Our Practitioners

Christina Camilleri
Founder & Director

Christina Camilleri is described as “one of the best kept secrets of the Okanagan”, well-known by reputation amongst health professionals in the field of nutrition, disordered eating/eating disorders. Many colleagues in various health disciplines around the province speak highly of Christina’s professional contribution and expertise. With over 30 years of clinical nutrition and behavioral counseling experience, extensive training and teaching opportunities, Christina’s vast knowledge and leadership is evident in all she does.

Christina graduated in 1987 from the University of Guelph with a Bachelor of Applied Science, Honors in Applied Human Nutrition. In 1988 she attended her clinical dietetic internship at Victoria Hospital, London, Ontario. During her internship, she focused on electives that included disordered eating, sports nutrition and cardiology. In June 1988, Christina was hired as a clinical dietitian for the Western Counties Wing War Veterans at Parkwood Hospital in London, Ontario. In working closely with this patient population, it was evident to Christina how the trauma of war correlated strongly with the veterans’ quality of life. As a clinical dietitian, her focus was to manage symptoms of illness through therapeutic meal plans. However, this was only scratching the surface. How do you support someone in trauma to make the necessary dietary changes to improve wellness and quality of life if they really don’t care or feel they have anything to live for?

As a new graduate and someone who had her own life experience with trauma, Christina’s energy and passion to help others sustain a love of life no matter the tragedies or circumstances, prompted her continued education towards behavioral counseling. At Parkwood Hospital, Christina worked closely with the multidisciplinary team. This team consisted of medical doctors and pastoral care, recreational and horticultural therapy, and nutritional support for prevention of illness, disease management and early intervention of disease. This unique treatment approach transferred into her private practice at the Fitness Forum, a high performance fitness facility where she worked with elite athletes, fitness enthusiasts, and individuals suffering from disordered eating and eating disorders.

Sports Nutrition has always been one of Christina’s passions, following naturally from her own enthusiasm for many sports both competitive and recreational. Christina is dedicated to helping athletes become the best that they can be in their sport, and she has often been a pivotal member of an athlete’s support team. She has worked with major league baseball players, CFL football players, junior hockey players, elite ski racers, junior varsity basketball, volleyball, soccer, rugby players, triathletes and more. To be a part of any athletes’ journey is a privilege and honor. The combination of nutritional and behavioral counseling is essential for every individual who pursues the athletic dream!

In 1991, Christina relocated from Ontario to the Okanagan Valley where she used her unique nutritional, behavioral counseling and educational background to support the development of disordered eating programs in both Kelowna and Vernon. Christina became a strong advocate for client centered care and professional development of multidisciplinary teams. She worked tirelessly to ensure that clients and their families could stay closer to home during their treatment process. Liaison with the multidisciplinary hospital team was necessary in developing inpatient eating disorder protocols for youth on pediatrics and adults on psychiatry. Christina’s drive to remain current with best practices through varied educational opportunities, committees, conferences, literature searches, media interviews, international presentations, mentoring and training opportunities contributed to some of the best multidisciplinary outpatient programs in the province.

Since 1992, as founder of Healthy Essentials, Christina’s private practice has remained under the radar, receiving referrals by reputation and word of mouth. The flexibility of being a business owner allowed Christina to enjoy the benefits of raising her family while fulfilling her desire to work in her specialized fields of practice both at her home office and in Vernon. In 2013, Christina resigned after 22 years as Coordinator of the CMHA (Canadian Mental Health Association) North Okanagan Eating Disorder Program. Christina will continue her leadership role in the community as Director of Healthy Essentials Clinic (HEC); an integrative team of experienced professionals who  provide person-centered care for clients and families who seek our unique services. Christina will continue to mentor, train, educate and consult with professionals to help lead the way in community health. She looks forward to growing and building Healthy Essentials Clinic into a larger community of care providers who will help to make her dream of serving all people who desire health, wellness and personal excellence a reality!

For more information on Christina’s professional experience you can review Christina’s CV (curriculum vitae)

Heather Derry BSc, MD, FRCPC
Child & Adolescent Psychiatrist

Graduated from McMaster University in 2006 in Medicine and pursued Psychiatry residency training at the University of Toronto, graduating in 2011. Heather has been working
in Kelowna, BC from 2011 to present. Heather specializes in Child and Adolescent Psychiatry, and Eating Disorders. When asked why she wants to work for Healthy Essentials Clinic Heather says, “I love to be part of a multidisciplinary team and look forward to incorporating holistic
modalities to provide comprehensive care to clients and families”. 

