Meet the Dentists

We offer a full range of general, cosmetic, and specialty dental services under one roof. We always warmly welcome new patients to our practice and we’re open 7 days a week!

Dr. Adriana Sopruniuk

Dr. Adriana Sopruniuk was born and raised in Edmonton, Alberta and attended the University of Alberta, graduating with both her Bachelor of Science and Doctor of Dental Surgery degrees. She is fluent in Polish and Ukrainian.

Dr. Sopruniuk is a member of the Calgary and District Dental Society, Alberta Dental Association and College and the Canadian Dental Association.

When she isn’t working, Dr. Sopruniuk is driving her two children to hockey, soccer and piano lessons. She also enjoys travelling, reading, golfing and running.

Dr. Meggan Schiffner

Dr. Schiffner’s passion in dentistry is treating families and developing a lasting relationship centred around her patients’ comprehensive dental health with a focus on prevention and education, starting at a patient’s young age of 1.

She enjoys all aspects of general dentistry and is specifically experienced in children’s dentistry, crowns, bridges, fillings, sedation dentistry, and Invisalign®.

Dr. Schiffner became a member of the Calgary District and Dental society last year. She was elected as an executive member and was re-elected this year. She appreciates the opportunity to continue to learn about the latest trends in dentistry and connect with her peers.

She participates in outreach and speaking, as well as educating children in our local Calgary schools. She also works with mom’s groups, discussing healthy habits for expecting and new moms, along with their newborns.

Dr. Schiffner grew up in a small town in Northern California. She went to college in San Diego, where she completed her B.S. in Biology. For dental school, she attended the University of the Pacific, Arthur A. Dugoni School of Dentistry, in San Francisco. She then moved to Dallas, Texas, where she practiced general dentistry before she moved to Calgary to be with her husband.

In her free time, Dr. Schiffner enjoys spending time with her husband and son, exploring what Calgary has to offer. She also enjoys travelling; her most recent trips have been to St. Lucia, Egypt, Australia and Costa Rica.

Dr. Jessica Thomas

Dr. Jessica Thomas wanted to be a dentist from a young age and continues to enjoy learning more about her chosen field. While Dr. Thomas practices general dentistry, she has a particular interest in pediatrics, restorative, and cosmetic dentistry. She enjoys developing relationships and getting to know her patients. Through communication and sharing personal experiences, she endeavours to make a visit to the dentist less stressful. Every person is different, and Jessica appreciates each of her patients’ individualities. She makes every effort to provide a personalized approach to each of her patients.

Dr. Thomas was born and raised in Calgary but attended university in the United States, where she earned her BSc in Exercise Science. Upon completion of her undergraduate degree, she attended dental school at the University of Alberta, graduating with her DDS degree in 2006. She also shared her knowledge with others, while teaching at Dalhousie University School of Dentistry in Halifax, Nova Scotia.

Dr. Thomas has a number of interests and hobbies. She lives with her husband and two cats and enjoys time with them. She is also the oldest of six children and loves to spend time with her six nieces and eight nephews. Jessica plays the piano and is qualified to teach the Royal Conservatory piano curriculum. As an undergraduate and high school student, she taught piano lessons. Jessica also loves learning, music, reading, writing and other artistic pursuits like refinishing furniture.

Dr. Sonja Down

Dr. Sonja Down completed her Bachelor of Science and Doctor of Dental Surgery degrees in 2013 at Dalhousie University in Halifax, Nova Scotia. She practiced in Ottawa before moving to Calgary and joining the team at Sierra Dental. Dr. Down believes in building trusting relationships with her patients to create a comfortable environment and to help patients achieve and maintain their oral health for life. It is important to her that patients feel like their concerns have been heard and understood, and that they feel in control of their dental care. She provides a full scope of dental treatment, with special interest in sedation, restorative, pediatric and cosmetic dentistry. In her free time, Dr. Down’s interests include fitness, travelling and spending time with friends and family.

