About Us
A state-of-the-art facility in Toronto, Canada, our clinic is staffed by pain specialists with the highest level of training available in North America. Our doctors provide the most advanced evidence-based treatments to help improve your quality of life.
Our facility is equipped with the latest technology utilizing real-time x-ray and ultrasound guidance to provide the safest and most accurate interventions to treat your pain.
All of our doctors have residency training in Anesthesiology or Physical Medicine & Rehabilitation. They have undergone ACGME accredited pain medicine fellowship training in world renowned hospitals in the United States.
Until recently, the vast majority of injections to treat pain in Canada have been performed without the availability of real-time x-ray and ultrasound guidance. There has also been a nation-wide shortage of board-certified pain medicine specialists in Canada. It is our mission to provide compassionate care to Canadians using the latest technology and advancements to treat chronic pain.
Following your initial consultation, our specialists will provide you with a comprehensive and individualized care plan using the latest interventional procedures, non-opioid based medications, and physical therapy. Most of our available treatments are OHIP insured services. Patients will receive a call within 2 weeks to be booked for a consultation.
Our Doctors
All of our doctors have residency training in Anesthesiology or Physical Medicine & Rehabilitation. They have undergone ACGME accredited pain medicine fellowship training in world-renowned hospitals in the United States.
Andrea Wong, MD, DABA, DABAPM
Interventional Pain Management
Anesthesiology
Ali Mirdamadi, MD, FABPMR, FABPMRPM
Interventional Pain Management
Physical Medicine & Rehabilitation
Nicole Khetani, MD, DABA, DABAPM
Interventional Pain Management
Anesthesiology
Imrat Sohanpal, MBCHB, FRCA, FFPMRCA, FRCP
Interventional Pain Management
Anesthesiology
Han Ying Zhang, MD, DABA, DABAPM
Interventional Pain Management
Anesthesiology
David L Snyder, MD, DABA, DABAPM, FRCPC
Interventional Pain Management
Anesthesiology
Jared McCallum, MD, FABPMR, FABPMRPM
Interventional Pain Management
Physical Medicine & Rehabilitation
Alex Vertes, MD, FABPMR, FABPMRPM
Interventional Pain Management
Physical Medicine & Rehabilitation
7 Of Our Doctors Have Been Recognized in Toronto's Top 500 Doctors List
Andrea Wong , MD, DABA, DABAPM
Recognized in Post City Magazine’s 2026 “Toronto’s Top 500 Doctors“ list - for excellence in Pain Management
Board Certifications
- Diplomate of the American Board of Anesthesiology
- Diplomate of the American Board of Anesthesiology – Pain Medicine
- College of Physicians and Surgeons of Ontario Recognized Specialist– Pain Medicine
Training
- ACGME Accredited Pain Medicine Fellowship
Case Western Reserve University – University Hospitals
Cleveland, OH USA
- ACGME Accredited Anesthesiology Internship and Residency
University of Kentucky – University of Kentucky Medical Center
Lexington, KY USA
Publications
- Advanced Procedures for Pain Management: A Step-by-Step Atlas
Chapter: 31: Intrathecal Drug Delivery: Medication Selection
Page 367 – 384
Andrea C. Wong and Salim M. Hayek
Editors: Sudhir Diwan, Timothy R. Deer. Springer Edition 1st, 2018
- Treatment of Chronic Pain Conditions: A Comprehensive Handbook
Chapter: 56: Polyanalgesic Consensus Conference (PACC) Guideline Statements
Page 201 – 204
Andrea C. Wong
Editors: Jason E. Pope, Timothy R. Deer. Springer Edition 1st, 2017
Alex Vertes, MD, FABPMR, FABPMRPM
Board Certifications
– Diplomate of the American Board of Physical Medicine & Rehabilitation
– Diplomate of the American Board of Physical Medicine & Rehabilitation – Pain Medicine
– College of Physicians and Surgeons of Ontario Recognized Specialist – Pain Medicine
Training
– ACGME Accredited Pain Medicine Fellowship
George Washington University Hospital - Washington, DC USA
– ACGME Accredited Physical Medicine & Rehabilitation Residency
SUNY Downstate Health Sciences University – Brooklyn, NY USA
– ACGME Accredited General Surgery Internship/Residency
The Brooklyn Hospital Center – Brooklyn, NY USA
Publications
– Combination Trigger Point Dry Needling and Botulinum Toxin Injection for Treatment Refractory Migraine: A Case Report. The American Journal of Physical Medicine & Rehabilitation, 2024. Aliyev, T., Ramos Emos, Vertes, A., Anziska, Y., and Agarwal, S.
