Meet the Team
Our exceptional, friendly team is our greatest asset. We are excited about what we are doing, and we are motivated to achieve the best results for our family of patients.
The Doctors
Dr. Jeff DiefenbacherDDS
I am a graduate of the University of Toronto, receiving my Doctorate of Dental Surgery - Class of 95. I was the recipient of the Colgate - Palmolive Scholarship for Excellence in Preventive Dentistry, the S.A MacGregor Award for Paediatric Dentistry, and the Keith Box Gold Medal for Periodontics.
Upon graduating, I joined my father in private practice, and I had the pleasure of working with him for 2 years, at which time he retired after 43 years of dentistry in the KW Region.
I am passionate about continuing education, which helps me stay current in my private practice. I am an elected member of the Ontario Dental Association's Education Advisory Committee, whose prime directive is to provide continuing education for dentists and their teams. As such, I get to travel to conventions throughout North America, looking for new speakers to bring back to give lectures in Ontario.
Outside of the office, my wonderful family keeps me very busy. Our 3 kids are involved with a number of activities and there are a lot of days where we have to divide and conquer. We intentionally do not enroll our kids in any extracurriculars through the summer months so we can spend as much time at the cottage on Georgian Bay as a complete family unit as possible.
I have a deep connection to the KW community, being born and raised here. In addition to supporting my wife’s philanthropic activities, I play an active roll coaching a girl’s hockey team. Our office sponsors our children’s hockey/ ringette teams, and we also choose to sponsor one other sports team during the winter and summer months. I am passionate about supporting the arts in our community. We are longtime supporters of the Black and Gold fundraiser for the KW Art Gallery, as well as Corporate Sponsors of the talented KW Symphony.
I was honoured by the Ontario Dental Association with a Merit Award acknowledging my contributions to the Profession of Dentistry. I was also awarded a Fellowship in the Pierre Fauchard Academy.
Memberships and Associations
- Canadian Dental Association
- Ontario Dental Association
- Royal College of Dental Surgeons of Ontario
- Chicago Dental Society
- Past President of the Waterloo Wellington Dental Society
- Completed a 6 year term on the ODA General Council
- Past Chair of the ODA Membership Services Core Committee
- Past Member of the ODA Oral Health Strategy Advisory Committee
- Member of the ODA Education Core Committee
Dr Jackie SieberDDS
Jackie is a graduate of the University of Waterloo with a Bachelor of Science in Health Sciences, followed by a Doctorate of Dental Surgery from the University of Toronto in 1997. She was a recipient of several awards including the Keith Box Gold Medal for Periodontics. She particularly enjoys oral pathology and microbiology.
The rapid changes in dental technology have kept her passion for her career ignited, especially with the positive difference she can bring to many through Invisalign, clear aligner therapy. Jackie enjoys staying current with her practice through continuing education, by attending conferences and listening to webinars. She puts a lot of effort into keeping the office patient-friendly through design (yes our water cups must match the office colour scheme!) down to the careful magazine selection (boasting a very current and broad collection!)
Jackie doesn't like sitting still, so she packs a lot of things into her free time away from the office. Having three kids keeps her on her toes, especially in her second career, as their Uber driver! She never thought she would enjoy being at the rink as much as she does, and no, she will not admit whether she likes ringette or hockey better! Jackie enjoys cooking, travelling, SUP and tennis. She is a proud volunteer for many charitable organizations and truly loves being involved with community-wide fundraisers that raise money for local hospitals, and mental health organizations.
Recently the office has initiated two large philanthropic enterprises including The Belmont Vibe for the Child Witness Centre, as well as Old Bags of Westmount, with proceeds going to HopeSpring. Jackie has been involved with Health Outreach by completing a dental mission in Guatemala. This experience certainly provided her with a new perspective on the basic needs missing in the lives of many children around the world! She was honoured to be the recipient of the Ontario Dental Association’s Award of Merit. Finally, and most importantly, Jackie would like to thank her parents Bev and Joe Sieber for their support in allowing her to achieve her dreams. Love you.
