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Keene Center for Pain and Spine Team

Mark A. Horton, Dartmouth-Hitchcock Pain Management provider.

Mark A. Horton, MD

Pain Management

Areas of Focus
  • Treatment of acute and chronic spine pain
  • Ultrasound guidance for pain interventions
  • Transnasal approaches to treatment of head and facial pain
Nancy E. Johnson, Dartmouth-Hitchcock Physical Medicine & Rehabilitation provider.

Nancy E. Johnson, MD

Physical Medicine & Rehabilitation

Areas of Focus
  • Stroke
  • Spinal cord injuries
  • Head injuries
  • Amputees
  • And 1 more areas of focus
Timothy C. Ryken, Dartmouth-Hitchcock Neurosurgery provider.

Timothy C. Ryken, MD, MS


As Chief of Neurosurgery at Dartmouth-Hitchcock Medical Center, my mission is to create an environment that is founded on evidence-based medicine principles and patient-centered health car…
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Areas of Focus
  • General adult and pediatric neurosurgery
  • Tumors of the brain and spine
  • Disorders of the spine
  • Minimally invasive techniques
  • And 1 more areas of focus
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