Meet Our Physician
Terence K. Gray, DO, DACOA, DNBPAS
Interventional Pain Management Specialist & Anesthesiologist — Harvard-trained, board certified, and dedicated to compassionate patient care.
About Dr. Gray
Terence Gray, DO believes that when patients take an active role in managing their pain, they regain control of their lives, often leading to significantly improved health and overall quality of life. This philosophy is central to Dr. Gray's approach at Maine Comprehensive Pain Management.
Dr. Gray and his caring staff take an individualized approach to providing patients in Maine with prompt diagnoses and effective pain treatment options. He takes an active role in working on the latest treatment options, continually integrating cutting-edge non-invasive and minimally invasive regenerative therapies into his practice.
Dr. Gray's journey into medicine began after a successful career in the pharmaceutical industry, where he realized his desire to make a significant impact on people's lives. During his time in medical school, Dr. Gray conducted pivotal pain research and authored several publications, laying the groundwork for his career in interventional pain management.
He is not only a healthcare provider but also a proven business leader with advanced training in physician leadership from Harvard Business School and the Heller School at Brandeis University. As a co-founder of SichRay, LLC, Dr. Gray is focused on transforming technological concepts into patented medical products.
Outside of his professional commitments, Dr. Gray enjoys inventing, hunting, lobstering, fishing, and spending quality time with his family.
Education & Credentials
Research & Innovation
Publications, Patents & Achievements
Adjunct Professor
Dr. Gray is an Adjunct Professor of Clinical Research at the University of New England College of Osteopathic Medicine.
SichRay, LLC
Co-founded a medical technology company focused on transforming technological concepts into patented medical products.
US Patent: Medical waste containment device
US Patent number: 9839479 — A medical waste containment device that stores, secures, and disinfects hazardous materials introduced therein.
View DetailsUS Patent: Ventilating Tube and Stylet System
USPTO Patent number: 8,424,516 — Ventilating Tube and Stylet System. Granted April 30, 2013.
View DetailsPublished Research
Gray/Campbell Protocol
Researched, developed, and published the Gray/Campbell Protocol for treating migraine headaches. The results of this research lead to peer reviewers stating this was the most successful results published in the literature to date. The research showed 95% of patients had at least a 50% improvement in headache symptoms and the average patient improvement was 89.13%.
View DetailsPublished Research
Retrospective Review Investigating the Efficacy of the Gray/Campbell Migraine Injection Protocol for OnabotulinumtoxinA
Campbell, C., Gray, T.K., Challapalli, A., Gray, G. (January 7, 2025) "Retrospective Review Investigating the Efficacy of the Gray/Campbell Migraine Injection Protocol for OnabotulinumtoxinA (A Modified PREEMPT Injection Paradigm for Chronic Migraine Treatment)". Pain Studies and Treatment, Vol.13 No.1. DOI: 10.4236/pst.2025.131003
View DetailsPublished Research
Mantle Field Radiation for Hodgkin's Lymphoma
Campbell, C. and Gray, T.K. (2025) "Mantle Field Radiation for Hodgkin's Lymphoma: An Effective Treatment, But at What Cost?". Pain Studies and Treatment, Vol.13 No.1, December 26, 2024. pp. 1–7.
View DetailsPublished Research
A Fixating Dilemma: Unusual Presentation of Anterior Head Tilt
Challapalli, A., Campbell, C., Gray, T.K. (September 12, 2024) "A Fixating Dilemma: Unusual Presentation of Anterior Head Tilt and Spasms After Anterior Cervical Fusion Surgery". Journal of Anesthesia and Pain Medicine, Volume 9, Issue 3.
View DetailsPublished Research
A Shot In The Dark: Botulinum Toxin A for Post-Traumatic Gunshot-Induced Headaches
Ferguson, L., Shbeeb, D., Abdukalikov, R., Gray, T.K. (December 22, 2020) "A Shot In The Dark: A Case Series of Three Patients Successfully Treated With Botulinum Toxin A Injections for Treatment of Post-Traumatic Gunshot-Induced Chronic Headaches and Dystonia". BMJ Case Reports, 13(12), e236433.
View DetailsPublished Research
A Case of Posttraumatic Cervical Dystonia Treated with OnabotulinumtoxinA
Shbeeb, D., Abdukalikov, R., & Gray, T.K. (2018) "A Case of Posttraumatic Cervical Dystonia Treated with OnabotulinumtoxinA". Pain Studies and Treatment, Vol. 6, No. 2, pp. 9–14. doi: 10.4236/pst.2018.62002.
View DetailsPublished Research
Referred Hip Joint and Lower Extremity Pain from a Dermoid Cyst of the Ovary
Abdukalikov, R., Shbeeb, D., & Gray, T.K. (2018) "Referred Hip Joint and Lower Extremity Pain from a Dermoid Cyst of the Ovary". Journal of Anesthesia & Pain Medicine, Volume 3, Issue 1, pp. 1–3.
View DetailsPublished Research
Therapeutic Response Rate for Those with Piriformis Muscle Syndrome Treated by Fluoroscopy Guided Botulinum Toxin Injection
Ciurylo, W., Gray, T.K. (2017) "Therapeutic Response Rate for Those with Piriformis Muscle Syndrome Treated by Fluoroscopy Guided Botulinum Toxin Injection". Journal of Anesthesia & Pain Medicine, Volume 2, Issue 2.
View DetailsPublished Research
After 30 Physician Consults and Six Years: Posttraumatic Cervical Dystonia Treatment
Ciurylo, W., Gray, T.K. (2017) "After 30 Physician Consults and Six Years: a Case Report Detailing a Successful Treatment of Posttraumatic Cervical Dystonia using Botox". Journal of Anesthesia & Pain Medicine, Vol. 2, Issue 2.
View DetailsPublished Research
OnabotulinumtoxinA in the Treatment of Occipital Neuralgia Following Gunshot Injury
Ea, A. and Gray, T. (2016) "OnabotulinumtoxinA in the Treatment of Occipital Neuralgia Following Gunshot Injury". Pain Studies and Treatment, Vol. 4, No. 4, pp. 43–47.
View DetailsPublished Research
OnabotulinumtoxinA Nerve Blocks in the Treatment of Occipital Neuralgia
Ea, A. and Gray, T. (2016) "OnabotulinumtoxinA Nerve Blocks in the Treatment of Occipital Neuralgia". Pain Studies and Treatment, Vol. 4, No. 3, pp. 29–34.
View DetailsPublished Research
To Spasm, or Not to Spasm, That is the Question
McDonald, J.C., Gray, T.K. (2016) "To Spasm, or Not to Spasm, That is the Question". Journal of Anesthesia & Pain Medicine, Vol. 1, Issue 2.
View DetailsPublished Research
Clinical Manifestations of Late-onset Dropped Head Syndrome Secondary to Mantle Field Radiotherapy for Hodgkin's Disease
O'Brien, A., Gray, T.K. (2016) "Clinical Manifestations of Late-onset Dropped Head Syndrome Secondary to Mantle Field Radiotherapy for Hodgkin's Disease". Journal of Anesthesia & Pain Medicine, Vol. 1, Issue 1.
View Details