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Physician biographies

S. Craig Humphreys, MD | John L. Andreshak, MD, FAAOS | Susan Reed, PA-C



S. Craig Humphreys, M.D.
Fellowship-trained spine surgeon
Board Certified Orthopedic Surgeon

Kenai Spine was founded in 2011 by Dr. Craig Humphreys, a board-certified orthopedic surgeon who is fellowship-trained in spine, the highest level of medical training available in the United States. Dr. Humphreys has performed more than 5,000 successful spine surgeries over a 25 year career.

At age 48, Dr. Craig Humphreys, a fellowship-trained orthopedic surgeon, left a busy spine practice in Tennessee to return home to where he grew up — Alaska. Dr. Humphreys’ goal was to provide the most advanced spine care for Alaska residents, particularly those in the Kenai region of the Central Peninsula. Traditionally, those people living with back pain or neck pain in places like Soldotna, Kenai, Anchor Point and Homer, often faced a three hour drive to Anchorage. The goal of Kenai Spine was to provide a more convenient option for treatment of back and neck problems.

Dr. Craig Humphreys grew up in Alaska with his family, entrenched in the local community in Anchorage. His dad, Richard Gene Humphreys, first arrived in Alaska in 1955 working on the early warning defense system for the United States under an air force contract with International Telephone & Telegraph. Craig’s mother, Carolyn Humphreys, started elementary school teaching in Anchorage in 1970 at Northern Lights, Tudor, Scenic Park and Denali elementary schools, and and continued teaching in Alaska for 25 years. Dr. Humphreys attended Sand Lake/Gladys Wood Elementary School in Anchorage, and then Dimond/Mears Middle School and High School, graduating in 1981.

During the summers, to save money for college, Craig got exposed to all of Alaska, doing heavy labor working long hours on the North Slope with oil companies. The long workdays in the summer enabled him to save enough money to attend The University of Notre Dame where he earned his undergraduate degree in biology.

After graduating from the University of Notre Dame, he attended Loyola Stritch School of Medicine where he received his medical degree. He then completed an Internship and Residency at Loyola University Medical Center while also volunteering time as an MD in other countries, including India, St. Lucia and Lithuania.

Dr. Humphreys then completed a Fellowship in Orthopedic Spine Surgery at The Medical College of Wisconsin in Milwaukee. In 1996, he joined the Center for Sports Medicine and Orthopaedics in Chattanooga, Tennessee, where he practiced for more than 15 years — attracting complex spine patients from across Tennessee and northern Georgia.

Through a long career as a spine surgeon, Dr. Humphreys was involved in spinal research and has contributed to more than 70 publications. He has designed spinal implants that maintain motion in the spine and instrumentation related to minimally invasive spine surgery.

Dr. Humphreys is the co-inventor of a new artificial disc for the low back called “Balanced Back”. This new artificial disc for the lumbar spine is significant in that it enables spine surgeons to replace a herniated disc from the back of the spine rather than going through the abdomen, which can be a more complex surgery working around internal organs. The Balanced Back disc is designed like two halves of a donut which can be inserted around the spine and then reconnected. More information about the Balanced Back artificial disc is at www.BalancedBack.com. The intent of an artificial disc is to preserve the natural motion of the spine, replicating the normal function of a healthy disc. The Balanced Back artificial disc design also provides a more correct and natural sagittal balance of the lumbar spine than many other artificial discs. (More information at BalancedBack.com.)

On a personal level, Dr. Humphreys is married with three children. The entire family enjoys the outdoors. He is an avid fisherman and outdoorsman. Over the years practicing medicine in Tennessee, Dr. Humphreys always wanted to return at some point to where he grew up in Alaska. Even during his medical career in Tennessee, he maintained the family cabin on the Kenai River, visiting there several times a year to enjoy the beautiful summers in Alaska. On their visits the family enjoyed hiking and salmon fishing.

Dr. Humphreys is a Diplomate of the American Board of Orthopaedic Surgery, a member of the American Academy of Orthopaedic Surgeons and the American Spinal Injury Association.
Certifications:

Certifications:

Diplomate of the American Board of Orthopaedic Surgery

Associations:

American Academy of Orthopaedic Surgeons
American Spinal Injury Association

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John L. Andreshak, MD, FAAOS
Board Certified Orthopedic Surgeon
Fellowship-Trained Spine Surgeon

Dr. Andreshak has more than 25 years experience in the treatment of adult spine conditions. He specializes in degenerative spine conditions, artificial disc replacement in the cervical spine, spinal fusion, microdiscectomy and minimally invasive spine surgery. 