Hobbies: Skiing

Dr. Sergei Reznikov,
Pediatrician

Dr. Sergei Reznikov is a graduate of Queen’s University School of Medicine, and completed his pediatric residency training at Memorial University of Newfoundland. Prior to joining Healthy Essentials Clinic, he practiced pediatrics in Ontario and Alberta, in both clinic and hospital settings. He has also worked as a clinical lecturer at the University of Calgary.
As a community pediatrician, Dr. Reznikov is experienced at managing various health concerns, including medical, developmental, and Mental health conditions. He is currently accepting patients aged
0 through 17 via referral from their primary care provider.

Hobbies: Outside of work, he is an avid outdoorsman – he enjoys kayaking, hiking, and backcountry camping. He also likes traveling, training in the martial arts, and playing video games (albeit not as well as his patients).

Linda Brattinga, B.Ed, Masters of Education in Psychology and Counselling
HEC Counselor

Linda grew up and graduated in Devon, Alberta. She moved to BC right after graduation and settled in Richmond initially before moving to Lake Country in 1992, and now calls this home.

Linda Graduated with her Counselling Degree in 2016 and has been working in the field since, specializing in teens / adolescents, women of all ages (50+), job related stress and fatigue, relationship issues and families of special need children.

When asked why she wants to work for Healthy Essentials Clinic Linda says: “I believe in what the clinic stands for, a holistic approach to healing. I feel I have a great deal to offer the clinic and look forward to being a part of a team that will make a difference when it comes to mental illness”.

Hobbies: Camping and hiking

Shailyn Waites
B.A in Psychology and Thanatology, MSW
HEC Counselor

Originally from Leamington Ontario, but has been living in Kelowna since 2019 to complete her Master’s of Social Work. Shailyn started in counseling in 2017 where she co-facilitated a survivor’s of suicide loss support group, and volunteered on the crisis line for a few years in Ontario. In 2020, Shailyn received a 16-month student practicum where she counseled youth and families with a variety of mental health challenges, while working at an organization that strictly focused on addiction recovery with youth and adults.

Shailyn specializes in working with adolescents, adults, and families working through a variety of mental health challenges including grief and loss, anxiety, depression, addictions, and trauma. Shailyn uses play/art therapy, collaborative proactive solutions model, mindfulness, cognitive-behavioural therapy, and is currently working on completing her certification in emotion-focused therapy.

When asked why she wants to work for Healthy Essentials Clinic Shailyn says, “This clinic provides an interdisciplinary collaborative approach that allows clients to be seen as a whole person which really resonates with my holistic perspective as a social worker. Also, from the moment I stepped into HEC it was a welcoming and warm team environment that made me feel supported and valued as a person and as a counsellor.”

Hobbies: Camping, Hiking, Hockey, Golf, Tennis, Working-out, and Reading. In my hockey career, I was a varsity athlete for a top-rated women’s university team placing first in all of Ontario and second in all of Canada, where I demonstrated leadership as a captain for three years.

Shannon Warner BSW, MSW, RSW
Registered Social Work Clinician

HEC Counselor

Shannon has been working in the field for 15 years. Shannon specializes in trauma-informed, culturally safe and spiritually sensitive and supportive counselling for individuals, families and groups working through mild – moderate mental health challenges including depression, anxiety, grief and loss (including pregnancy loss) intra-personal distress and family violence.

When asked why she wants to work with HEC, Shannon says: “I wholeheartedly share the values of courage, trust, respect and integrity, and I believe in the significance of interdisciplinary collaboration to ensure competent, comprehensive and compassionate family and client-centered care”.

Hobbies: I love to work in my garden, play with my grand-kids and enjoy healthy activities and food!

Kristin Edstrom, RCC,  Advanced EFFT , MOC , Maudsley Trained Therapist,
HEC Counselor

Born and raised in Kelowna, Kristin graduated in 2012 with a Masters in Counselling from Gonzaga University and has been practicing as a therapist ever since. She specializes in eating disorders as well as helping individuals make sense of their lives by integrating their past experiences and history into an understanding of their present circumstances using many modalities. Kristin also loves coaching parents and caregivers who have loved ones experiencing challenges in their lives.

Why work with HEC? “ I love that HEC is a team approach. Every person has many components that make them whole, it is my belief that a multi-disciplinary and collaborative approach is best to encourage individuals to live wholehearted lives of purpose and meaning.”

