Our Team

DR. TERRY CIOMYK | Thornhill Family Dentistry


Dr. Terry Ciomyk is a 1989 graduate of the University of Toronto, Faculty of Dentistry. He practiced in the Yonge-Eglinton area of Toronto for eight years prior to moving to Thornhill in 1996. He enjoys practicing close to beautiful historic Thornhill and is often seen taking lunch-time walks around the scenic neighbourhood. Dr. Ciomyk is committed to professional development and excellence in all facets of dentistry. He has amassed over a thousand hours of continuing education throughout his career and has completed advanced post graduate training at the world-renowned Pankey Institute. He is a member of the Toronto Crown and Bridge Study Club, and has been a lifetime member of both the Ontario Dental Association and the Canadian Dental Association. He enjoys sharing his knowledge with students who have an interest in Dentistry. He is a Co-operative teaching participant with the York Region District School Boards and has provided co-operative learning opportunities to graduates of Dental Assistant College. Dr. Ciomyk enjoys spending time with his family and keeping up with his two energetic daughters and his dog Pickles.


Doctor Ciomyk is a member of the follow associations:

  • L.D Pankey Alumni Association
  • Canadian Dental Association
  • Ontario Dental Association
  • Royal College of Dental Surgeons of Ontario

DR. DAVID MCDOWELL | Thornhill Family Dentistry


Dr. David McDowell is a 1981 graduate of the University of Western Ontario Faculty of
Dentistry. He practiced for five years in the Yonge and Finch area of Toronto before moving to
Thornhill. Dr. McDowell feels honoured to have served the Thornhill community for over 30
years. Dr. McDowell is a member of the Toronto Crown and Bridge Study Club, the Ontario
Dental Association, and the Canadian Dental Association. He enjoys continuing education in all
facets of dentistry. He prides himself on his caring and compassionate treatment of his
patients. Dr. McDowell is devoted to his wife and three children and is the proud owner of
three cats and a dog. He loves sports and music in his spare time.

DR. SUSIE ANG | Thornhill Family Dentistry


Dr. Susie Ang is a 1989 graduate of the University of Toronto, Faculty of Dentistry and a former classmate of Dr. Terry Ciomyk. She is excited to be joining Dr. Ciomyk’s practice after having worked in another dental practice in the Highways 7 & 404 area for the past 26 years.

Dr. Ang is a lifelong learner who is committed to professional development and devoted to achieving excellence in cosmetic and restorative dentistry. She has completed a postgraduate program in Esthetic Dentistry at the State University of New York at Buffalo, an advanced education course in the diagnosis and treatment of the masticatory system with Dr. Peter Dawson and courses in orthodontics, TMJ and sleep apnea at the world renowned Pankey Institute.

Dr. Ang is a fellow of the American Society of Dental Aesthetics and the International Academy of Dentofacial Aesthetics. She is a member of the American Academy of Craniofacial Pain, the Academy of General Dentistry, the Ontario Dental Association and the Toronto Crown and Bridge Study Club. Dr. Ang enjoys helping patients of all ages achieve exceptional dental health and the best possible smile. She takes a holistic approach to dental care and aims to provide treatments that are good for total wellness.

Dr. Ang loves to travel, and enjoys music, fitness and reading in her spare time. You can visit www.drsusieang.com for more information about Dr. Ang.


TAMEE | Thornhill Family Dentistry


Tamee who has been with Dr. Ciomyk since 1999 and serves as the Office Manager, graduated from the Toronto School of Business in 1997 as a dental assistant. Her duties include scheduling, discussing dental treatments with patients, dealing with insurance companies, answering phones, and assisting Dr. Ciomyk. The best part of working at Thornhill Family Dentistry, according to Tamee, is meeting new people and ensuring that they have a pleasant experience. Tamee lives in Richmond Hill with her family. In her spare time, she enjoys watching her son, Matthew play baseball, walking her fur baby named Toby, and volunteering her time with a dog rescue organization that she co-founded.

DEE | Thornhill Family Dentistry


Dee joined Thornhill Family Dentistry in 2001, shortly after graduating from the Toronto School of Business Dental Assistant program. Her duties include chairside assisting, taking x-rays, and inventory control. Her favourite part of dentistry is watching Dr. Ciomyk change smiles. Dee lives in Scarborough with her family. She enjoys cooking, fishing, dancing and gardening.