Dr. Ben Thomas

Dr. Ben Thomas was born in Calgary and raised in Crossfield, Alberta. After high school, he spent two years abroad before moving to the United States to pursue further education. He completed his undergraduate education at Brigham Young University, where he majored in Neuroscience and minored in French. He then earned his Doctor of Dental Surgery degree, Master of Public Health degree, and Specialty Certificate in Periodontics from the University of North Carolina. His training also included certification in Intravenous Sedation and Advanced Cardiac Life Support.

Dr. Thomas is a fellow of the Royal College of Dentists of Canada and an active member of numerous dental organizations and societies, including the American Academy of Periodontology, the Canadian Association of Periodontology, and the International Academy of Periodontology. As a trained periodontist, he specializes in the placement of dental implants and the management of the periodontal disease. This includes:

  • Limited or complete periodontal evaluation
  • Surgical and non-surgical periodontal therapy
  • Periodontal regeneration
  • Surgical implant placement
  • Ridge and sinus augmentation
  • Extractions and ridge preservations
  • Gingival grafting
  • Functional & Esthetic crown lengthening
  • Oral Pathology

Dr. Thomas is passionate about dental surgery and loves what he does. He is fluent in French and has provided dental services to underprivileged populations in Haiti, Mexico, Moldova, and Senegal. Despite his commitment to international humanitarian service, Dr. Thomas is happy to be home in Calgary and looks forward to putting down roots and building strong relations with his patients. When not at work, he enjoys spending time with his family, cooking for friends, and playing sports.

Dr. Poorvi Brahmania

Dr. Poorvi Brahmania was born and raised in Regina, Saskatchewan. She moved to Saskatoon, where she completed her Bachelor of Science in Anatomy and Cell Biology and subsequent Doctor of Dental Medicine at the University of Saskatchewan. She spent two years practising in her hometown prior to moving to Calgary.

Dr. Brahmania enjoys all aspects of dentistry, with a particular interest in pediatric, neuromuscular and cosmetic dentistry. While being an avid traveller, she also finds time to volunteer in underserved areas of the world, providing dental care. She is currently an active member of the Canadian Dental Association, Calgary Alberta Dental Association and College, and the Calgary & District Dental Society.

Along with travelling, Dr. Brahmania enjoys exercising, attending yoga classes, and trying the cuisine of different cultures.

Dr. Tom Shackleton

Dr. Shackleton graduated from Northwestern University Dental School and is a practicing General Dentist.

He is a member of The Alberta Dental Association & College and the Canadian Dental Association.

When not treating patients, Tom (as he prefers to be called) and his wife, Lori and busy with their four (mostly) grown children and their little puppy, Olive. He is an avid reader of most thing historical and is a bit of a sports fanatic, especially NCAA football (go Trojans and Wildcats!). He is equally happy going for a bike ride, doing a yoga class or enjoying a glass of wine with a friend.

Dr. Rod Herchak

Dr. Rod Herchak was born and raised in SW Calgary. He graduated from the University of Alberta Faculty of Dentistry in 1980. He has maintained a high-quality dental practice in SW Calgary for over 35 years. His interests include the Calgary Flames, the Toronto Blue Jays, fishing, history and cooking.

Dr. Mostafa Altalibi – Orthodontist

Dr. Altalibi received his D.M.D from the prestigious McGill University, graduating with the highest honour as the valedictorian of his class and having won numerous other awards including the American Association of Orthodontists Award.

Dr. Altalibi then dedicated the next year to working with disadvantaged and disabled kids at the Montreal Children’s Hospital. His growing interest in orthodontics led him to the University of Alberta to pursue his passion for orthodontics. There he completed a master’s degree and developed tools to help physicians and orthodontists treat obstructive sleep apnea in children.

Dr. Altalibi is currently involved in exciting research at the positive psychology institute at the University of Pennsylvania, to establish the means to boost his patient’s self-esteem throughout orthodontic treatment. He’s also an Assistant Clinical Professor at the University of Alberta Undergraduate Dental Clinic. He has published numerous research articles in respected scientific peer-reviewed journals on cleft lip and palate, surgical procedures, obstructive sleep apnea, and the new cone-beam tomography technology. Moreover, Dr. Altalibi is an examiner and fellow of the Royal College of Canada.

