About Our Providers

Craig Humphreys

Craig Humphreys, MD is a board certified orthopedic surgeon and is fellowship trained in orthopedic spine surgery. Dr. Humphreys moved to Alaska when he was very young. His family had a homestead on the Yetna River and they also purchased property on the Kenai River in the early 70’s. After completing his training, Dr. Humphreys was part of a very active spine practice in Chattanooga, Tennessee. While living in the lower 48, he made frequent trips back to the family cabin several times a year and yearned to return home. He completed his wish in 2011 when he and his family moved to Soldotna and opened Kenai Spine. Being the first spine surgeon locally allowed residents of the Kenai Peninsula to receive world class spine care without having to travel to the lower 48. Central Peninsula Hospital purchased the first O-Arm in Alaska which provided Dr. Humphreys with the most advanced surgical navigation technology available. His philosophy for spine care is simple, explore and deplete all non-surgical options before considering spine surgery.


Fellowship in Orthopedic Spine Surgery
Medical College of Wisconsin, Milwaukee, WI

Internship and Residency 
Loyola Stritch School of Medicine, Chicago, IL

Medical School 
Loyola Stritch School of Medicine, Chicago, IL

Undergraduate Education 
University of Notre Dame, Notre Dame, IN

Board Certification:
American Board of Orthopeadic Surgery

John Andreshak

John Adreshak, MD, FAAOS is a board certified orthopedic surgeon and fellowship trained trained in spine surgery. After graduating from the US Air Force Academy he began his career as a rocket scientist in the Air Force. He then went on to medical school medical school in Chicago, continued there with surgical training and completed a Fellowship in Spine Surgery at the Mayo Clinic.

Upon completing his fellowship, Dr. Andreshak served in the US Air Force as Chief of Spine Surgery while based in Afghanistan during Operation Enduring Freedom. Upon completion of his service in Air Force, Dr. Andreshak returned to the Chicago area where he had an active spine surgery practice at Northwestern Medicine Regional Medical Group. In 2017, wanting to expand his hunting and fishing activity, he moved to Soldotna and joined Dr. Humphreys at Kenai Spine. 


Residency in Orthopedic Surgery
Loyola University Medical Center, Chicago, IL

Medical School:
Rosalind Franklin University of Medicine and Science, Chicago, IL

Mayo Clinic, Rochester, MN

Board Certification:
American Board of Orthopeadic Surgery

Fellow of the American Academy of Orthopaedic Surgeons

Samuel Adams

Samuel Adams, MS, is an Orthopedic Spine Surgeon with 10 years of experience. After completing medical school in his hometown of Toledo, Ohio, he moved to Massachusetts for Orthopedic training. At the conclusion of his training, he spent a year at West Virginia University to sub-specialize in spine surgery. He moved to Alaska in Fall 2019 to experience the adventure Alaska brings and work in communities that he could connect with and be a contributing member to. He spent 5 yeas in Palmer, Alaska working at Mat-Su Regional before taking a position at Central Peninsula Hospital. With an expanded team and services, he hopes to continue providing world-class care to his new community. He has a background in Robotic Spine Surgery and a keen interest in Cervical Myelopathy which has been the focus of his research over his career. In addition to cervical spine procedures, he works on thoracic and lumbar spine conditions as well. He performs both fusions and motion preserving procedures, such as disc replacement. With his background in Orthopedics, he also performs several procedures for Orthopedic Trauma and Hand issues. Outside of work, he is active in endurance and mountain racing and has a long-standing love for fishing.


Fellowship in Orthopedic Spine Surgery
West Virginia University, Morgantown, WV
Department of Orthopedics

Orthopedic Surgery Residency
The University of Massachusetts Medical School, Worcester, MA
Department of Orthopedics and Physical Rehabilitation

MD, University of Toledo College of Medicine; Toledo, OH

B.S. Honors Biology (Pre-med) (Summa Cum Laude)
The University of Toledo; Toledo, O

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