Memberships and Associations
- Canadian Dental Association
- Ontario Dental Association
- Waterloo Wellington Dental Society
- Chicago Dental Society
- American Dental Association
- Royal College of Dental Surgeons of Ontario
- Invisalign Preferred Provider
- Past President of the Academy of General Dentistry Intercounty Study Club
- Past President of the Waterloo Wellington Dental Society
- Former Ontario Dental Association Councillor
- Current Mediations Chair for Ontario Dental Association for WWDS
Dr. Abby DonovanDDS
I graduated from the University of Guelph in 2007 with a Bachelor of Science in Biological Science and received my Doctor of Dental Surgery Degree from the University of Western Ontario in 2011. While in Dental School, I travelled to Tanzania with MedOutreach - a student run organization at UWO that provides dental screenings and treatment to those in need in Tanzania. This is something I aspire to do again in the future.
I was born and raised in Kitchener and am proud to be living and practicing in the KW area. I feel passionate about this community and strive to give back through fundraising and volunteering and is why I'm the Co-Chair for The Belmont Vibe in support of the Child Witness Centre.
My husband Josh and I recently welcomed our son, Harvey. In my spare time I enjoy cooking, skiing, practicing yoga, and spending time at home with my family.
Memberships and Associations
- Past President of Waterloo Wellington Dental Society
- ODA Member
- Member of RCDSO
- Member of Waterloo Wellington Dental Society
- Member of Canadian Dental Association
- Member of Academy of General Dentistry
- Invisalign Preferred Provider
Meet Our Team
Aneta
Dental Assistant
Anita
Administrative Assistant
Daphne
Dental Assistant
Enoe
Dental Hygienist
Heidi
Dental Hygienist
Jen
Dental Hygienist
Karen
Dental Hygienist
Kelly
Administrative Assistant
Paige
Dental Assistant
Sarah
Dental Assistant
Sarah
Restorative Dental Hygienist
Tasha
Dental Hygienist
Teaha
Dental Hygienist
Tracy
Administrative Assistant
Samantha
Dental Hygienist
Carla
Dental Hygienist
Aneta
Dental Assistant
Aneta graduated Career Canada CDA Level I in 1991 and has been assisting with Dr. Sieber since 2002. She graduated from Medix College CDA Level II in 2012, and is HARP Certified. She is a true soccer mom and loves cheering her son on.
She also enjoys traveling, walking and listening to music.
Daphne
Dental Assistant
Daphne was born and raised in Kitchener, and now currently lives in Baden with her husband, two children and three morkie puppies. As a child, she had crooked teeth and it was at that point in her life that she realized she wanted to work in the dental field. She wanted to make others feel the same way she did when she had her braces removed!
Daphne has been working as a Certified Dental Assistant Level II since 2008, after graduating from Everest College, since then, she's become HARP certified and a member of the Ontario Dental Assistants Association. In 2018, Daphne joined the team as an Infection Control Manager/Health and Safety Representative. With this position she regularly participates in continuing education courses and seminars in order to keep current with new standards and regulations in the dental field. She is always looking to learn new things and help the team grow and become stronger.
In her spare time, Daphne enjoys watching her children's horseback riding lessons, snuggling, playing with her three puppies and spending quality time with her husband.
Enoe
Dental Hygienist
Enoe graduated from the dental hygiene program in 2017 from Fanshawe with honours, where she was also the recipient of the Personal Achievement Award. Enoe hopes to expand her knowledge and continue to grow within her dental hygiene profession through continued education. She is dedicated to providing excellent oral hygiene care in a gentle and efficient manner.
Born in Nicaragua, Enoe is able to speak, read and write in Spanish! Outside of work she likes to spend her time with her dog Rufus and her husband. She enjoys weight training, yoga, spinning and spending time outside with friends and family during the summer months!
Heidi
Dental Hygienist
Heidi has been working as a dental hygienist since 2003, following her graduation from Niagara College of Applied Arts and Technology. Prior to her dental hygiene education, she obtained her Bachelor of Science degree from the University of Waterloo. Heidi likes getting to know each patient on a personal level and strives to ensure a positive dental experience.
When not at work, she loves spending time with her family and friends, reading, staying active, patio season and all things outdoors!
