Creekside Dental Clinic

A graduate of the University of Saskatchewan in 2000 with Distinction, Dr. Onishenko, who was born and raised in Saskatoon, spent the first five years of private practice in Edmonton before moving to Calgary in 2005. There he opened 2 practices in 2006 and 2008 and continued to call Calgary home until 2016, when his family decided to relocate to Kelowna. Having completed extensive training in the placement and restoration of dental implants, bone grafting procedures, Invisalign clear orthodontics, and smile rejuvenation procedures, he is committed to providing all patients with the most comprehensive treatment plans available, through a dedication to superior continuing education and ongoing training in various aspects of dentistry.

His passion for the field of dentistry is matched by his love of the outdoors and of course, his family. When not helping patients, Dr. Onishenko, his wife Nicole, and their three children Layne, Nixon, and Quinn enjoy spending time on their boat and at their cabin, traveling, and participating in various activities both in the mountains and on the water.

Greg is originally from the east coast of Canada, where he grew up in Fredericton, New Brunswick. Greg attended the University of New Brunswick where he obtained his Bachelor of Science with honors in biochemistry. He also played lacrosse with the UNB Generals throughout his undergraduate time. He then moved to Halifax, Nova Scotia where he obtained his Doctor of Dental Surgery degree at Dalhousie University. Upon graduation, his education continued as he was accepted to the General Practice Residency (GPR) program at the University of British Columbia based in the Vancouver General Hospital.

Internationally Greg has worked in Vietnam and Cambodia. Vietnam was a mixture of hospital based oral surgery at the National Hospital of Odontostomatology and the care of a population of children from various orphanages throughout Vietnam. Cambodia was strictly pediatric treatment within the hospital setting in the Angkor Children’s Hospital in Siem Reap.

Through these experiences Greg has developed a keen interest in oral surgery. He also gained certification through the Vancouver General Hospital to provide conscious intravenous sedation for his patients. During his residency Greg often worked with medically compromised and highly anxious patients. This has allowed him to develop a very patient centered approach to comprehensive dental care and he enjoys all aspects of general dentistry.

Greg spends much of his free time pursuing continuing education and routinely triples the provincial licensing requirements. It is very important to him to stay up to date on current techniques to provide the best standard of care to his patients. Outside of dentistry Greg’s interests include travelling and a love for the outdoors – namely golf and skiing tend to take up a good portion of his free time.

Professional Distinction

• Accreditation for Intravenous Sedation, University of British Columbia, 2013
• Completion of General Practice Residency, University of British Columbia and Vancouver General Hospital 2013
• Graduated from Dalhousie University in Halifax, Nova Scotia in 2012

I graduated from the College of Dentistry at the University of Saskatchewan in 1991 and worked as an associate in Saskatoon for one year before moving to Kelowna in 1992.  I helped establish Creekside Dental Clinic in Kelowna and have practiced there ever since.

I received my accreditation for Intravenous Sedation in 2006 at Portland State University in Oregon. I maintain a general dentistry practice that includes the placement and restoration of dental implants.

I completed my training from PTIFA in 2008 that allows me to provide Botox injections for the purposes of facial esthetics and rejuvenation.

Away from the office I enjoy trail running, hiking and golfing.  Foreign travel and exploring different cultures with my wife and family is also a passion.

Professional Distinction
•College of Dentistry, University of Saskatchewan, 1991
•Accreditation for Intravenous Sedation, Portland State University, Oregon, 2006
•Accreditation for Botox Cosmetic, PTIFA, 2008

Dr. Marissa Multari is originally from Nova Scotia, but spent her younger years in Ontario. After growing up in Windsor, she attended the University of Guelph where she achieved her Bachelor of Science in Human Kinetics. Marissa then returned to the East Coast to obtain her Doctor of Dental Surgery Degree at Dalhousie University. During this time, she also completed an elective in oral surgery and received an award for her interest and proficiency in hospital dentistry. While completing her studies, she represented the Faculty of Dentistry in the university senate as well as the Dalhousie Student Union.

Following graduation, she was accepted into a General Practice Residency (GPR) program at the University of Alberta in Edmonton. Through this experience she achieved her Conscious Intravenous Sedation, Nitrous Oxide Sedation, and Oral Sedation Certifications. The program also provided her with additional training in oral surgery, emergency dental care, and working with medically compromised patients in a hospital setting.

Marissa has enjoyed living in different provinces across Canada and experiencing their cultures first hand. She is excited to be living in Kelowna and outside of work can be found with her fiancé and their adopted dog “Jasper” – named after their love of Jasper National Park. She is currently working toward training Jasper to become a therapy dog for the elderly and children. Other interests of hers include: photography, hiking, exploring the outdoors, and playing hockey.

Born and raised in Regina, Saskatchewan, Dr. Kelsey Morhun moved to Kelowna in 2009. She began her undergraduate studies at UBC Okanagan, where worked towards a Bachelor of Science degree in Microbiology. After her third year, she was accepted in the Doctor of Dental Medicine program at UBC Vancouver.

During her time at UBC, Kelsey received the American College of Dentists (BC Section) Award in Ethics and Professionalism, the Dental Undergraduate Society Award, the Quintessence Award for Clinical Achievement in Periodontics, and the Thompson Okanagan Dental Society Scholarship. In her final year of study, she participated in the Student Mentor Program where she helped supervise and mentor younger colleagues at UBC.