Outside of orthodontics, Dr. Altalibi enjoys healthy living, with an active lifestyle of travelling, camping, hiking, Cross Fit and yoga.

Prosthodontist Calgary - Dr. Ryan Keyes

Dr. Ryan Keyes – Prosthodontist

Dr. Ryan Keyes specializes in Prosthetic Dentistry at Sierra Dental. As a Board Certified Prosthodontist, Dr. Keyes can provide advanced and complex restorative & rehabilitative treatment options involving Crowns, Bridges, Veneers, Dentures, and Dental Implants focused on function and aesthetics.

Dr. Keyes is from Calgary. He is adventurous, enjoys travel and has sought unique opportunities for education around the world. After completing a Bachelors Degree in Science, Dr. Keyes then completed his dental training at USyd. Following Dental school, Dr. Keyes completed an additional 3 years of training focused specifically on the Specialty of Prosthetic Dentistry by completing a residency in Prosthetic Dentistry at UMN.

Dr. Keyes has completed Specialty level examination and Certification in Prosthodontics and is a Fellow with the Royal College of Dentists of Canada. Dr. Keyes is registered with the Alberta Dental Association and College, with practice focused on the Specialty of Prosthodontics.

Dr. Keyes enjoys teaching in the Dental field and has worked as an adjunct associate professor for the University of Minnesota School of Dentistry in the Department of Restorative Sciences. Also, Dr. Keyes maintains research interests at the University of Minnesota involving Dental Implants. Currently, Dr. Keyes is involved with local and international Dental study clubs and lectures as a Specialist in the field of Prosthetic Dentistry.

Dr. Keyes enjoys the lifestyle Alberta has to offer and can often be found snowboarding, mountain biking, hiking, camping, or wakeboarding.

Dr. Wes Prepchuk

Dr. Wes Prepchuk was born in Edmonton but grew up mostly in the Calgary area. He made the trek over to Sydney, Australia in 2005, accompanied by his wife and two little boys. Since then, they’ve added two more children to their family, including one very spoilt little girl.

Dr. Prepchuk holds bachelor degrees in Biochemistry from the University of Lethbridge, Canada and in Dentistry from the University of Sydney, Australia.

Dr. Prepchuk believes in the importance of offering a complete range of services to his patients. Dr. Prepchuk has yet to discover an aspect of dentistry that he doesn’t enjoy. He loves the interaction with people, the intricately detailed work, and the active learning environment that dentistry provides.

After 14 years of practicing dentistry in Australia, Dr. Prepchuk and his now-grown family have moved back home to Calgary to settle, trading the sunny beaches and kangaroos of Australia for the snowy mountains and grizzly bears of Canada.

Dr. Tiffany Chen

Dr. Tiffany Chen is originally from Taiwan, she is fluent in English, Mandarin, and Taiwanese. She lived in South Africa for 12 years where she received her dental qualification in 2006, from the University of Witwatersrand, Johannesburg. She then spent the next 12 years practicing dentistry back in her home country, Taiwan for another 12 years before moving here to Calgary.

Ever since she was small, Dr. Tiffany loves art and doing delicate handcrafts. She was the diligent girl who is obsessed with drawing inside the lines. Her love to work with her hands and interact with people steered her right into the career of dentistry. She enjoys all aspects of dentistry, with special interests in root canal treatments, extractions, and orthodontics.

Dr. Tiffany likes to think that being an amateur triathlete has helped her to achieve her goals in life. The sport taught her the positive motivation and perseverance required to attain her Canadian dental certification through the challenging equivalency process.

When she is not practicing dentistry or training for her next race, Tiffany loves to travel, or explore the world of Netflix in the comfort of her own home.