JAMES | Thornhill Family Dentistry


James joined Dr. Ciomyk’s practice in 2003 as a part time dental hygienist. He is a graduate of the University of Toronto – Health Sciences and the George Brown Dental Hygiene Program. As a health care professional, he is committed to client focused care. He also has a wide knowledge base in health promotion through his work with the Region of Peel public health programs. James lives in Etobicoke with his wife and two daughters. He enjoys catching a good movie, camping and traveling with friends and family.

LORI | Thornhill Family Dentistry


Lori joined Dr. Ciomyk’s practice in 2007 as the practice expanded. In 1996, Lori graduated from the Birmingham Dental Hospital as a dental hygienist. She is very friendly and tries to make everyone’s dental visit a pleasant and relaxed experience. She is an ambitious dental hygienist who is always looking to enhance her knowledge and share it with others. Lori is a very busy mom of 2 boys, Julian and Cristian.

JANICE | Thornhill Family Dentistry


Janice began working at Thornhill Family Dentistry in 2015 as Dr. McDowell’s receptionist and has continued in that role ever since. Since 2017, she has also been working alongside Dr. Ang initially as a chairside assistant and then as her receptionist. When not at the office, she enjoys spending her spare time at her trailer
and travelling around the world. Janice lives in Markham with her dogs, Bailey and Buddy.

AN | Thornhill Family Dentistry


An joined the practice in 2015, having completed the Dental Assisting Program at George
Brown College in 2014. An enjoys her work as a dental assistant and spends most of her time as
a chairside assistant to Dr. McDowell. Since 2017, she has also worked chairside with Dr. Ang.
An lives in North York with her husband and her rescued dog, Frida. She enjoys travelling and
gardening in her spare time.

Thornhill Family Dentistry | Our Team | Kanesha


Kenesha joined the practice right after graduating from the Medix College in December 2020. Her duties include working chairside with Dr. Ang and Dr. McDowell, taking X-rays and helping to keep patients comfortable during their visit. Although she is new to the profession, she has thus far found working in a dental practice to be a great experience. She worked as a trained Mathematics and Science teacher before becoming a Dental Assistant so she is always happy to work with patients, especially children. Kenesha lives in Richmond Hill with her husband and enjoys doing makeup and listening to music.

LISA | Thornhill Family Dentistry


Lisa joined the team at Thornhill Family Dentistry in June 2017 bringing over 20 years of experience as a dental hygienist. She enjoys being involved in all aspects of the dental experience and is committed to ensuring her patients feel at ease. Lisa strives to maintain a comfortable environment while providing comprehensive, tailored care. In her spare time, Lisa enjoys spending time at the cottage with her husband and three sons.

LISA | Thornhill Family Dentistry


Donny was hired to the practice in 2019 to help out on the busiest days of the week. His responsibilities include front desk work, inventory, sterilization and laboratory work. He trained and worked as a dentist in India prior to immigrating to Canada. Currently, he is working towards becoming certified to work as a dentist in Canada. Donny lives in North York with his wife and two children. He is a huge military aviation fan and enjoys travelling, biking and going to the beach. Donny’s family, work and studies keep him very busy but if he had any spare time, he would love to be a couch potato and watch movies and tv shows!


(905) 731-8220
905) 731-8249

Mailing Address
7-7787 Yonge Street
Thornhill, ON
L3T 7L2

Google Reviews- Thornhill Family Dentistry


Monday: 8:00 am - 5:00 pm
Tuesday: 8:00 am - 5:00 pm
Wednesday: 8:00 am - 6:00 pm
Thursday: 8:00 am - 5:00 pm
Friday: 8:00 am - 3:00 pm
Saturday: 8:00 am - 2:00 pm
Sunday: Closed

Ontario Dental Association Member | Thornhill Family Dentistry


  • Same-day emergency care
  • Wheelchair Accessible
  • We accept most insurance plans
  • Electronic Insurance Billing
  • Patient Financing Available
  • Flexible payment options
  • Most insurance plans accepted
  • Evening & weekend appointments
  • Free Parking Available