Alexander Chamessian, MD, PhD

Pain Management

Make an appointment »

View Accepted Health Insurance »

Specializes in

Neuropathic pain, diabetic peripheral neuropathy, small fiber neuropathy, chemotherapy-induced peripheral neuropathy, idiopathic peripheral neuropathy, immune-related peripheral neuropathy, Guillain-Barre Syndrome, nerve injury, entrapment neuropathies, carpal tunnel syndrome, central neuropathic pain due to stroke, spinal cord injury, multiple sclerosis and other neurological injury, spinal cord stimulator trial, implant dorsal root ganglia stimulator trial, implant peripheral nerve stimulator trial, implant diagnostic and therapeutic nerve blocks

Referral required

A referral from your primary care doctor or another provider is required to make an appointment with this specialist. Contact your doctor for a referral, or call our office for more information.

Appointments

Hospital Affiliations

  • Barnes-Jewish Hospital
  • Barnes-Jewish West County Hospital
  • Missouri Baptist Medical Center

Experience

Board Certifications

  • Physical Medicine and Rehabilitation
  • Pain Medicine

Academic Title(s)

Assistant Professor of Anesthesiology, Pain Management

Research Interests

Pathogenesis of neuropathic development and assessment of novel, non-addictive analgesics, precision diagnostics for neuropathic pain, neuromodulation clinical research

Publications & Research

View research profile »

Education

Fellowship: Pain Medicine

2024 Washington University School of Medicine, St. Louis, MO

Residency: Physical Medicine and Rehabilitation

2023 Washington University School of Medicine, St. Louis, MO

Medical Degree

2019 Duke University School of Medicine, Durham, NC

PhD: Pain Neurobiology

2019 Duke University School of Medicine, Durham, NC

Bachelor's Degree: Biochemistry

2009 Stony Brook University, Stony Brook, NY,

Financial Disclosures
  • Pacira
    • Consulting/Advisory Board: $10,000 - $19,999
    • Reporting Date: 05/01/2026
  • Proxalgo, LLC
    • Equity: Yes
    • Reporting Date: 05/01/2026

Washington University and its physicians and health professionals are committed to ensuring integrity and objectivity in medical decision-making. Some of our physicians and health professionals work collaboratively with pharmaceutical, medical device or other medical care related companies to develop innovative ideas and products that can improve health care delivery and clinical outcomes for patients. In some instances, our physicians and health professionals have an ownership or potential ownership interest in a commercial company; and/or are paid by a commercial company to provide advice on product design or to speak about the use of medications, devices, equipment or procedures. These payments may include: a) compensation for consulting and speaking engagements, b) equity, and/or c) royalties for products invented by our faculty. Any payments to Washington University physicians or health professionals must be based on tangible services and may not exceed fair market value for their work. In addition to disclosure on this website, physicians and health professionals earning more than $10,000 per year must disclose their corporate financial relationship in writing to patients when prescribing or using that company's products.

Is this your profile? Request an edit »