Dr. Sukhman Chahal, DMD, FRCD(C)

Sukhman Chahal is a Canadian board certified endodontist.
Dr. Chahal was born and raised Calgarian and has called Calgary home for the majority of his life. Dr. Chahal completed his dental education at Tufts University in 2008, a GPR at the University of Texas Health Sciences Center in San Antonio ( UTHSCSA) in 2009, and his endodontic training at the University of Southern California in 2015.

Prior to pursuing the endodontic specialty, Dr. Chahal was a general dentist for three years in Airdrie, AB. His experience as a general dentist has allowed him as a specialist to understand and value the relationship between the referring doctor and endodontist.

Patient satisfaction is one of Dr. Chahal’s priorities. As we all know endodontic emergencies are common place and usually happen at inconvenient times. Dr. Chahal is more than happy to work with patients in terms of flexible scheduling and treating them short notice. He strives for safe, reliable treatment, and make every effort to have patients as comfortable as possible during endodontic procedures.

Dr. Chahal is always available to talk and collaborate with you regarding complex patients and treatment plans. Once the endodontic treatment is completed, a report regarding the patient’s therapy will be sent in a timely manner, and the patient will be referred back to your office for restorative treatment.

In his spare time, him and his wife enjoy exploring the amazing outdoors Southern Alberta has to offer, catching the latest movie, and trying new and interesting cuisine.

“I look forward to meeting with you soon, and be a partner in the care of your patient’s endodontic needs”.

Meet the Hygienists

Alexa

Alexa was born and raised in Manitoba. She graduated from the University of Manitoba’s School of Dental Hygiene and was awarded the Endowment Fund Award in Dental Hygiene as well as was inducted into the Sigma Phi Alpha Society for Dental Hygiene. A very positive experience at the dental office when Alexa was a child, lead her to pursue a career in dental hygiene. She has a passion to help others in any way she can while striving for excellence. Alexa spends all her spare time outdoors, which is what lead her to Calgary. Fishing, camping and the mountains are what Alexa enjoys most.

Amanda

Amanda has been practicing dental hygiene since 2009. She graduated from the Toronto College of Dental Hygiene and joined the Sierra Dental family shortly after. Amanda loves working with a wonderful team to provide optimal oral health care to her patients.
In her spare time, she enjoys keeping active and has a passion for health and exercise. She loves spending time with her family and travelling.

Carolyn

Carolyn graduated Dental Hygiene from the University of Alberta and joined Sierra Dental in 2003. She loves spending time with family and friends. Carolyn is always up for a new adventure! She enjoys taking road trips, camping, horseback riding, hiking, and anything that gets her out in nature.

Diane

Diane was born and raised in Southern Ontario and comes from a very large Vietnamese family with Vietnamese being her first language. Growing up she always wanted to work in healthcare to help other people live a healthier life. Diane graduated Dental Assisting from Niagara College in 2011 then graduated from dental hygiene school in 2013. After graduation, she worked as a dental hygienist in Ontario and then joined Sierra Dental in 2014.

In her spare time, Diane loves spending time with family and friends. She enjoys travelling, boating and white water rafting. Diane loves adrenaline activities and has tried sky diving and cliff jumping. Since moving to Calgary she has become a committed Flames fan…. Go Flames Go!

Happy

Happy was born in the Philippines and grew up in Saskatchewan and Alberta. She went to S.I.A.S.T. Wascana Campus in Regina for both Dental Assisting and Dental Hygiene Programs. She joined Sierra as a Dental Assistant in 2005 and became one of our fabulous hygienists in 2011. Happy loves working with the Sierra team and loves having the ability to work in a practice with cutting edge technology so she can be a part of providing patients with the best dental care imaginable.

In her spare time, she loves spending time with her husband, two daughters and dog, Molly. She enjoys travelling, cooking, playing guitar, and anything that takes her outdoors!

Liisa

Liisa has been practicing dental hygiene since 2006, graduating from SIAST, Saskatchewan Institute of Applied Science and Technology, with honours, including the Governor Generals Award, and the Golden Scaler Award.

Liisa enjoys working with such an amazing dedicated team, here at Sierra Dental!

