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Dr. Frank Mastrogiacomo Orthopedic Surgeon in Toronto

Orthopedic Surgeon

On staff and in the clinic, Dr. Frank Mastrogiacomo is an orthopedic surgeon in Toronto, from North York General Hospital. Dr. Mastrogiacomo’s special interest is in lower extremity reconstruction, specifically, primary and complex revision arthroplasty of the hip and knee, sports injury surgery of the knee, forefoot reconstruction, and orthopedic trauma management.

Dr. Angelo Gavris, Chiropractor


“I like working with top healthcare providers and our team approach to care, and seeing a patient’s health restored to its fullest potential.”

As a certified chiropractor, Dr. Angelo Gavris graduated with clinical honours from Parker Chiropractic College and is a member of the Canadian Chiropractic Association, Ontario Chiropractic Association, International Chiropractic Association, and the College of Chiropractors of Ontario. In addition to a variety of chiropractic techniques, including low force and long lever release techniques, Dr. Gavris is also trained in kinesio sport taping and active release techniques.

Dr. Diana Giannoulias, Chiropractor.


“I provide excellent care tailored to patient’s personal preferences and needs, and have a special interest in treating expectant mothers and promoting a healthy pregnancy through chiropractic care.”

Caring for people, developing relationships, and coaching them to better health. As a chiropractor, Dr. Diana Giannoulias has a Master’s degree in science from the University of Toronto, where her primary focus was the physiology of pregnancy in women.

Jonathan Tunley, Physiotherapist.


Jonathan Tunley is a registered physiotherapist in good standing with the Ontario College of Physiotherapists. He completed his Masters degree in physiotherapy at Leeds Beckett University in the United Kingdom. Jonathan’s approach to patient care is multi-faceted including a strong emphasis on manual therapy, active rehabilitation, and lifestyle modification.


Purti P. Haral is a registered physiotherapist. She completed his Master’s Degree in Physiotherapy at D.Y. Patil University in India. Purti’s approach to patient care is multi-faceted, with a strong emphasis on Kinesiotaping, joint mobilization techniques, Pilates, and Neurodynamics.

Mark K. L. Chan BSc.


Mark K. L. Chan is an Ontario registered Chiropodist, Saskatchewan registered Podiatrist, UK registered Podiatrist, and Hong Kong Podiatrist. His clinical focus includes General foot care including nail care, callus, corns, plantar warts, biomechanics assessments and custom orthotics, soft tissue surgeries, foot and ankle injections, foot and ankle acupuncture, diabetic foot care and ulcers.

As a passionate chiropodist/podiatrist, Mark is always learning new things to increase the scope of his practice. He enjoys working in a multidisciplinary in order to communicate with different professionals for some complex cases.

For more information on what Mark is up to, follow him @:
FB: @markchanpod
IG: @markchanpod

Dr. Melissa Lee

Naturopathic Doctor
Registered Acupuncturist

Melissa is a dedicated Naturopathic Doctor who is passionate about health. She focuses on understanding people, illness patterns and disease which allows her and her patients to identify areas of the body that need support. By actively listening and individualizing treatments, she helps people understand their health while addressing the root cause of a condition.

As an Acupuncturist, she combines her classical acupuncture training with a myofascial and neuroanatomical approach. She has co-authored peer reviewed articles in Eastern and Western acupuncture journals and teaches advanced acupuncture techniques for the Integrative Acupuncture Certificate Program at York University and the Neuromeridian Acupuncture program.

When she’s not seeing patients, she is enjoying her time with her family, baking or biking around the city.

Janice Wu, Naturopathic doctor.

Naturopathic Doctor and Doula
Strength and Conditioning Specialist

Janice Wu is a licensed Naturopathic Doctor and Doula and Certified Strength and Conditioning Specialist. Her goal is to help couples transition seamlessly into parents, and tailoring their health to suit their needs.

Janice integrates a simple, yet thoughtful approach to her family centered primary care practice. She loves working with all age groups, and has a special interest in pregnancy, paediatrics, and athletes.