– Spinal Procedures. PM&R Knowledge Now, 2023, American Academy of Physical Medicine and Rehabilitation, https://now.aapmr.org/spinal-procedures/. Vertes, A., Purewal, A., Do, J., and Agarwal, S.
– Spinal Cord Stimulators Versus Conventional Medical Therapy for Chronic Pain. Rehab in Review, vol. 30, no. 13, 2022. Vertes, A., and Ho, E.
– Ganglion Cyst and Cubital Tunnel Syndrome. Rehab in Review, vol. 30, no. 10, 2022. Vertes, A., and Ho, E.
Clinical Interests
– Fluoroscopic and ultrasound guided interventional pain procedures of the spine, knees, hips, and shoulders
– Neuromodulation (spinal cord stimulation, peripheral nerve stimulation)
– Minimally invasive pain procedures
Han Ying Zhang, MD, DABA, DABAPM
Recognized in Post City Magazine’s 2026 “Toronto’s Top 500 Doctors“ list - for excellence in Pain Management
Board Certifications
– Diplomate of the American Board of Anesthesiology
– College of Physicians and Surgeons of Ontario Recognized Specialist– Pain Medicine
– Diplomate of American Board of Anesthesiology — Pain Medicine
Training
- ACGME Accredited Pain Medicine Fellowship, SUNY Upstate (Syracuse, NY)
- ACGME Accredited Anesthesiology Residency, SUNY Upstate (Syracuse, NY)
- ACGME Accredited Internal Medicine Internship, SUNY Upstate (Syracuse, NY)
Research
Concentration Bupivacaine in Thoracic Epidural for Perioperative Analgesia: A Retrospective Study. Int J Pain Relief. 2021 Oct 04; 5(1): 010-015
Rare Complication of Dorsal Root Ganglion Stimulator Implant Procedure. North American Neuromodulation Society 2021
Jared McCallum, MD, FABPMR, FABPMRPM
Recognized in Post City Magazine’s 2026 “Toronto’s Top 500 Doctors“ list - for excellence in Pain Management
Board Certifications
– American Board of Physical Medicine & Rehabilitation – Pain Medicine
– American Board of Physical Medicine & Rehabilitation
Training
– ACGME-Accredited Pain Medicine Fellowship, University of Mississippi Medical Center (Jackson, MS, USA)
– ACGME-Accredited Physical Medicine & Rehabilitation Residency, Beaumont Hospital (Taylor, MI, USA)
– ACGME-Accredited Internal Medicine Internship/Residency, University at Buffalo (Buffalo, NY, USA)
Supplemental Courses/Training
– Certificate of Advanced Training in Pain Management, Beaumont Hospital Pain Management Services
– Contemporary Medical Acupuncture Program, McMaster University
– Medication-Assisted Treatment Waiver Training Course, American Academy of Addiction Psychiatry
– Toronto Pain Institute Online Fellowship, University of Toronto
Selected Research & Presentations
– Attitude of Providers Towards Long-term Opioid Use for Chronic Pain
– Current Recommendations for the Use of Platelet-Rich Plasma
– Patient Perceptions of the Use of Marijuana in the Treatment of Pain and Functional Impairment
– Prevention of Chronic Opioid Use Following Surgery
– Substance Use Disorder & Chronic Pain
David L Snyder, MD, DABA, DABAPM, FRCPC
Recognized in Post City Magazine’s 2026 “Toronto’s Top 500 Doctors“ list - for excellence in Pain Management
Board Certifications
– Diplomate of the American Board of Anesthesiology
– College of Physicians and Surgeons of Ontario Recognized Specialist– Pain Medicine
– Diplomate of American Board of Anesthesiology — Pain Medicine
- Royal College of Physicians and Surgeons of Canada
Training
– ACGME Accredited Pain Medicine Fellowship
Cleveland Clinic Foundation – Cleveland, OH USA
– ACGME Accredited Anesthesiology Residency
Tufts Medical Center – Boston, MA USA
– ACGME Accredited Internal Medicine Internship