Lindsay

Lindsay was born and raised in Calgary Alberta and graduated as a Registered Dental Hygienist from the Toronto College of Dental Hygiene. She has worked at Sierra Dental since 2006, starting first as a registered dental assistant and then returning after school as a registered dental hygienist 2009. Lindsay’s main focus is in the prevention and educating her clients on great oral health, she enjoys developing relationships and getting to know her patients.

In her spare time, she enjoys spending time with her husband, son, family and friends. She enjoys living a healthy lifestyle biking, hiking, skiing in the winter and travelling the world!

Lisa

Lisa was born and raised in Okotoks and still presently lives there with her husband and daughter. After having braces at a young age, Lisa became very interested in dentistry and pursed her Dental Assisting education at SAIT. She began working at Sierra Dental in 2005 as a dental assistant. She then returned to school for Dental Hygiene at Toronto College of Dental Hygiene & Aux. and has been working as a dedicated hygienist ever since. She enjoys helping her patients to exceed optimum oral health while making them feel comfortable and safe with her gentle touch.

In her free time, she enjoys spending time with her husband and daughter at their lake view property camping, boating and visiting with family and friends. They also love to travel to hot destinations and make the most of life!!

Manjot

Manjot graduated from the University of Alberta dental hygiene program in 2016 with honours. She later returned to the University of Alberta to complete her baccalaureate degree specializing in dental hygiene. Upon completion of her degree, she was awarded the College of Registered Dental Hygienists of Alberta Gold Medal due to outstanding academic achievement.
Manjot enjoys creating meaningful relationships with her patients and making positive differences in their oral health. She strives to provide each client with a unique and tailored experience by listening and adapting to each patient’s needs and concerns.

In her spare time, Manjot enjoys the outdoors and staying active. She feels grateful to live close to the Rockies and frequently visits the mountains to hike and enjoy the scenery. She also enjoys playing various sports some of which include soccer, basketball, badminton and volleyball. Manjot is very thankful for her large East Indian family and spends any remaining time with them.

Nina

Nina was born and raised in Calgary, coming from a large Italian family. She has been interested in dentistry from a young age, leading her to complete her Dental Assisting Certificate at SAIT in 2010. She decided to further her knowledge and obtained her Dental Hygiene Diploma at the University of Alberta in 2015. She believes that having a trusting relationship with her patients is key to achieving their optimal oral health. Building these relationships with her patients is one of her favourite aspects of being a dental hygienist.

Nina loves to spend time with her partner Duncan and their Boston Terrier named Bruin. She also enjoys travel, fitness, trying new restaurants and hanging out with her family and friends.

Paula

Paula joined Sierra Dental in April 2017. She was born and raised in Bogota, Colombia, where she received her dentistry degree, and moved to Canada in 2008. Shortly after, Paula obtained her Dental Assisting Certificate at Columbia College in Calgary and began working consistently in maintaining high and current standards in her professional development. After dedicating four years in the dental field, Paula decided to pursue a dental hygiene career. She received her dental hygiene diploma from The Canadian Academy of Dental Health and Community Sciences in Mississauga, ON and has developed a strong passion for preventative care therapies that motivates her patients to maintain optimal oral health. Paula is bilingual in both English and Spanish, and during her free time, she enjoys sharing a good meal and spending quality time with her family.

Veronica

Veronica graduated with honours from Regency Dental Hygiene Academy in Toronto in 2012 and was awarded the Clinical Excellence Award for her graduating class. She joined the Sierra team shortly after in 2012. Veronica was born and raised on a farm outside of Stettler, AB. She has always had a passion for helping and working with others, which is what initially drew her to the dental profession and has sustained her passion for the field ever since. Veronica received her Dental Assisting Certificate in 2006 from NAIT and her love for the dental profession only grew from there. Veronica loves creating long-lasting and trusting relationships with her patients and helping to achieve not just optimal oral health, but overall health and well-being as well.

In her spare time, Veronica enjoys spending time with her puppy Bubba, yoga, camping, hiking, travelling, teaching hula hoop classes and spoiling her nieces and nephews.

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