Hobbies: Two years ago Kristin  joined a swim club in Kelowna and I has swam in the Swim Across the Lake three times since 2017. She also loves biking throughout various parts of the world with her husband and friends.

Amber Whittemore, RD, BSN, MHSc
Registered Clinical Dietitian

Originally from Kelowna BC, but completed her schooling outside of the province she loves to travel and wanted to see the country while remaining in school. With an undergraduate degree from Wolfville, Nova Scotia and a Masters in Toronto, Ontario.
Amber is a newly graduated clinical dietitian, and has been passionate about health, nutrition, and wellness for as long as she can remember. Specializing in eating disorders and mental health, and working with these populations is what first drew her into health care and launched her dietetics journey.
Why work for HEC?: “Working as part of a multidisciplinary team, such as the one at Healthy Essentials, that is dedicated to the health and well-being of others, has always been my vision. So, having the opportunity to work along side such an amazingly dedicated team to improve the quality of life of our clients, is an absolute dream come true!”

Hobbies: When I am not at work you can probably find me in the mountains, hiking with my dog Benji!

Cassandra Greenhough, MScOT, BEd
Registered Occupational Therapist

Okanagan born and raised in Salmon Arm, but completed her schooling out of province graduating from the University of Alberta with her MScOT in 2016. Cassandra has been an OT for five years now specializing in the area of school aged therapy thus far—pediatrics is her area of expertise.

Why work for HEC?: “I am really looking forward to being part of an interdisciplinary team that helps clients achieve their goals. ”

Hobbies: I love to spend time outdoors—hiking, walking the dog, snowboarding, biking, enjoying the lakes, anything that combines fresh air and moving my body!

Jennifer Andrews MScPT, BKIN(Hons), Physiotherapist

Originally from Newfoundland, Jennifer has been working for over a decade as a physiotherapist and has worked in several locations and settings across Canada as well as Australia. She has taken courses in rehabilitative pilates with the APPI, has her Level 1 certification with the Acupuncture Foundation of Canada and has additional training in intramuscular and trigger point dry needling. Jennifer is also a certified sports first responder and works with various sports teams/events throughout the year.

Hobbies: Running, skiing, anything outdoors

Adriana Santillan Certified Pilates Practitioner, Group Fitness Instructor and Master Degree in Administration

Originally from Mexico, specifically from Mazatlan, but has found herself settled in the beautiful Okanagan. Adriana has worked in the fitness industry since 2012. She specializes in Therapeutic Pilates, Reformer and Mat Pilates for small and large groups. 

Why work for HEC: “I share HEC Values.  I believe everyone deserves JOY for life. HEC contributes with all its resources to help clients enjoy life.” 

Hobbies: Fitness!

Julie Belgrove, BA
Medical Office Administration

Born in Quesnel, but has been living in Kelowna for the past 29 years. While finance has been a primary focus for the past 3 decades (predominantly nonprofit), Julie specializes in people!

Why work for HEC: “I am attracted to HEC due to its multidisciplinary approach to healthcare (I love caring for people).

Hobbies: Any time with my family is a highlight. Hiking—I love to be in nature, the forest is my happy place!

Tammy Hart,
Medical Office Administration

Originally from Jacksonville Florida, but was primarily raised in Northern Alberta, Tammy has been working in administration for over 20 years.

Tammy specializes in many areas. She brings forward her ability to connect with people, patients and practitioners to ensure quality care and needs are met.

Why work for HEC: “I love working at HEC. The practitioners are amazing and I want to be part of a team that supports individuals on a team based platform. I feel a part of the team. I love helping vulnerable individuals and making a difference in their experience when they are reaching out. “

Hobbies: My hobbies include paddle boarding, sand castle building, fishing, boating, hiking and camping, or simply just soaking in the sun on the beach.

Janet Sprague BHScPT
Certified Lymphedema Therapist CLT-LANA, YTT200, Registered Physiotherapist

Born and raised in Windsor Ontario, graduating with her BHScPT from Mohawk-McMaster University, Janet has been working as a physiotherapist since 1987.

While Janet has been working as a physiotherapist for many years, she specializes in breast cancer rehab, cancer rehab and lymphedema.

Why work for HEC: ” I’m excited to offer physiotherapy to all cancer patients and lymphedema patients in the Okanagan Valley as it is currently an under serviced area”.

Hobbies: Walking and running in the trails with my golden retriever