Yale New Haven Health, Bridgeport Hospital – Bridgeport, CT USA
Clinical Interests
– Fluoroscopic and Ultrasound-guided pain interventions of the spine, face, shoulders, hips and knees
– Neuromodulation (spinal cord stimulation, peripheral nerve stimulation)
– Minimally invasive pain procedure
Imrat Sohanpal, MBCHB, FRCA, FFPMRCA, FRCP
Recognized in Post City Magazine’s 2026 “Toronto’s Top 500 Doctors“ list - for excellence in Pain Management
Dr. Sohanpal was trained in Anesthesia and Pain Medicine at the University College London Hospital, where he later worked as Consultant before moving to Toronto in 2014. He regularly provided group exam teaching on basic sciences, acute and chronic pain, regional and pediatric anesthesia. He also spent 1 year at the University of Michigan Hospital at C. S Mott Children’s Hospital as an Attendee specializing in pediatric Neuroanesthesia, pediatric acute pain and regional anesthesia. Dr. Sohanpal has continued his interest in education as part of the faculty for pain residents of the University of Toronto Pain Program. He has keen interest in regenerative therapy and has presented his research at Internationally renowned pain conferences. His goal is to continue to provide high standard of care using evidence-based medicine and to contribute to research and education in pain medicine.
Appointments and Privileges
University of Toronto Lecturer in Anesthesia and Pain Medicine
Anesthesiologist Scarborough Health Network
Education
Fellow of the Royal College and Physicians and Surgeons of Canada
Fellow of the Royal College of Anesthetists, UK
Fellowship of the Faculty of Pain Medicine of the Royal College of Anesthetists, UK
Bachelor of Medicine – University of Liverpool Medical School, UK
Research Interests
- Regenerative Therapy
- Radiofrequency Ablation (Platelet Rich Plasma and Stem Cells)
- Prolotherapy
Clinical Interests
- Spinal Pain
- Regenerative Therapy in Spinal and MSK pain
- Fluoroscopic and Ultrasound Guided Interventional Pain Management
- Teaching
Recent Publications
Medical Cannabis for the Management of Pain and Quality of Life in Chronic Pain Patients: A Prospective Observational Study. Ramin Safakish, Gordon Ko, Vahid Salimpour, Bryan Hendin, Imrat Sohanpal, Gena Loheswaran , Sun Young Rosalia Yoon Pain Med. 2020 Nov 1;21(11):3073-3086. doi: 10.1093/pm/pnaa163.
A Retrospective Study of Quality of Life and Outcome Measurement in Prolotherapy for Sacroiliac Joint Pain. Sohanpal I, MD,Safakish R MD, Babazadeh S. Clinical Research Associate. World Institute of Pain Annual Congress 2017.
Pulsed Radiofrequency of Stellate Ganglion Using Ultrasound Guidance for Pain Control In Patients With Upper Limb Complex Regional Pain Syndrome: A Retrospective Observational Study. Sohanpal I MD, Babazadeh S. 18th Annual Pain Medicine Meeting of the American Society of Regional Anesthesia and Pain Medicine
A novel approach for postoperative pain management after discharge, Imrat Sohanpal MD, CAN J SURG April 01, 2021 64 (2) E242-E243. Letter response to Author Dr. Rozario D.
Book chapter contributor. Essentials of Pain Management. Case scenario on functional restoration for pain.
Vadivelu, Nalini; Urman, Richard D.; Hines, Roberta L. (Eds.) 1st Edition. 2011, XXIII, 832 p. 114 illus. ISBN: 978-0-387-87578-1. Published March 2011
The prevalence of pain in patients attending sarcoma outpatient clinics,
Ping-Yi Kuo, Jonathan TC Yen, Gillian M Parker, Suzanne Chapman, Subhash Kandikattu, Imrat Sohanpal, Yolanda Barbachano and John E Williams. Sarcoma, vol. 2011, Article ID 813483, 6 pages, 2011.
