
DR. MATTHEW ORZECH
Dr. Matthew Orzech owns and operates a full-time dental practice with his professional team.
He performs all aspects of general dentistry including: endodontics, implant placement and restoration as well as extractions (both complex and simple) minor periodontal surgery as well as routine maintenance for his patients.
Dr. Matthew Orzech earned his Honours Bachelor of Science degree at the University of Toronto followed by a DDS degree graduating Dental School at Northwestern University in Chicago. He furthered his experience through a one year General Practice Residency at the Erie Country Medical Center in Buffalo, New York. Dr. Orzech is currently a Supervising Clinician at George Brown College Restorative Dental Hygiene Program. He was the principal Dentist for the Humber College “Wellness Clinic”. He volunteered his dental services at the Scarborough Urban Health Outreach Clinic.

DR. MARTIN KELLERSTEIN
Dr. Martin Kellerstein is an experienced and well versed dental practitioner. He received his DDS in 1971 from the University of Toronto. He has serviced the dental needs of the Danforth community for the past 42 years prior to joining Dr. Matthew Orzech and Associations.
Dr. Kellerstein’s wealth of experience in the dental field is evident by his prior affiliations as President of East Toronto Dental Society, the Board of Governors for the ODA, the Academy of Dentistry Toronto and his service as a Clinical Instructor at the University of Toronto in the Restorative Dentistry Program. He is passionate about his profession and strives to continually lend his expertise to patients in a caring and supportive manner.
He is available at Danforth Office.

DR. MARVIN KATZ
Dr. Marvin Katz was born and raised in Toronto. He received his Bachelor of Science degree from the University of Toronto in 1973, and in 1977 his Doctorate of Dental Surgery from U of T followed. A life-long learner, Dr. Katz insures he stays current with dental technology and practices by seeking out and participating in continuing education opportunities. Dr. Katz is a member of the Toronto Crown and Bridge Study Club and Alpha Omega Fraternity. He lives in Thornhill with his wife, and cherishes the time they spend with their three children. An avid sports fan, Dr. Katz says, “I make no apologies for being a die-hard Toronto Maple Leafs fan – go Leafs go!”
Christal Chuback
Christal is a highly regarded professional with extensive experience in the dental field. She graduated from George Brown College with a Level I and II in Dental Assisting and then furthered her education by achieving her Dental Hygiene Degree at the Toronto College of Dental Hygiene. She is an enthusiastic and caring asset to the office that is valued by her patients and the entire dental team alike.
Thuy Truong
Thuy is an enthusiastic addition to our dental team. She completed her Dental Hygiene Degree at George Brown Dental College and offers patients a strong commitment to providing preventative dental health care.
Giovanna Novello
Giovanna is an easy going member of our professional team. She graduated from George Brown College and brings with her an extensive knowledge in patient care and oral hygiene. Her pleasant disposition is a true asset that readily puts patients at ease and enhances their overall dental experience.
Ricardo Nunes
Ricardo is a diligent and enthusiastic professional hygienist. He graduated from Yorkville College and has been a vibrant asset to the practice. His approachable manner and humorous nature readily puts patients at ease.
Jenny Laut
Jenny has been a dental assistant for over 17 years since graduating from the Toronto School of Business in the Dental Chair Side Assisting Program. Her enthusiasm and commitment to patients and the office is clearly evident in her endless patience and easygoing manner. She thrives in every aspect of her job and enjoys the challenges of a busy schedule of assisting Dr. Orzech with complex dental treatments. Jenny is always eager to learn new skills and has furthered her studies through various continuing education courses held at George Brown College as well as attendance at ODAA meetings and professional seminars.
Aditi Srivastava
We are pleased to have Aditi as part of our Dental Assisting team. She is internationally educated in the dental profession and brings to Dr. Matthew Orzech and Associates a wealth of experience having also undergone her Canadian certification training through DC Institute and George Brown College here in Toronto. She also recently completed her Level C CPR training course. Aditi demonstrates her passion and contribution to the dental profession in every interaction with her patients.
Wendy Chan
Wendy enjoys her role as a dedicated dental hygienist. She obtained her degree in Dental Hygiene from George Brown College in 2015 and has been treating patients in our office for several years. She brings her enthusiasm and gentle touch of helping others to our collective dental team.
Hannah Haji
Hannah graduated from Algonquin College with a degree in Dental Hygiene and several years later attended George Brown College to further her education and become a Restorative Hygienist. Hannah also has extensive experience in teaching at George Brown College in Dental Hygiene (Histology) and Dental Technicians (Pathology). She is an extremely compassionate and meticulous professional that diligently strives to provide the best dental care for her patients.
Loan Truong
Graduated from Georgian College in 2006 with Golden Scalar Award and been working in the field for 17 years. She is very effective, provides gentle hygiene care with her exceptional communication skills and interpersonal skills.
She enjoys seeing the difference in patients’ oral health, the opportunity to educate patients on proper oral hygiene care and meeting pleasant people on a daily basis.
Olha Boryskina
Danforth Office
Olha is an experienced and conscientious team member. She graduated as a Dental Hygienist from the Yorkville College with Honours and furthered her education by completing her Restorative Dental Hygiene Degree from George Brown. She prides herself on educating patients about their oral health care and is an integral part of our team creating beautiful smiles.
Luisa Faria
Business Manager
Luisa joined our office in July 2012. She has had an extensive experience in the dental field for over 20 years. She has been instrumental in establishing an office with unparalleled efficiency and customer service she is also trilingual in English, Portuguese and Spanish. Luisa is responsible for staff oversight and all facets of clinical and financial management. She continues to stay abreast of the latest developments in practice and clinical management courses and dental coding workshops. She has been a great addition to our team.
Nancy Colosimo
Office Administrator – Eglinton & Danforth
As a full-time receptionist, Nancy’s inviting smile is the first welcome sign patients receive upon walking into Dr. Orzech’s Eglinton office. Her warm personality and efficient manner make each trip to the dental office a pleasant one.
Shawna Orzech
Marketing Manager
Shawna has an extensive marketing and communications and project management background that is a true asset to our busy dental practice. She earned an Honours Communications BA Degree Arts from York University and has worked in a variety of marketing and project management positions within various business segments such as Retail Banking, Non-Profit Fundraising, Commercial Sales Development, and Interior Design. Shawna enjoys public relations initiatives and the management of sponsorship promotions. She is a vibrant addition to our dental team.
Claudia Zuniga
Danforth Office Administrator
Claudia is an efficient and valuable asset to our dental team. Her extensive business administration experience in the dental profession has contributed greatly to the overall management and productivity of the practice. She continues to tackle new challenges with enthusiasm, kindness and respect making her a great addition to our office.
Sara
Eglinton Office
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