About Interventional Pain Institute

Dr. Barrett Johnston

Dr. Barrett Johnston was born in New Orleans, Louisiana and is a graduate of California Polytechnic State University. He obtained his medical degree at Louisiana State University in New Orleans. His anesthesia residency and pain fellowship were both completed at Harvard’s School of Medicine at Brigham and Women’s Hospital in Boston, Massachusetts.

Following his training, Dr. Johnston returned to Louisiana and founded Interventional Pain Institute in Baton Rouge. Dr. Johnston works primarily in Baton Rouge and provides diagnosis and pain management treatment to individuals suffering from a wide array of conditions that cause chronic pain. He employs a multimodal approach of therapies and disciplines to create an individualized pain management treatment plan for each patient. His goal is to empower each patient to life a full and impactful life while managing their pain.

Dr. Johnston also works at Advanced Pain Institute in Hammond, Louisiana, to better serve those in the eastern part of the state. Prior to practicing pain management in the Baton Rouge area, Dr. Johnston held Anesthesiology positions in Massachusetts. He served as a Clinic Associate Anesthesiologist at Partners Healthcare, Brigham & Women's Hospital Department of Anesthesiology and Perioperative and Pain Management. Concurrently, he was a Staff Anesthesiologist at Norwood Hospital in Norwood, Massachusetts.

Believing it is important to remain active in the medical community, Dr. Johnston is a member of the Louisiana State Medical Society, and the American Society of Interventional Pain Physicians. He is board certified by the American Board of Anesthesiology and the American Board of Anesthesiology Pain Medicine Certification. Dr. Johnston resides in Baton Rouge, Louisiana, and enjoys life with his four children.


View Dr. Johnston's Resume | Email Dr. Johnston

Specialized Treatment of:

  • • Low Back Pain
  • • Neck Pain
  • • Cancer Pain
  • • Limb Pain
  • • Abdominal Pain
  • • Headaches
  • • Fibromyalgia
  • • Joint Pain
  • • Muscle Spasticity
  • • Migraines

Treatment Options Include::

  • • Comprehensive Medication Management
  • • Physical Therapy
  • • Injections and Nerve Root Blocks
  • • Minimally Invasive Procedures
  • • Pain and Baclofen Pump Implants
  • • Nerve Stimulator Implants