Prevalence Of Pain In Patients Attending Melanoma Outpatient Clinics. P. Kuo, J.T. Yen, A. Gubbay, S. Chapman, S. Kandikattu, I.S. Sohanpal, R. Gupta, J.E. Williams: The Internet Journal of Pain, Symptom Control and Palliative Care. 2012 Volume 9 Issue 1
Performance on a probabilistic inference task in healthy subjects receiving Ketamine compared to patients with schizophrenia. Simon Evans, Basil Almahdi, Pervez Sultan, Imrat Sohanpal, Brigitta Brandner, Tracey Collier, Sukhi S Shergill, Roman Cregg and Bruno B Averbeck, Excepted for publication – Journal of Psychopharmacology
Book review of Essentials of Pain Medicine (3rd ed) By I Sohanpal
Author H T Benzon, S N Raja, S M Fishman, S Liu, S P Cohen Publishers Elsevier; 2011 ISBN 978 1437722420. Anaesthesia June 2012 Volume 67, Issue 6 Pages 571–694
Ali Mirdamadi, MD, FABPMR, FABPMRPM
Recognized in Post City Magazine’s 2026 “Toronto’s Top 500 Doctors“ list - for excellence in Pain Management
Board Certifications
- American Board of Physical Medicine & Rehabilitation– Pain Medicine
- American Board of Physical Medicine & Rehabilitation
- College of Physicians and Surgeons of Ontario Recognized Specialist– Pain Medicine
- College of Physicians and Surgeons of Ontario Recognized Specialist- Physical Medicine & Rehabilitation
Training
- ACGME Accredited Pain Medicine Fellowship
Albert Einstein School of Medicine/Montefiore Medical Center- Bronx, NY USA
- ACGME Accredited Physical Medicine & Rehabilitation Residency
Georgetown University School of Medicine/Medstar National Rehabilitation Hospital Washington, D.C. USA
- ACGME Accredited Internal Medicine Internship/Residency
SUNY Downstate Medical Center– Brooklyn, NY USA
Research and Presentations
Presenting research projects:
- Regenerative Medicine to treat unresponsive painful shoulder of multiple etiologies
- Genicular neurotomy as an alternative option for chronic knee pain after total knee arthroplasty
- Neuromodulation of the Dorsal Root Ganglion in the Treatment of Chronic Refractory Orchalgia
- Unusual case of motor neuropathy secondary to herpes zoster
- Decrease in radiation-induced fibrosis of the breast after topical Pentoxifylline and Vitamin E compound
- Fluoroscopic Guided Minimally Invasive Interventional Pain Management Procedures
Invited Lectures
- Emerging Percutaneous Procedures in Pain Medicine
- Interventional Treatment for Lumbar facet arthritis and Spinal Stenosis
- Imaging of the Sacroiliac joint, Lumbar, and Cervical Spine
- Diagnosis and Management of Low back and neck pain in the outpatient setting
- Post-Laminectomy Pain Syndrome: What is it?
- Mechanisms of Neuropathic Pain
- Introduction to Back pain
- Central Pain Syndrome
- Side Effects of commonly prescribed Pain Medications
- Mood/Personality Disorders in Chronic Pain Population
Nicole Khetani, MD, DABA, DABAPM
Recognized in Post City Magazine’s 2026 “Toronto’s Top 500 Doctors“ list - for excellence in Pain Management
Board Certifications
– Diplomate of the American Board of Anesthesiology
– Diplomate of the American Board of Anesthesiology – Pain Medicine
– College of Physicians and Surgeons of Ontario Recognized Specialist– Pain Medicine
Training
– ACGME Accredited Pain Medicine Fellowship
Thomas Jefferson University Hospital – Philadelphia, PA USA
– ACGME Accredited Anesthesiology Residency
Thomas Jefferson University Hospital – Philadelphia, PA USA
Publications
– Book Chapter – 06/2013
Khetani N, Zhou J, Viscusi ER. Epidural Anesthesia Chapter, Pain Medicine and Management: Just the Facts. McGraw- Hill Education
-Mergan Z, Khetani N, Wang D. An Autologous Epidural Blood Patch in a Patient with a Hematological Malignancy. Pain Medicine. 08/2014; 15 (8).
Extracurricular
- Operation Smile – Leadership Conference June 4-7 2015
- Operation Smile – Children’s surgery for cleft palate and cleft lip, Medical Mission March 10-21 2015