She infuses her education and experience into developing a thorough and realistic treatment plan for all her clients. Diet, lifestyle and exercise prescription are foundations to her practice, as well as acupuncture, cupping, botanical medicine, clinical nutrition and functional medicine.

Demetre Katrivanos BSc, ND

Naturopathic Doctor

Dr. Katrivanos is a licensed naturopathic doctor registered with the College of Naturopaths of Ontario. In addition to his degree in naturopathic medicine (ND), Dr. Katrivanos also completed and obtained his degree in conventional medicine (MD). He has had training in a clinical setting at Toronto General Hospital and Toronto Western Hospital respectively. 

Dr. Katrivanos has a centred-patient practice and his focus lies beyond the symptoms, and involves understanding and addressing the origins, prevention and treatment of complex, chronic disease using a whole-body systems approach. With a foundation in both disciplines of medicine, Dr. Katrivanos is a strong proponent of the integrative quality of both conventional and naturopathic medicine.

Gerry Chen

Registered Massage Therapist

Gerry Chen graduated with outstanding performance in massage therapy program of Pharma Medical Science College of Canada (PMCC). His major practice is focusing on sports injury, post-surgery rehabilitation and chronic pain management. Experienced in treating tension headache, frozen shoulder, sciatica, piriformis syndrome, calf muscle tightness and other soft tissue and joints dysfunction.

Registered Massage Therapist

Dawn has been a Registered Massage Therapist since 1995 and still enjoys meeting new clients and taking on new challenges.

She is very passionate about women’s health and is a firm believer that everyone should get massage therapy when pregnant and therefore specializes in prenatal massage.

Dawn also has an extensive background in rehabilitation massage, as well as geriatric care. Each session is tailored to individual needs. Whether it is deep tissue, sports massage, or a gentle, relaxing Swedish massage, you will be in good hands.

Registered Massage Therapist

“I enjoy having the ability to help patients improve their health, working alongside other health care individuals within multiple settings and environments, and being given the opportunity to always expand my knowledge of practical application of treatments.” 

As a registered massage therapist, Kirsten Hertzum Larsen brings a wealth of knowledge and extensive experience in therapeutic and soft tissue massage and treats a diverse range of patients including those with sports-related, repetitive strain, chronic and acute injuries, motor vehicle accidents, and pregnancy.

Wayne Ivey, Social Worker & Psychotherapist

Clinical Social Worker / Psychotherapist

“A life in order is worth living, and teaching clients to live by this principle continues to motivate Wayne to achieve paramount success with his clients.”

With a Master’s Degree in Social Work, from the University of Toronto, Wayne Ivey specializes in trauma, crisis intervention, and chronic pain management. He is able to assist as a psychotherapist to help his clients with problem-solving skills, as well as incorporate strategies to allow clients to take greater control over their lives.

He has worked extensively in the public and private sector over his entire career, which makes him uniquely positioned to help clients navigate the sometimes complexities within the system such as Worker’s Safety Insurance Board (WSIB), insurance companies claims through personal injury and accessing the challenges of the healthcare industry.

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Don Valley Health & Wellness
Physiotherapy & Sports
Rehabilitation Centre

658 Danforth Avenue
Suite 200
Toronto, ON M4J 5B9

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Offering access to the latest physiotherapy techniques and a focused team approach to your overall health care.

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Don Valley Health & Wellness – Physiotherapy & Sports Rehabilitation Centre offers services such as physiotherapy, massage therapy, chiropractic, osteopathy, and acupuncture. We also have 2 Naturopaths and a Chiropodist on staff full-time. We supply orthopedic devices such as custom orthotics and shoes, TENS units, braces/splints, and compression socks/hosiery.

Don Valley Health & Wellness provides a focused team approach to your overall health care from qualified, caring staff conveniently located on the corner of Pape and Danforth in East York, the Danforth Village, in Riverdale, steps from Withrow Park and can be reached either by Pape Avenue or Danforth Avenue.

All services and products are covered by extended health insurance plans, motor vehicle accident insurance claims, plus WSIB claims.