Our Staff

Providing YOU with the BEST Therapists for the BEST CARE

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Amanda Thome, PT, DPT 
  • Vestibular/Concussion
  • Sacroiliac Disorders-Hesch Sacroiliac Practitioner
  • Mulligan Trained Upper & Lower Quarter
  • Chronic Pain disorders
  • Maitland Trained-Spine

Amanda graduated magna cum laude with her Doctorate in Physical Therapy from Columbia University in 2010. Amanda got her bachelors in science degree from Ursinus College in Collegeville, PA in 2007. During her time at Ursinus College Amanda was a NCAA track and field athlete. 

Since graduating Amanda has trained for and completed three full marathons. She continues to stay active through cycling and riding her horse Chinook.


In the clinic, Amanda uses skills she gained working for nationally top-ranked rehabilitation facilities and the skills she continues to develop through rigorous continuing education training. Amanda has a strong background in manual therapy and the treatment of acute and chronic pain conditions including neuropathy pain, post surgical rehabilitation, balance and vestibular disorders as well as those with neurological conditions. Amanda is one of only a few ImPACT concussion trained physical therapists in Idaho. She has taken dual certifications in Vestibular and Concussion therapy as well. Amanda has taken continuing education training in the Mulligan and Maitland techniques and is a HSP Hesch Sacroiliac Practitioner.


 It is Amanda's belief that each patient presentation and treatment interventions are unique and need to be tailored to that person. 

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Vashti Graphenteen , PT, DPT 
  • Female Pelvic Floor Disorders
  • Sacroiliac Disorders-Hesch Sacroiliac Practitioner
  • Mulligan Trained Upper Quarter
  • Cancer Rehabilitation
  • Chronic Pain

Vashti graduated with her Doctorate in Physical Therapy from the University of South Dakota in 2013. Prior to that, she received her Bachelor of Science Degree in Exercise Science from Minnesota State University, Mankato where she also worked as a wellness coach and personal trainer. Since becoming a physical therapist, Vashti has worked in various rehab facilities where she has treated patients with many different orthopedic and neurological conditions. She has also received advanced training in cancer rehabilitation and lymphedema and has completed continuing education courses focused on female pelvic floor rehabilitation and chronic pain management. 

Vashti is extremely passionate about health and wellness, and ultimately, caring  for others. Her primary goal is to help maximize quality of life and functional mobility by tailoring each patient’s treatment plan specifically to their needs. Vashti recognizes that patients often warrant a multifaceted approach and strives to support each of her patients on their unique journey of recovery through physical therapy.

When Vashti is not at Cornerstone, she’s spending time with her family, enjoying the outdoors, walking her dog, running, rock climbing, cooking, or reading a good book.

Jessica Seaburg , PT, DPT, OCS
  • Board Certified Orthopedic Clinical Specialist (OCS)

  • Functional Dry Needling Provider

  • Selective Functional Movement Assessment (SMFA)

  • Graston Technique Specialist

  • Neck and back pain

  • Acute and chronic pain

  • Balance and fall prevention

Jessica has greatly enjoyed her career as a Physical Therapist since graduating as a Doctor of Physical Therapy from Old Dominion University in 2012. She excels in orthopedic care and is a Board Certified Clinical Specialist in Orthopedic Physical Therapy (OCS). She is an expert at restoring functional movement and prescribing effective therapeutic exercises. Jessica also provides evidence-based manual therapies, such as Functional Dry Needling, joint mobilization and manipulation, and instrument-assisted soft tissue mobilization. She has advanced training in treating dizziness (vestibular rehabilitation) and balance impairments. She is continually learning through continuing education to better serve each patient. Jessica takes the time needed to provide the best care she possibly can for her patients. One of her greatest joys is seeing a patient overcome pain and disability and return to their favorite activities! When she is not working, Jessica loves spending time at home and in the great outdoors with her husband, family and friends, and golden retriever. Some of her favorite hobbies are gardening, playing ping-pong, cooking, and playing the violin.

Matthew Somerville, PT, DPT
  • Orthopedics

  • Acute and chronic pain

  • Balance and fall prevention

  • Post Surgical Rehabilitation

  • Neurological Rehabilitation

  • Wound care

Matt graduated from State University of New York with a BA in Science 2002. To the benefit of his patients and peers he found his way into Physical Therapy after graduating with his Doctorate in Physical Therapy from Shenandoah University in Northern Virginia in 2012. After becoming a PT he spent extensive time studying and practicing to become a wound care specialist for which he became certified after two years of training. Matt joins the Cornerstone team bringing his strong interpersonal skills, manual therapy skills and effective exercise prescriptions for the various clients and conditions we see. When not at Cornerstone Matt can be found skiing, mountain biking, sailing, whitewater kayaking and spending time with his wife and children taking in all that North Idaho offers.

Chris Rabe, PTA

Chris Rabe attended and graduated with honors from the Daytona State College Physical Therapist Assistant Program in May of 2014. Since passing the national exam and obtaining licenses in multiple states, Chris has worked in various facilities from coast to coast increasing his knowledge and skill base through hands-on training and and online education, all to improve patient recovery and overall health.


Chris enjoys rehabilitating orthopedic patients with an emphasis on strengthening musculature and achieving sound functional range of motion and control so the patient can get back to their prior level of function. On his time off Chris enjoys outdoor activities such as snowboarding, biking, hiking, and ultimate frisbee.

Susan Colman, office administrator
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Susan Colman has been a bicoastal gal her entire life from Northern California to NYC but now resides in the beautiful Selle Valley of Sandpoint.  She started out with a B.A. in Music and then extended her education through the New School’s Creative Arts Therapy program in NYC.


Rooted from a creative background, Susan began exploring the benefits of alternative healing through meditation, yoga, prayer and energy work. She enrolled in the Institute for Integrative Nutrition (NYC) and graduated as a Certified Holistic Health Counselor in 2004.


For over a decade she has guided her clients and friends towards a healthier lifestyle through the implementation of eating “whole foods” and exercise.  Also, being a Reiki Master since 2006, she is a strong believer in combining Eastern and Western medicine as a well-rounded approach to health and wellness.  She has been helping run Physical Therapy and Chiropractic practices since 1997 and is excited to join Cornerstone Physical Therapy once again.