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Dr. Brian Kleinberg is the director of a successful multidisciplinary wellness practice in Toronto that he founded in 1982. Located at 390 Steeles Avenue West in Thornhill, Ontario, the clinic is called Thornhill Health and Wellness.

As a chiropractor with over 40 years of practice experience he has treated and helped thousands of people utilizing effective treatment tools and teaching preventive health and lifestyle management.

Your body is a moving, physical machine. Just like a mechanic takes cares of the natural wear and tear in your car, a chiropractor takes care of the natural wear and tear that occurs in your body. Your personal health is a priceless commodity. Joint and muscle pain and restriction can make life miserable by greatly diminishing the quality of your life. Let Dr. Kleinberg help you get the most out of your life by helping you control and manage your pain naturally and teach you the best ways to lead a healthier lifestyle and optimize your health and wellness. Please inquire for further details.

     Dr. Brian Kleinberg:

  • Graduated from the Canadian Memorial Chiropractic College in 1982

  • Established his first clinic in 1983

  • Has extensive experience treating a wide range of musculoskeletal conditions

  • Focuses attention on lifestyle concerns and prevention of injury and illness

  • Works with a large network of outstanding and experienced healthcare providers

  • Has convenient evening hours and Sunday clinic's  available

  • Provides multidisciplinary services including Massage Therapy, Osteopathy and Acupuncture

Dr. Deborah Mechanic, Chiropractic Associate

Chiropractor & Certified Acupuncture Provider

Dr. Deborah Mechanic graduated as a chiropractor from CMCC in Toronto in May 2017.  Dr. Mechanic joined Dr. Kleinberg’s practice as a chiropractic associate in 2021. Dr. Mechanic brings a wealth of techniques and services to Dr. Kleinberg’s office including:

  •  Advanced chiropractic techniques for treating pre/post-natal women and children

  •  Clinical areas of interest for a diverse group of patients including those who suffer from headaches, concussion, facial pain and TMJ problems.

  •  Integrated acupuncture treatment protocols which include a vast knowledge of acupuncture techniques.

  •  A treatment focus which is evidence-based and functional patient-centred.

  •  An emphasis on the importance of flexibility and strength to enhance body mechanics and optimize rehabilitation techniques as a result of her knowledge as a yoga instructor.

  •  Her advocacy for collaborative medicine and close work with healthcare professionals from all fields.

Dr. Mechanic invites you to learn more about her skills and experience and how she can enhance your well being.

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Dr. Kiana Ragagnin, Chiropractic Associate

Chiropractor & Certified Acupuncture Provider

  •   Dr. Kiana Ragagnin graduated from CMCC in 2023 and joined Dr. Kleinberg’s practice in February of 2024.

  •   Dr. Ragagnin specializes in treating a variety of musculoskeletal conditions, with a particular focus on   those prevalent among the aging population, such as arthritis, back pain, and spinal stenosis.

  •   Her approach is comprehensive, utilizing tailored techniques including soft tissue therapy, manipulation, mobilization, and acupuncture. Dr. Ragagnin focuses on patient empowerment through education and personalized rehabilitation exercises and she aims for long-lasting results and enhanced quality of life for all her patients.

  •  Outside clinical practice, Dr. Ragagnin is pursuing further education in Chiropractic Clinical Sciences and contributes to teaching and research at the Canadian Memorial Chiropractic College, particularly focusing on aging adults with back pain and osteoarthritis.

  •  With a background in competitive dance, Dr. Ragagnin brings a unique understanding of movement and body mechanics to her practice, enhancing her ability to address diverse patient needs with empathy and expertise.

  •  At every visit, you can expect personalized care to support your journey to optimal health. Dr. Ragagnin provides compassionate guidance every step of the way. She looks forward to meeting you and helping you feel better and stay better!!


Dr. Kleinberg's chiropractic services are not covered by OHIP but many extended health care insurance providers do cover services including the following companies:

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