Dr. Nicole Mirzakhani, Principal Dentist

Dr. Nicole Mirzakhani (or “Dr. Nicole” as her patients know her) completed a double specialty program in Pharmacology and Human Biology at the University of Toronto. She then obtained her Doctoral of Medical Dentistry (DMD) from Tufts University, School of Dental Medicine in Boston, after which she returned home to Canada and obtained her Doctoral of Dental Surgery (DDS) degree. In 1998 she started her dental career in Cobourg. She then operated her own dental practice in Scarborough from 2002 until 2009. In 2009 she took over the dental practice of retiring doctors Hansen and Leppert in Bowmanville. In July 2012, Dr. Nicole relocated this practice to its current location. She is the founder and principle dentist of Aspen Springs Dental Centre.

Dr. Nicole is an Invisalign provider and is passionate about enhancing her patient’s smiles by straightening their teeth.

“My passion for dentistry gives me one of the greatest joys in the world, allowing me to make a positive change in the lives of my patients,” says Dr. Nicole who enjoys spending time with her family as well as physical fitness, yoga, swimming and cycling in her free time.

Dr. David Nguyen

Since graduating from the New York University College of Dentistry in 2006, Dr. David Nguyen (or “Dr. David” as his patients know him), has practiced in the Peterborough and Durham Region, continually attending courses and seminars in all areas of dentistry but with particular interest in crown and bridge, cosmetics, endodontics (root canal treatment), and implants.

“… At the core of it, all are the people, our patients, and that’s what makes dentistry most rewarding. In a growing town like Bowmanville, you can meet four generations of a family in a single day or week. I consider that a tremendous honour, to be entrusted by an entire family to meet their dental and oral health needs… I enjoy bridging the gap between what’s out there in dentistry and what meets each individual’s needs. I’m delighted that everyone on our team is committed to that” says Dr. David who lives with his wife Janice and daughter Charlotte.

Dr. Katayoon (Kathy) Azizi

Dr. Katayoon Azizi received her Doctorate of Dental Surgery in 2004, she then completed a one- year Master of Science (Prosthodontics) program at The University of Manchester. Dr. Azizi successfully passed the Canadian dental boards before registering as a general dentist in Ontario. She has a membership with the royal college of dental surgeons Ontario and Ontario dental association. She has been an associate general dentist in various dental offices in GTA since 2013. Dr. Azizi (or “Dr. Kathy” as her Patients know her) enjoys all aspects of general dentistry from cosmetics to preventative care. She provides dentistry for patients of all ages and takes pride in delivering gentle care that results in healthy beautiful smiles. On her own time, Dr. Azizi loves spending time with her family.

Dr. Ava Naghavi

Dr. Ava Naghavi graduated with Honours from the Faculty of Dentistry at the University of Toronto. Prior to that, she received a Bachelor of Science in Psychology and Biology from York University. She is a member of the Ontario Dental Association, the Canadian Dental Association and the Academy of General Dentistry.

Dr. Naghavi is passionate in all areas of dentistry. She is committed to providing comprehensive oral health care to her patients. She enjoys working with patients of all ages including kids. Dr. Naghavi is also certified in oral sedation to help with treatment of anxious patients. Dr. Naghavi is excited to work with you and your family to achieve healthy and beautiful smiles!

Dr. Ava Naghavi

Dr. Brian Kumer graduated from the Faculty of Dentistry at the University of Toronto in 1984. He is a general practitioner who focuses on wisdom teeth removal, complicated extractions, and dental implant placement. He has completed many continuing education courses with special emphasis on extractions and implant surgery. He is a recent graduate of the Gide institute, a high-level implant training centre based in Santa Monica California. Dr. Kumer has two daughters, loves to travel and recently got married. He has traveled to Israel and the Philippines doing volunteer dentistry. Dr. Kumer recently reached his lifelong goals of climbing to the top of Mount Kilimanjaro and the “Trek to Everest Base Camp”.

Dr. Kumer is also certified for the administration of oral sedation and works closely with an anesthesiologist for I.V. sedation. Dr. Kumer is passionate about his career. He loves his work and looks forward each day to helping his patients reach their desired dental goals.

Dr. Ava Naghavi

Dr. Saade received his Doctor of Dental Surgery degree from the University of Shiraz in 1999. He successfully passed the Canadian National Dental Boards in 2015 and currently he is a member of the Royal College of Dental Surgeon of Ontario, Canadian dental association, Alberta dental Association and Ontario dental association. As an experienced dentist with more than 18 years in the General Dentistry, in Iran (Shiraz) and Canada (Alberta and Ontario) he brings unique knowledge and experience to his patients that enable him to excel in his career. He is dedicated to providing quality dental care to his patients and making every dental visit as comfortable as possible. He is highly skilled in all aspects of dentistry such as Restorative dentistry, Veneers, Crown and Bridges, Root Canals, Sedation and Dentures and Implants.

Aside from dentistry, he enjoys painting and drawing and spends time with his family and catching up on Sports such as soccer, hiking and swimming.

Dr. Stephen Ing, Anesthesiologist

Dr. Stephen Ing graduated in 1999 with his Doctor of Dental Surgery degree from the University of Toronto. In 2008, he completed his three-year postgraduate training in dental anesthesia at the University of Toronto. He is a diplomat of the American Dental Board of Anesthesiology and a certified specialist in dental anesthesia registered with the Royal College of Dental Surgeons of Ontario.