Karen
Dental Hygienist
Karen graduated from the Ontario Dental College as a certified dental assistant in 1993 and worked as a certified dental assistant for 5 years, before returning to school for dental hygiene. In 2000, she graduated from the dental hygiene program at Niagara College, and has been working as a dental hygienist since 2000. She joined the Dr. Diefenbacher Donovan Sieber Dental practice in 2015.
In her spare time Karen enjoys physical activity, "Glamping", spending time with her family and being a hockey mom!
Paige
Dental Assistant
Paige has been a part of the DDS Dental team since 2015, after graduating from Medix College as an IODAII and the valedictorian of her class. Her interest in dentistry sparked with the help of her childhood dentist and her orthodontist. Paige's favourite part of being a dental assistant is seeing the before and after results of her orthodontic and Invisalign patients. Paige continues to take part in continuing education to continue to be a part of the Ontario Dental Assistant's Association.
Paige grew up horseback riding at a national level, and this extra curricular continues to be a big part of her life. When she isn't at the office, she's usually at the barn riding or teaching riding lessons. In her spare time, she enjoys staying active, spending time with family and friends, shopping and traveling.
Sarah
Dental Assistant
Sarah grew up in New Dundee and currently lives in New Hamburg with her husband, chocolate lab and they're expecting their first child in June 2019. She has been a patient of Dr. Diefenbacher's practice of all her life and even had her highschool co-op term at the practice. She joined the practice in 2007, after graduating from George Brown College. She is HARP certified and later, graduated from Medix School level II Dental Assisting. Sarah has been given many great opportunities, she travelled to Guatamala and volunteered with Health Outreach three times in the past 6 years with both Dr. Sieber and Dr. Diefenbacher and most recently with her husband, where they provided dental care to the local children.
Sarah loves the outdoors, enjoys road cycling, volleyball, shopping, traveling, spending time at her cottage and taking long walks with her dog.
Sarah
Restorative Dental Hygienist
- Graduated with honours from George Brown College Restorative Dental Hygiene Program in 2011
- Graduated from Fanshawe College Dental Hygiene Program in 1999
- Graduated from Fanshawe College Dental Assisting Program in 1997
Sarah has been working with Dr. Diefenbacher since September 2000. She has over 15 years experience in providing both dental hygiene and orthodontic (braces) services to her clients. This progressive setting allows her to care for the health of her client's teeth and gums. She utilizes her orthodontic and restorative dental hygiene training to improve esthetics and provide a beautiful, healthy and natural looking smile for every one of her clients. Sarah shows a strong commitment to continuing education and is constantly updating her skills to provide the most current evidence-based and recommended therapies available.
In her spare time she enjoys running, hot yoga and spending time with her husband and 2 adorable children.
Tasha
Dental Hygienist
Tasha started in the dental field as a receptionist and a dental assistant after graduating from Fanshaw College in 2009. She was an assistant for 6 years before returning to school to become a dental hygienist and graduated from Georgian College in 2018. She has been a part of the Diefenbacher Donovan Sieber team since July 2018.
Outside of work, Tasha enjoys anything outdoors in the sunshine.
Teaha
Dental Hygienist
Teaha began her career in the field of dentistry over twelve years ago. She started as a Level II dental assistant and then shortly after, returned to Fanshawe College to continue pursuing her goal of becoming a registered dental hygienist. Teaha takes pride in keeping her skills up to date in order to educate and deliver personalized care to each patient, in accordance to the hygienist standards of practice. As part of her job, she loves being able to interact with her patients, make them feel relaxed and comfortable during their appointment.
Outside of work, Teaha loves spending quality time with her husband and two daughters. They enjoy camping and afternoons at the park.
Tracy
Administrative Assistant
Tracy graduated from the Dental Assistant program at Fanshawe College. She has worked in various specialty dental practices in the area as a dental assistant and dental receptionist, and has gained over 24 years experience in the dental field. Dr. Sieber had been her family dentist for many years and as a result, was very excited to join the practice in October 2017 as a part-time receptionist. She thoroughly enjoys interacting with the practice's wonderful patients and helping them with their appointments.
Tracy lives in Waterloo with her husband, two children and dog. She enjoys traveling and spending time with her family.