Assistant. She quickly returned to college and became a registered dental hygienist in 1982. Dianne has had the pleasure of working with the team at Harbourside Dental for many years.  Dianne is a former clinical teacher at the Niagara College Dental Hygiene Program.

          Dianne's gentle touch and her smile help her client's feel comfortable. She is passionate about delivering the highest quality dental hygiene care to clients of all ages.


            Registered Dental Hygienist

            Nicole started her path in the dental field as far back as high school, where she participated in a co-op program at a local hometown dental office, in Grimsby, ON.  She then went on to graduate from Niagara College of Applied Arts and Technology’s Certified Level II Dental Assisting program in 2007 and the Registered Dental Hygienist’s program in 2013. Working in the dental setting for the past 10 years has been immensely rewarding and has become a passionate life path for Nicole; this truly reflects in the care that she gives to each and every one of her client’s! Joining the Harbourside Dental team in September 2017 has led to an excellent fit amongst her highly professional and compassionate colleagues.


              Registered Dental Hygienist

              Like some of our other hygienists, Erin's dental career began with a high school co-op placement in her hometown of Tecumseh near Windsor, ON. She had aspirations of becoming a dentist but after shadowing the hygienist, she decided a preventative approach to oral health and education better suited her personality. Over her 10 years as a hygienist Erin has taken advantage of her time off to travel. Erin joined us as a permanent addition to our office in Sept 2020 after working at our office on many occasions over the last 3 years of her living in Niagara.


                Registered Dental Hygienist

                Shayna, a northern girl from Sudbury Ontario, moved to the Niagara region 6 years ago to pursue her studies in dental assisting at Niagara College. Her passion for the dental field led her back to Niagara College where she graduated from the dental hygiene program in 2018.

                Through a preventative approach and the desire to advocate for her patients oral and overall health, Shayna is humbled to have found a profession she is passionate about. This shows through her chair side skills and welcoming attitude.




                  Registered Dental Hygienist

                  Jasmine began her path in dentistry by completing the Dental assisting program at Canadore College in 2009 followed by the Dental Hygiene program right afterwards. She joined the Harbourside team in 2021 after she relocated to the area from Northern Ontario and is thrilled to be working in Port Dalhousie. Jasmine loves getting to know the patients and aims to create a pleasant experience for everyone she meets.

                  When Jasmine isn’t at the office you’ll most likely find her exploring the outdoors with her husband and four legged friend Webster or setting off to check another country off of her bucket list.


                    Certified Dental Assistant

                    Sandra has returned from a brief period of retirement to re-join the team as a Chairside Assistant and Central Sterilization Assistant.  Some of you may remember her as your Dental Hygienist from a few years ago.  In total Sandra brings some 30 years of dental experience to share and provide care for you.  Her main reason to return to the office, was because she liked working with her colleagues and says it    “is too much fun to leave behind”......just yet.


                      Certified Dental Assistant

                      Emily joined us in May 2021 as a co-op student from Niagara College and has been a part of our team ever since.  She graduated from Dental Office Administration back in 2018 and soon realized she loved the clinical aspect more so she went back to school for Dental Assisting and graduated in June 2021.  She hasn't looked back!



                        Certified Dental Assistant

                        Jodi graduated as a Certified Level II Dental Assistant in 2008 and has worked as an assistant ever since.  She has worked at a few offices in the Niagara Region which has helped her gain knowledge in many aspects of dentistry ranging from simple to more complex surgical cases.  When she is not at the office she enjoys travelling and spending time with her family.


                          Certified Dental Assistant

                          Christina joined our team in May 2022 after graduating from Niagara College.  She has a gentle, caring nature and understands that everyone's dental journey is unique.


                            Office Mascot

                            Finley is Dr. Mark 's dog! He is an apricot standard poodle. He occasionally comes into work with Dr. Mark's wife Heather.  When he is at work, he spends his time roaming around the office.  If you are here when he is,  you can request a visit with him. He is a very gentle dog and just loves people!