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Dr. Nick Tsaggarelis BKin, DC, DAc, MEd
Over the years, I’ve developed a comprehensive approach to understanding the root causes of pain and dysfunction. My focus is always on delivering the most effective and personalized care for each individual. I refer to this approach as Integrative Manual Therapy & Active Rehabilitation—a combination of hands-on techniques and guided movement strategies designed to restore function and support long-term recovery.
My treatment draws from a broad range of therapeutic techniques, including the Fascial Distortion Model (FDM), Instrument-Assisted Fascial Release, Active Release Therapy (A.R.T.), Fascial Manipulation, Chiropractic Joint Manipulation and Mobilization, Osteopathic Manual Techniques, Neuro-Anatomical Acupuncture, Focused and Radial Shockwave Therapy, Laser Therapy (Photobiomodulation), Frequency-Specific Microcurrent, and Kinesiology Taping. These methods target the nervous system, muscles, and joints to relieve pain, improve mobility, and promote the body’s natural healing processes.
Once symptoms are under control, I guide patients through active rehabilitation—a personalized program of exercises, postural corrections, and movement retraining. This ensures a full return to health while minimizing the risk of recurrence or ongoing dysfunction.
I also collaborate closely with the other practitioners at ONE80 Health to provide the most comprehensive care possible. I refer to Rodrigo Almeida, M.OST when cases require deeper analysis of movement patterns and targeted rehabilitation exercises, and to Olga Voevodskaya, DOMP, DSCO when treatment involves nervous system regulation, cranial osteopathy, or visceral manipulation.
My goal is to help patients better understand the sources of their pain and dysfunction and to provide them with clear, effective pathways to restore movement, improve performance, and support long-term health.
Over the years, I’ve developed a comprehensive approach to understanding the root causes of pain ... Read More
Dr. Kathleen O'Hara
Dr. O’Hara works together with her patients to restore symmetry of function by optimizing mobility, strength and co-ordination. Discussion of lifestyle issues, nutrition and exercise are part of her approach; she readily refers as needed to her wide network of health care professionals.
Gentle instrument-assisted adjusting (The Activator Method), traditional spinal and non-spinal manipulation/mobilization and soft tissues techniques are her preferred methods of treatment. The latter include myofascial trigger point therapy, applied kinesiology and the Graston technique for releasing fascial restrictions.
Dr. O’Hara is a 1982 cum laude graduate of Toronto’s Canadian MemorialChiropractic College. Prior to this she earned a Bachelor of Science degree from Indiana’s Ball State University and completed graduate coursework at the University of Wisconsin-Madison.
In 1989 she opened the multi-disciplinary clinic, Bloor-Avenue Chiropractic, and practiced there until her transition to ONE80health in December 2020.
Dr. O’Hara works together with her patients to restore symmetry of function by optimizing mobilit... Read More
Rodrigo Almeida M.Ost
Experience the holistic osteopathic care of Rodrigo Almeida, M.Ost at ONE80 Health in Toronto. Rodrigo blends structural treatment, manual therapy, and rehab-focused movement to restore function and promote long-term health.
An internationally trained Osteopathic Manual Practitioner, Rodrigo brings over two decades of clinical and movement experience. Originally from Brazil and educated in the UK, he integrates osteopathic manual therapy with movement-based rehab, clinical Pilates, massage, and strength training to deliver truly personalized care. Rodrigo treats a wide range of musculoskeletal and neuromuscular conditions using techniques such as joint mobilization, soft tissue work, dry needling, and taping. He also draws from his UK experience with shockwave therapy, TECAR, ultrasound, and IDD therapy. Each session is tailored to address the root cause of pain or dysfunction, helping patients move better and feel better. With a background in capoeira, martial arts, yoga, and strength training, Rodrigo has a deep understanding of movement and recovery.
His passion for education empowers patients to take an active role in their rehabilitation. He supports individuals with back, neck, or joint pain, postural imbalances, injury recovery, and stress-related functional issues. Rodrigo is now accepting new patients at ONE80 Health and offers care in both English and Portuguese.
Experience the holistic osteopathic care of Rodrigo Almeida, M.Ost at ONE80 Health in Toronto. Ro... Read More
Olga Voevodskaya D.O.M.P., D.Sc.O.
Olga Voevodskaya is a highly skilled and compassionate practitioner joining our team as an Osteopathic Manual Practitioner and Registered Massage Therapist. With a foundation in pediatric nursing and over a decade of experience in manual therapy, Olga brings a unique depth of clinical insight to her holistic practice.
Her journey into osteopathy was guided by a deep belief in the body’s innate ability to heal when properly supported. She holds both a Diploma in Osteopathic Manual Practice (D.O.M.P.) and a Diploma in the Science of Osteopathy (D.Sc.O.), in addition to being a licensed RMT. Olga has developed a special interest in treating patients experiencing neurological symptoms, stress-related conditions, concussions, head trauma, and anxiety. Her hands-on approach is gentle yet precise—guided by palpation, anatomical understanding, and a calm, grounded presence that immediately puts patients at ease.
Olga believes that meaningful healing begins with listening—both to the patient’s story and to the subtle rhythms of the body. She works to uncover the root causes of imbalance and create space for long-term change, not just temporary relief.
Olga Voevodskaya is a highly skilled and compassionate practitioner joining our team as an Osteop... Read More
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