
Overview
Mary Kate Thayer, MD, is a fellowship-trained orthopedic surgeon who specializes in hand and upper extremity surgery. She cares for both adults and children.Dr. Thayer received her BA in psychology from the University of Washington and her MD from Saint Louis University School of Medicine where she graduated Alpha Omega Alpha (highest honors). She then returned home to the Northwest and completed her orthopedic surgery residency at the University of Washington. To finalize her training, she relocated to Baltimore, Maryland, and completed a fellowship in hand and upper extremity surgery at the Curtis National Hand Center, one of the top fellowship programs in the country. There, she received world-class training in the treatment of both common and complex disorders of the hand and upper extremity.Dr. Thayer is published in the topics of hand, wrist, and trauma surgery and has presented much of this research at national and local meetings. In addition, she has a passion for mentoring and education. She has participated in the Perry Outreach Program and the Ruth Jackson Orthopaedic Society’s mentorship program. These programs both share a goal of inspiring young women to become leaders in orthopedic surgery.Dr. Thayer finds satisfaction in helping patients restore function of their upper extremity to return to work, family, hobbies, and sports. She works directly with patients to develop individualized care plans, both surgical and non-surgical, to achieve these goals. This is achieved through open communication with patients and education about the diagnosis and treatment options. She prides herself on a thorough and thoughtful approach to each patient. She has a special interest in fractures, sports injuries, arthritis, and nerve conditions of the upper extremity.Dr. Thayer is a local Washingtonian. In her free time, she enjoys spending time with her husband, Lew, and her daughter. She is an avid runner, cooking enthusiast, and Seattle sports fan.
Dr. Thayer is rated as an Advanced provider by MediFind in the treatment of Rhizarthrosis. Her top areas of expertise are Tennis Elbow, Rhizarthrosis, Ganglion Cyst, and Trigger Thumb.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- INSURANCE PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE
- PPO
- EPO
- HMO
- PPO
- EPO
- HMO
- HMO
- MANAGED MEDICAID PLAN
- HMO
- POS
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER MEDICARE
- POS
- PPO
Accepted plan types not found. Please verify directly with the provider.
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- EPO
- PPO
- EPO
- PPO
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- EPO
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
510 8th Ave NE, Suite 200, Issaquah, WA 98029
3101 Northup Way, Suite 201, Bellevue, WA 98004
Additional Areas of Focus
Dr. Thayer has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.
Proliance Orthopaedics & Sports Medicine
Matthew J. Robon, MD, is board-certified in hand and orthopedic surgery. He treats patients with all types of orthopedic fractures in addition to his specialty focus in hand and upper extremity surgery.In his years as a competitive All-American swimmer, he endured years of medical treatment for multiple orthopedic injuries. These experiences shaped his practice philosophy today: good patient care involves making accurate and timely diagnoses, but equally important is treating patients with respect and compassion. By helping his patients understand their problem, he can treat the immediate problem and hopefully help them avoid future injuries and pain.Dr. Robon is married and has three sons. He and his wife enjoy exploring the great outdoors by hiking, golfing, and trail running in the Cascades. Dr. Robon is rated as a Distinguished provider by MediFind in the treatment of Rhizarthrosis. His top areas of expertise are Trigger Thumb, Dupuytren Contracture, Rhizarthrosis, and Carpal Tunnel Syndrome.
Proliance Orthopedic Associates
John Howlett, MD, is a board-certified, fellowship-trained orthopedic surgeon with a special interest in fracture care. He has completed additional fellowship training in hand and upper extremity surgery, including trauma, reconstruction, pediatric as well as microvascular surgery.He likes to remind himself that the origin of the Latin word “doctor” is “teacher,” and he considers it an important part of his role as a doctor to educate his patients about the conditions that are affecting them. He believes an informed and knowledgeable patient can participate more effectively in his or her own healing. As a former teacher who holds a master’s degree in education, Dr. Howlett deeply enjoys this aspect of working with patients.One of the experiences that shaped his career trajectory was his work as a counselor at The Hole in the Wall Gang Camp, founded by Paul Newman for children with cancer and other blood-related disorders. Witnessing the courage and energy of these children convinced him that healing involves more than medication and surgery. This experience led him to pursue his medical degree, where he saw an opportunity to combine his interest in caring for people with his passion for teaching.Having grown up in Washington enjoying hiking, backpacking, sailing, and canoeing, Dr. Howlett was eager to return to the Northwest for his residency and fellowship training. He now shares these same passions with his family. He and his wife both played soccer in college and can be found cheering on their two daughters at soccer games on the weekends. Dr. Howlett is rated as a Distinguished provider by MediFind in the treatment of Rhizarthrosis. His top areas of expertise are Carpal Tunnel Syndrome, Trigger Thumb, Ganglion Cyst, Rhizarthrosis, and Hip Replacement.
Proliance Orthopaedics & Sports Medicine
Grant R. Lohse, MD, is an orthopedic surgeon with fellowship training in hand, wrist, and elbow surgery. He cares for both adults and children. In addition to general orthopedics, he specializes in upper extremity nerve problems, tendon and ligament injuries, fractures, and arthritis.Dr. Lohse grew up in Indiana. He received his bachelor's of science in Mechanical Engineering, graduating with highest honors, from Purdue University. He went on to attend medical school at Northwestern University where he graduated Alpha Omega Alpha (highest honors). Dr. Lohse completed his orthopaedic surgery residency at the University of Washington before going onto subspecialty training in hand and upper extremity surgery at Vanderbilt University.His care philosophy is centered on education. He believes patients are best able to participate in their care when they thoroughly understand their problem and treatment options. He feels strongly that treatment must be individualized, as the same condition may affect two people very differently.Dr. Lohse enjoys spending time with this wife and three children. He also enjoys running, skiing (snow and water), hiking, and camping. Dr. Lohse is rated as a Distinguished provider by MediFind in the treatment of Rhizarthrosis. His top areas of expertise are Dupuytren Contracture, Trigger Thumb, Rhizarthrosis, Carpal Tunnel Syndrome, and Hip Replacement.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Advanced
- Carpal Tunnel SyndromeDr. Thayer isAdvanced. Learn about Carpal Tunnel Syndrome.
- Dupuytren ContractureDr. Thayer isAdvanced. Learn about Dupuytren Contracture.
- Ganglion CystDr. Thayer isAdvanced. Learn about Ganglion Cyst.
- RhizarthrosisDr. Thayer isAdvanced. Learn about Rhizarthrosis.
- Scaphoid Non-UnionDr. Thayer isAdvanced. Learn about Scaphoid Non-Union.
- TendinitisDr. Thayer isAdvanced. Learn about Tendinitis.
- Experienced
- Accessory Navicular BoneDr. Thayer isExperienced. Learn about Accessory Navicular Bone.
- Acute PainDr. Thayer isExperienced. Learn about Acute Pain.
- BursitisDr. Thayer isExperienced. Learn about Bursitis.
- Caffey DiseaseDr. Thayer isExperienced. Learn about Caffey Disease.
- Calcium Pyrophosphate ArthritisDr. Thayer isExperienced. Learn about Calcium Pyrophosphate Arthritis.
- Congenital Radioulnar SynostosisDr. Thayer isExperienced. Learn about Congenital Radioulnar Synostosis.