Dr Andreshak started his career as a Rocket Scientist in the Air Force after graduating from the US Air Force Academy. He received his medical degree from Rosalind Franklin University of Medicine and Science in Chicago. He then completed his Orthopaedic Surgery Training at Loyola University Medical Center in Chicago. He completed a fellowship in spine surgery at the world-renowned Mayo Clinic in Rochester, Minnesota.  A fellowship is the highest level of medical education in the U.S. In the spine surgery fellowship program at Mayo Clinic, the orthopedic surgeon spends a year in intense training, handling the most complex spine surgery cases that come to the Mayo Clinic from around the world. Each year patients travel to the Mayo Clinic from across the U.S. and from more than 150 different countries. Mayo Clinic has been ranked #1 in the nation over several years by U.S. News and World Report. 

After completing his spine surgery fellowship, Dr. Andreshak served in the US Air Force becoming Chief of Spine surgery and serving in Operation Enduring Freedom, the effort against terrorism with forces based in Afghanistan. 

After leaving the Air Force medical corps he maintained an active spine surgery practice for many years in Chicago at Northwestern Medicine Regional Medical Group. Northwestern is one of the largest providers of healthcare in the Chicago area. The large medical group includes more than 4,000 physicians and specialists and 30,000 employees. Northwestern Memorial has been ranked by US News & World Report as the #1 hospital in Illinois.

In 2017, Dr. Andreshak relocated to Alaska from the Chicago area to pursue his enjoyment of hunting and fishing. Dr. Andreshak is a Fellow of the American Academy of Orthopaedic Surgeons (FAAOS).






Susan Reed, PA-C
Physician Assistant-Certified

Susan Reed is a certified Physician Assistant with 13 years of orthopedic experience.  She graduated from Midwestern University in 2004 and began working at Northwestern Medicine Orthopaedics.  There she assisted with spine, total joint, hand, trauma, arthroscopic and foot and ankle surgeries.  Susan also cared for a variety of orthopedic patients in an inpatient and outpatient setting.  She enjoys spending quality time with patients educating them on diagnoses, procedures and recovery. In her free time she enjoys spending time with family and friends, as well as hiking with her dogs, cooking, reading and fishing.






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Kenai Spine specializes 100% in spine surgery. Dr. Craig Humphreys and Dr. Andreshak are both featured on the national site CentersforArtificialDisc.com as authors on the subject of artificial disc replacement. Dr. Andreshak and Dr. Humphreys are a regional referral point for patients from across the State of Alaska. Kenai Spine provides several motion preservation surgical options to spinal fusion. The Centers for Artificial Disc web site has content specific to disc replacement options and alternatives to spinal fusion. If you’ve been told you need a spinal fusion, Kenai Spine can provide a second opinion for neck surgery. Click here to visit the Centers for Artificial Disc.

Patient Success Stories
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Surgery repairs damaged disc and helps Jill get back to life!

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Artificial Disc Replacement gets Arthur back to work.

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Local veternarian back to helping patients after Spinal Stenosis.

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Surgery helps Sherry get back to traveling the world.

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Bob

Surgery repairs damaged disc and returns outdoorsman to activity.

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Paramedic gets back to life with Kenai Spine.

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Healthcare CEO back on the job after pain relieving spine surgery.

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School administrator recovers from back pain without surgery.

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Dog sled champion back on the trails after non-surgical treatment.

Educational Resources
Medical Animations

Watch various medical animations to learn about conditions and treatment options.

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View medical illustrations that help you understand pain symptoms.

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Learn about special exercises and stretches that can relieve pain and help rehab muscles and joints.

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Learn about minimally invasive surgery techniques that enable patients to go home the same day.

Where to find us

Kenai Spine is a regional referral center for the assessment, diagnosis and treatment of back pain and neck pain. This includes patients with simple back and neck strain as well as the most complex spine surgery patient.  Kenai Spine is the only spine center in the State of Alaska to be included in SpineCenterNetwork.com, an exclusive national listing of spine centers of excellence that meet credentialing criteria. With a main office in Soldotna, Alaska, Kenai Spine has a multi-disciplinary staff and two fellowship-trained spine surgeons that provide assessment and treatment of back pain and neck pain problems. The spine center is a resource for those living on the Kenai Peninsula, residents of Anchorage as well as the Mat-Su Valley, including Wasilla, Palmer and Eagle River.  Click here for directions to our main office in Soldotna on the Kenai Peninsula.

Physician Bios
Medical Animations

S. Craig Humphreys, MD
Board Certified Orthopedic Surgeon
Fellowship-Trained Spine Surgeon

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John L. Andreshak, MD
Board Certified Orthopedic Surgeon
Fellowship-Trained Spine Surgeon

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Susan Reed, PA-C
Physician Assistant
Certified


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