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. Nick Mlekuz

    Family Dentistry

    Nick received his Doctorate of Dental Surgery from the University of Toronto in 1966.  After graduation, he started his own practice on King Street in Hamilton then moved to Queenston Road in 1975.  In 2010 he became an associate for Dr. Poustie.  He loves his work and the comaraderie with patients and staff.

      Dr. Kristjan Mullerbeck

      Family Dentistry

      Dr. Kristjan Mullerbeck has always enjoyed the sciences and fine arts. During his undergraduate studies at York University, Dr. Kristjan gained an appreciation for healthcare through his study of anatomy and physiology. In dentistry, Dr. Kristjan has found the perfect combination of sculpture and science while earning his dental degree at Western University.

      Dr. Kristjan has a strong desire to ensure that his patients are comfortable so that they can maintain their best possible oral health. He enjoys answering any questions his patients may have or just talking to patients in general. He has also enjoyed bringing the dental office on the road to impoverished communities on several mission trips.



        Office Manager

        Heather joined the practice in January 2011, shortly after her husband, Dr. Poustie, bought the practice. Heather has a strong health science background which has been very helpful working in the dental field. She received her Honours Bachelor of Science from the University of Western Ontario in Foods and Nutrition. She worked as a Registered Dietitian for a number of years before deciding to come work at Queenston Dental.  Heather could not ask for a better staff to work with!


          Office Manager

          Shannon joined us at Queenston Dental in February 2016 (and has been a patient here since 2008).  She started her career as a Registered Veterinary Technician and worked in the veterinary field for 16 years.  After deciding on a career change, Shannon left her position of managing the surgery department at a referral hospital to come to Queenston Dental. Shannon loves meeting our patients and making their visit to our office as comfortable as possible. Please feel free to offer suggestions or speak with her about any of your dental needs.


            Receptionist / Financial Coordinator

            Lorraine started working at the front desk at Queenston Dental in 1983. She enjoys the friendships she has developed with the many patients over the years.


              Treatment Coordinator / Receptionist

              Shauna is the latest member to join our team. After graduating from McMaster University, Shauna went onto George Brown College in Toronto. She has been happy in her career as a Dental Assistant Level II and expanding her knowledge at reception and as our new Treatment Coordinator.


                Dental Hygienist

                Stephanie joined the team at Queenston Dental in June 2015. She started her career as a Dental Assistant in 2004 and later went on to complete her Dental Hygiene certification in 2009. Stephanie is passionate about educating patients on their dental care so they can achieve optimal oral health. She prides herself on providing the highest standard of care and always does so with a smile.


                  Dental Hygienist

                  Elaine graduated from Dental Assisting in 2007 in Northern Ireland and worked in Belfast for a number of years before going back to school for Dental Hygiene in 2013. Elaine loves dental hygiene and seeing the patients smile makes it effortless.


                    Becky graduated from Niagara College in 2013. She is originally from Niagara Falls, but has fallen in love with Hamilton.  She enjoys educating patients on the benefits of good oral hygiene as well as collaborating with colleagues to create patient specific treatment plans.