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Our Team

Our providers have the skills and knowledge you can trust. We care for the most complicated pain and spine conditions and perform the most complex surgeries, all with a focus on excellent outcomes.

Our multidisciplinary team of experts come from pain medicine, spine surgery, and neurosurgery.

Center for Pain and Spine leadership

We provide pain, spine, and neurosurgical consultation and treatment at the following locations. Our care includes pain management consultation and treatment, as well as pain and spine rehabilitation services.

Our teams by location

Our full team

William A. Abdu, Dartmouth-Hitchcock Spine Center provider.

William A. Abdu, MD, MS

Spine Center

Areas of Focus
  • Care of the spine including surgery of the cervical, thoracic and lumbar spine for degenerative disorders including disc herniation
  • Lumbar spinal stenosis and Spondylolisthesis
  • Cervical radiculopathy and myelopathy
  • Disorders associated with spinal trauma
Locations
Lebanon
Kevin J. Armstrong, Dartmouth-Hitchcock Orthopaedics provider.

Kevin J. Armstrong, DNP, APRN

Orthopaedics

My goal is to listen to what my patients are feeling and to assist them in understanding their treatment options. I share with them what I know about spine-related pain and problems and he…
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Areas of Focus
  • Neck, mid-back, and low back problems
  • Functional restoration
Locations
Lebanon
Emily A. Crouse, Dartmouth-Hitchcock Pain Medicine provider.

Emily A. Crouse, MSN, APRN

Pain Medicine

Locations
Lebanon
David V. Dent, Dartmouth-Hitchcock Pain Medicine provider.

David V. Dent, DO, MPH

Pain Medicine

Areas of Focus
  • Musculoskeletal medicine
  • Spinal diagnostics
  • Spinal cord stimulation
  • Functional restoration
Locations
LebanonSt Johnsbury
Bert L. Fichman, Dartmouth-Hitchcock Anesthesiology provider.

Bert L. Fichman, MD

Anesthesiology

Areas of Focus
  • Radiofrequency ablation
  • Spinal cord stimulators
  • Kyphoplasty
Locations
LebanonNew London
Guannan Ge, Dartmouth-Hitchcock Pain Medicine provider.

Guannan Ge, MD

Pain Medicine

The burdening nature of chronic pain conditions can negatively affect a patient's quality of life, interfere with their ability to perform basic activities of daily living and result in ph…
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Locations
Lebanon
Janice E. Gellis, Dartmouth-Hitchcock Pain Medicine provider.

Janice E. Gellis, MD

Pain Medicine

Locations
LebanonNew London
Gerome M. Gepigon, Dartmouth-Hitchcock Spine Center provider.

Gerome M. Gepigon, MMS, PA-C

Spine Center

Spine medicine is a fascinating field because it combines several disciplines: orthopedics, neurology, rehabilitation and psychology. I enjoy the process of using these disciplines togethe…
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Locations
Lebanon
Mark A. Horton, Dartmouth-Hitchcock Anesthesiology provider.

Mark A. Horton, MD

Anesthesiology

Areas of Focus
  • Treatment of acute and chronic spine pain
  • Ultrasound guidance for pain interventions
  • Transnasal approaches to treatment of head and facial pain
Locations
Keene
Kermit M. Hummel, Dartmouth-Hitchcock Pain Medicine provider.

Kermit M. Hummel, MPAS, PA-C

Pain Medicine

In pain medicine, our approach is based upon an individual's experience of their own pain. We begin by asking them to describe how they hurt, when they hurt, how badly they hurt and where …
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Locations
Lebanon
Nancy E. Johnson, Dartmouth-Hitchcock Pain Management Center provider.

Nancy E. Johnson, MD

Pain Management Center

Areas of Focus
  • Stroke
  • Spinal cord injuries
  • Head injuries
  • Amputees
  • And 1 more areas of focus
Locations
Keene
Kevin J. McGuire, Dartmouth-Hitchcock Spine Center provider.

Kevin J. McGuire, MD, MS

Spine Center

I believe in forging a partnership with my patients so that we can set goals and expectations together. By working together, I can understand my patients' priorities, including the activit…
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Locations
KeeneLebanon
Colleen M. Olson, Dartmouth-Hitchcock Pain Medicine provider.

Colleen M. Olson, MSN, APRN

Pain Medicine

Areas of Focus
  • Chronic disabling back and neck pain
  • Coccydynia
  • Non-surgical care of spine problems
Locations
Lebanon
Adam M. Pearson, Dartmouth-Hitchcock Spine Center provider.

Adam M. Pearson, MD, MS

Spine Center

Areas of Focus
  • Adult spine surgery
Locations
Lebanon
Timothy C. Ryken, Dartmouth-Hitchcock Neurosurgery provider.

Timothy C. Ryken, MD, MS

Neurosurgery

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
Locations
Lebanon
Bruce M. Vrooman, Dartmouth-Hitchcock Pain Medicine provider.

Bruce M. Vrooman, MD, MS

Pain Medicine

I welcome patients who have common acute or chronic pain conditions as well as those who have been told there is nothing else that can be done to help them with their pain. Fundamentally …
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Locations
Lebanon
Kimberly M. Youngren, Dartmouth-Hitchcock Pain Medicine provider.

Kimberly M. Youngren, MD

Pain Medicine

Locations
LebanonWindsor
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