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Learn about Us and Our Comfortable Family Dentistry

Improving our patients’ health in the most relaxed manner has kept our patients coming back for over 30 years. Located on the corner of Simcoe Street South and Gibb Street, our state-of-the-art office and friendly staff allow patients to relax in our care. With our children’s play area, aquarium and LCD television screens in every room, we cater to all ages. We welcome new patients every day and look forward to seeing your bright smile in the near future! Contact us today.

Meet Our Staff

Our dentists, hygienists and office staff are all highly professional and experienced. Our job is to make your visit as comfortable as possible.

Dr. Roxana Popa

Dr. Roxana Popa is bringing over 15 years of experience in general, restorative, cosmetic and implant dentistry to the clinic, being known by her gentle touch, and a great sense of humour has put the patients (and assistants) at ease right away.

She is an active member of the Royal College of Dental Surgeons of Ontario (RCDSO), Ontario Dental Association (ODA), Canadian Dental Association (CDA), and Fellow of The Academy of General Dentistry (FAGD). She enjoys all aspects of dentistry with a focus on improving smiles through Invisalign® treatment.

Dr. Popa is an advocate of extensive continuing education completing a residency in Implantology and having completed mini residencies in Snoring, Sleep Apnea and Occlusion.

Outside of the dental office, she enjoys reading, travelling with her family, ballroom and Latin dancing (being twice the winner of “Dancing with the Docs,” benefiting The United Way Charity).

Dr. Alexandra Zapata

Dr. Alexandra Zapata has practiced dentistry well over 18 years and now is an asset to our practice. She moved here from Colombia, South America and is fluent in Spanish and English. She also specializes in cosmetic dentistry and has her Fellow in Oral Surgery from Santiago de Cali, Colombia. When not in the office, Dr. Zapata enjoys dancing, cooking and travelling with her family on hiking/camping trips. She is also an active member of the Royal College of Dental Surgeons of Ontario (RCDSO).

Dr. Melissa Goodman

Dr. Melissa Goodman graduated from the University of Toronto, Faculty of Dentistry, in 2006. Upon graduation, she was selected to participate in a one-year residency at Sunnybrook Hospital in Toronto, where she performed all aspects of dentistry, with an emphasis on patients with complex medical problems. Dr. Goodman continued training at New York University in New York City, where she earned a specialty certificate in periodontics and implant surgery. (Her high standing there won her the clinical award for excellence in postgraduate periodontics.) She is a fellow of the Royal College of Dentists of Canada.

Dr. Goodman is a gentle and caring periodontist and looks forward to making her patients feel comfortable during their visit.

Dr. John Sciuk

Dr. John Sciuk has been serving the dental needs of Durham region residents for more than 30 years. Providing comfortable care to his many clients is a priority for Dr. Sciuk and his staff. You will be amazed at how quickly John will put you at ease. Give our office a call today to set up a consultation.

Marianne Petropoulos, Denturist

Upon graduating from the University of Western Ontario with a B.Sc. in Biology, Marianne was accepted into the Denturism programme at George Brown College. While attending GBC, she continued to take courses at UWO, which eventually culminated in her achieving a BA Honours Specialization in Anthropology. With more than 8 years of post-secondary education, she has developed an in-depth understanding of both the general and dental sciences. Marianne has been serving the Durham community since 2005 and has been an active member of Dr. Sciuk’s team since 2006. Marianne looks forward to working with you in enhancing your new smile.

Our Staff

Here at Oshawa Dentist, we believe that you are only as strong as the team behind you. Because of this belief, we hire nothing but the most professional and caring staff members. But don’t take our word for it – come in today and see for yourself.



Oshawa Dentist
259 Simcoe S,
Oshawa, ON

L1H 4H3

Phone: 905-725-6060



Monday 08:00 AM - 08:00 PM

Tuesday 08:00 AM - 07:00 PM

Wednesday 08:00 AM - 05:00 PM

Thursday 08:00 AM - 05:00 PM

Friday 08:00 AM - 04:00 PM

Closed on Weekends
Emergency Services Available


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