Although Kelsey enjoyed her 4 years spent on the beautiful West Coast, she is excited to be back home in the Okanagan practicing dentistry at the clinic she once was a patient at.

Kelsey is passionate about helping others and is looking forward to building lasting relationships with her patients. She is interested in all aspects of general dentistry, especially oral surgery and working with children. Kelsey is also able to offer Invisalign for her patients.

Kelsey continues to volunteer at Kelowna’s Gospel Mission Dental Clinic and has been doing so since her undergraduate program at UBC Okanagan. When not in the clinic, Kelsey enjoys staying active at the gym, exploring the outdoors, and travelling. Her interests include hiking, camping, and spending quality time with her friends, family, and dogs.

Dr. Gillian Rychjohn graduated from the University of Saskatchewan in 1992. She and her husband Dr. Colin Hughes moved to Kelowna and set up Creekside Dental Clinic along with her brother-in-law Dr.Todd Penkala and sister-in-law Dr. Darcy Penkala in May 1992.

Gillian practices all aspects of general family dentistry. She enjoys forming long lasting relationships with her patients ensuring they understand their dental treatment. She also loves working with children.

Outside of work, Gillian enjoys being a Mom to her two daughters, playing the piano, travelling with her family and maintaining and active healthy lifestyle. She also likes to road bike and snow board at Big White in her time off.

Professional Distinction

• College of Dentistry, University of Saskatchewan, 1992

Darcy graduated from the College of Dentistry at the University of Saskatchewan in 1991. After graduation she worked as an associate in Saskatoon for a year. She moved to Kelowna after marrying Todd and has practiced at Creekside ever since.

Darcy practices all aspects of general dentistry and enjoys working with children.

Outside of dentistry, Darcy loves traveling, photography, hiking, reading and, most of all, hanging out with her three girls.

Professional Distinction
•College of Dentistry, University of Saskatchewan, 1991
•Accreditation for Botox Cosmetic, PTIFA, 2008

Colin graduated in 1991 from the College of Dentistry at the University of Saskatchewan. Colin was an associate in Saskatoon for one year before moving to Kelowna and opening Creekside Dental Clinic with his wife, Dr. Gillian Rychjohn, his sister and brother-in-law Dr’s Darcy Penkala and Todd Penkala. He loves practicing in this unique family owned group practice.

Colin received his accreditation for Intravenous Sedation in 2006 at Portland State University in Oregon which he finds a valuable asset in his general dentistry practice that includes the placement and restoration of dental implants, extraction of wisdom teeth and root canals.

Away from dentistry, Colin is an avid golfer, enjoys road biking and his time snowboarding with his family. He also enjoys foreign travel with his wife and two girls learning as much as they can from the areas they explore. He also volunteers his time to the less fortunate by volunteering at the Kelowna Gospel Mission Dental Clinic and participating in the University of British Columbia dental resident mentoring program at the Gospel Mission Dental Clinic.

Professional Distinction

• College of Dentistry, University of Saskatchewan, 1991
• Accreditation for Intravenous Sedation, Portland State University, Oregon, 2006

Dr. Amy Ellett was born and raised in Kelowna and grew up as a patient of Todd’s at Creekside Dental Clinic! She received her Doctor of Dental Surgery degree from the University of Alberta in 2007 and went on to complete two years of specialized hospital dentistry training at UCLA in Los Angeles. She has worked in private practice in Santa Monica, California, and most recently in Calgary, Alberta.

Amy enjoys practicing all aspects of general dentistry, including working with children and providing Invisalign clear aligners. Amy is passionate about donating her time to dental aid organizations and has travelled for several years with Kindness in Action to provide dental care to those in need in rural Central and South America and Cambodia.

Amy is an endurance athlete who competes in Ironman triathlons and marathons, including the Boston marathon. She is also an avid traveller who loves surfing and photography.

Dr. Harry Clyde was born and raised in the Ellison area of Kelowna where he attended Rutland Senior Secondary school and later earned a Bachelor of Science degree in Biology at UBC’s Okanagan campus.

In 2013, Harry moved to Vancouver to pursue a Doctor of Dental Medicine degree at UBC. He was fortunate to get to spend a month in the summer after his third year of dental school doing volunteer dentistry at Kelowna’s Gospel Mission. After Graduating in 2017, Harry moved to Grande Prairie, Alberta where he treated patients from throughout Northern Alberta, Northeast BC and even the Northwest Territories. He developed an interest in oral surgery and wisdom teeth extractions and attended University of Alberta’s Intravenous Sedation program in 2018 where he became certified to provide IV moderate sedation to anxious patients and patients undergoing surgical procedures. He has taken continuing education on wisdom teeth extractions, root canals and gum surgery. The aspect of dentistry he finds most rewarding is helping patients when they are experiencing dental pain.

Outside of work, Dr. Clyde married his wife Bre, a dental hygienist, in Kelowna in 2019. They adopted a French Bulldog named Mabel in 2022. Harry and his family are excited to finally move back home to Kelowna after many years away. Harry’s other interests include playing guitar, working out at the gym, going to concerts, travelling and wakeboarding.