About Us
Specializing in John F. Barnes Myofascial Release Approach®, Massage Therapy and holistic Physiotherapy for clients across Oshawa and the Durham Region.
- Myofascial Release
- Physiotherapy
- Massage Therapy
- Chronic Pain Treatment
- Back, Neck, Hip Pain
- Stress Reduction
- Pelvic Balancing
- Nervous System Regulation
- Energy Healing
- Improve Posture & Mobility
- TMJ Dysfunction Care
- Post-Surgical Recovery
- Sports Injury Rehab
- Serving Oshawa, Whitby & Durham Region
Our Approach to Integrative Healing
At Inner Essence Myofascial Release, we believe true healing begins from within. Based in Oshawa, Ontario, we welcome clients from Whitby, Ajax, Pickering, Courtice, Bowmanville, and throughout the Durham Region. Our approach combines the John F. Barnes Myofascial Release Approach® with over fifty years of combined experience in Physiotherapy, Massage Therapy and Subtle Energy Healing to restore balance, relieve pain, and support whole-body wellness.
Founded by Dan Bosy and Lisa Martin Bertschy, Inner Essence is a healing space where science and intuition meet — helping clients reconnect with their inner wisdom, release chronic tension, and experience lasting transformation.
Lisa Martin Bertschy, B.Sc., RMT
Registered Massage Therapist | John F. Barnes Myofascial Release Practitioner
With over 27 years of experience as a Registered Massage Therapist and a lifelong curiosity about health, healing, and the awakening process, Lisa integrates science with intuitive understanding in her treatment sessions. Lisa is passionate about the John F. Barnes Myofascial Release Approach® and has experienced first hand how these sessions can help clients access deeper levels of healing. Lisa’s own profound shifts and personal transformation inspired her to become an Advanced John F. Barnes Myofascial Release Therapist, making this the primary focus of her practice.
Lisa’s background also includes advanced training in Integrative Manual Therapy (IMT), Reiki Master Teacher certification, advanced training in Mindfulness Meditation through the University of Toronto, Life Coach certification, and a deep exploration into the power of Sound & Frequency Healing.
Lisa’s inner journey of self-awareness and personal healing has been foundational to her work. She believes that the deeper we go within ourselves, the more fully we can hold space for the healing of others. Guided by a trauma-informed and somatic approach, Lisa helps clients reconnect to the wisdom within, creating space for physical and emotional healing and a renewed sense of balance and vitality.
Dan Bosy, B.Sc.(PT), Dip Manip.PT
Registered Physiotherapist | John F. Barnes Myofascial Release Practitioner
Dan Bosy, a Registered Physiotherapist with over 28 years of experience, specializes in John F. Barnes Myofascial Release Approach® at Inner Essence Myofascial Release in Oshawa, Ontario.
Serving clients in Oshawa, Whitby, Ajax, Pickering, and Durham Region, his background includes advanced training in Manual and Manipulative Physiotherapy, Mechanical Diagnosis and Therapy, Neuro Orthopaedics, and 17 years of practice with an interdisciplinary pain rehabilitation program at Health Recovery Clinic in Mississauga. Dan offers extensive experience treating people with complex pain histories. For over ten years, Dan has focused on John F. Barnes Myofascial Release Approach®, achieving Expert level certification.
Dan’s holistic approach to wellness has been profoundly shaped by his own personal healing journey that was sparked by his introduction to the John F. Barnes Myofascial Release Approach®. By blending Myofascial Release techniques with advanced manual therapy and his deep understanding of the body’s innate ability to heal, he effectively addresses structural restrictions, fosters somatic healing, and empowers clients to reclaim active, pain-free lives. Committed to mastering MFR, Dan offers a transformative path to recovery and whole-body wellness. He believes that a deeper connection with your body unlocks profound, life-changing authentic healing experiences.