Dr. Jennifer Kushner, Periodontist

Dr. Jennifer Kushner obtained her BA from the University of Western Ontario in 1994 and BSc from York University in 1995. In 1999 she received her Doctoral of Dental Surgery (DDS) with honours from the University of Toronto. Following that she did a one-year general practice residency at Mt. Sinai hospital in Toronto. In 2003 she obtained her Master of Science (Periodontology) from the University of Toronto.

Dr. Kushner is a fellow of the Royal College of Dentists of Canada (RCDC) since 2003.

Dr. Kushner has been in private practice in the specialty of Periodontics in Etobicoke, Ontario since 2003.

“I like working in Bowmanville because the patients are so appreciative and there are few opportunities for patients to receive periodontal care from a specialist in the Bowmanville area. I also enjoy working with Nicole and her wonderful staff at this practice,” says Dr. Kushner who joined our practice in 2010 as a Periodontist.

Dr. Dianna Malkin, Periodontist

Dr. Dianna Malkin, D.D.S., M.Sc. (Perio) F.R.C.D.(C) received her dental degree at Western University (UWO) after studying Chemistry at York University. After practicing as a general dentist for several years, she pursued her specialty training in Periodontics and Implant Surgery. She received her Master’s in Periodontology at the University of Toronto. Her master’s research focused on diabetic healing of bone tissue.

Dr. Malkin is a Canadian board-certified periodontist. Her scope of practice includes treatment of periodontal diseases, soft tissue grafting, and regeneration of periodontal tissues. She also performs a wide range of implant dentistry procedures such as dental implant placement, ridge preservation, and bone grafting surgeries including ridge augmentation and sinus grafting. She is a clinical instructor at the University of Toronto in Undergraduate Dentistry. Dr. Malkin is a Fellow at the Royal College of Dentists of Canada, the Ontario Dental Association, the Canadian Dental Association. As an advocate for improving patient education and access to dental care, she was on the Executive Committee for Oral Health, Total Health London, an organization devoted to promoting access to care for special needs patients. She was also an active participant in the Dental Outreach Community Service program in London.

Dr. Malkin speaks three languages and loves traveling. She enjoys hiking, painting, and tennis.

Dr. Michael Sirisko, Orthodontist

Dr. Sirisko attended the University of Toronto and over a fourteen-year period obtained his Bachelor of Science, Doctor of Dental Surgery, specialty training in Orthodontics, and Ph.D. in Neurophysiology. In addition to part-time orthodontic practice, for several years he was a clinical instructor in the undergraduate orthodontic program at the University of Toronto dental college as well as teaching continuing education for the Ontario Dental Association. He has served on the executive and as president of the Orthodontic study club of Ontario and as a consultant to the Royal College of Dental Surgeons of Ontario. “I am very fortunate to be part of the dental community in which I work. Creating beautiful healthy smiles for all ages is a great reward", says Dr. Sirisko who in his spare time during the warmer months enjoys exploring the wilderness of Ontario and spending quality time with his family. He is a proud father of two daughters who have very nice straight teeth!

Donna, Hygienist

Donna has been a hygienist since 2010 and has joined Aspen Springs Dental Centre in 2017. She loves helping her patients achieve a healthy smile. Although she enjoys working with clients of all ages, she especially enjoys working with children, helping them to build a healthy foundation for their oral hygiene. She is passionate about educating her adults and children alike on oral health, and how it affects their overall health. When she is not working at Aspen Springs Dental Centre she spends time listening to true crime podcasts and enjoys DIY projects and spending time with her family.

Amanda, Hygienist

Amanda has been in the healthcare field since 2003 as a Massage Therapist. She decided to expand her education and went back to school to become a Dental Hygienist and graduated from Oxford College in 2019. Her daughter and son have been long time clients at Aspen Springs and she is now excited to be part of the team. She is passionate about educating her clients on the effects of oral care and how it relates to their overall health. Her patients appreciate her gentle hand and calming approach to treatments. In her off time, you can find her camping and going on Jeep adventures with her family.

Amanda, Hygienist

Lizzie graduated from Durham College with a dental hygiene advanced diploma in 2019. She obtained an Award of Excellence from the college and joined Aspen Springs Dental Centre in 2020. She enjoys discussing the effects of oral health with patients and how it affects their overall wellbeing. She loves to help patients gain a healthy, happy smile. When she is not working, Lizzie loves to try and make new recipes, being outdoors and spending time with her family and friends.

Lindsay, Hygienist

Bio coming soon.

Tracy, Office Manager

Tracy graduated from Toronto School of Business in 1990 as a dental assistant and has worked in the field since then. Having both clinical and administrative knowledge and experience she is able to get proper answers to your dental questions. "I love what I do and I like to take on a hands-on approach so don't be surprised to see me in the operatory helping out the team when needed", says Tracy who lives in Whitby with her family and enjoys camping and atving in her spare time.

Ray Fadavi, Clinic Director

Ray graduated from Ryerson University in 1992 as an Electrical Engineer. Immediately after graduation he started working as an engineer at Scintrex LTD. Two years later he obtained his Professional Engineer Designation and moved on to management in technology and manufacturing fields working at companies such as IDS and Amphenol Canada. He then earned his MBA at York University in 2000 and moved into the Products Certification field working for Canadian Standards Association managing certification teams within Canada as well as internationally. Ray left corporate life and joined Aspen Springs Dental Centre as a Director in July 2012 and has been in charge of the clinic's finance, marketing and HR since then. Ray lives in Toronto with his wife (Dr. Nicole) and two children and enjoys travel and reading in his spare time.