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Cornerstone Running Man

All of the Cornerstone locations have ABC certified practitioners with Washington State licensure to provide the highest standard of care available in the industry. Practitioners and fitters are the individuals who evaluate and provide treatment directly to patients.

Our friendly staff works hard to make you feel welcome and to facilitate proper insurance coverage of your device. We can oversee insurance rules and regulations with an in-house Medicare compliance officer. We have been recognized as a leader in the industry by the American Board of Certification. We also have an excellent in-house billing department. As a team, we strive to work together to serve you.

Cornerstone has an in-house fabrication department with ABC Registered technicians. Our technicians undergo regular continuing education to learn the latest and best techniques to fabricate the highest quality devices. Unlike other O&P firms that have to outsource fabrication, our in-house fab dept. helps us keep turnaround time very fast. In-house fabrication allows us to develop devices to the highest quality standards.

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"To be the premier provider of patient-centered care, committed to maximizing our patients' mobility potential while fostering a positive culture for our team. We will accomplish this by providing exceptional patient care, utilizing cutting-edge technology, and continuously improving our practices. Our vision is to create a culture that values and supports our team members, where they feel empowered to innovate and grow both professionally and personally. We will encourage a problem-solving mentality and a commitment to continuous learning, which will enable us to continuously enhance our care delivery and improve patient outcomes. By fostering a positive and collaborative work environment, we will attract and retain top talent, ensuring our patients receive the highest quality care and achieve their mobility goals."


1/   Empathy: Patient care & active listening

2/   Integrity: Honesty, ethics, high moral standards

3/   Innovation and continuous improvement: Continuously refining our processes and the use of the most current technology 

4/   Collaboration: With team members, patients and colleagues

5/   Respect: Each other and our patients

6/   Family: Our company family and our personal families

7/   Service: Putting our patient's and each other's needs first 


Dave Hughes, CPO, LPO Professional Headshot

Dave Hughes, CPO, LPO


Everett Office

The owner of Cornerstone P & O since 1998, overseeing the company’s daily operations. He specializes in all types of prosthetic and orthotic patient care and serves as an adjunct lecturer with keen interest in Lean Manufacturing principles. ​ Medical Degree: University of Washington School of Medicine – Rehabilitation Medicine Bachelor of Science in Prosthetics & Orthotics, Seattle 1984 ​ Licenses: American Board Certified & Washington State Licensure ​ Awards: 2019 Distinguished Practitioner Award in American Academy of Orthotists & Prosthetists

Mike Smith, CP, LPO, Professional Headshot

Mike Smith, CP, LPO


Everett Office

Mike Smith, CP, LPO, is the Director of Clinical Operations for Cornerstone Prosthetics and Orthotics and specializes in all types of prosthetic patient care including above knee amputation and hip disarticulation, microprocessor knees, below knee amputation casting systems, hydraulic ankles, and myoelectric arms for upper extremity limb loss. He also serves as the current Chairman of the WA Department of Health Orthotic and Prosthetic Advisory Committee and Licensure Board. After serving two military combat tours in Iraq, Mike developed a keen interest in amputee recovery, prosthetic care, and improving functional mobility. He has 10 years of clinical experience and completed his residency at the VA Puget Sound Health Care System in Seattle, WA. Medical Degree: University of Washington School of Medicine – Rehabilitation Medicine Bachelor of Science in Prosthetics & Orthotics, Seattle 2011 Residency: VA Puget Sound Health Care, Seattle, WA & Cornerstone P&O Licenses: American Board Certified & Washington State Licensure

Shawna Ziemer, CPO, LPO Professional Headshot

Shawna Ziemer, CPO, LPO


Everett Office

After completing her first degree in Oklahoma, Shawna spent several years as a social worker before completing a Prosthetics and Orthotics degree at the University of Washington. Shawna chose this field because she enjoys helping patients increase their independence and meet personal goals. Shawna's favorite pastimes include playing soccer, hot yoga, and chasing after her kids. She looks forward to helping others continue participating in their favorite activities! Degree: Rehabilitation Medicine Master of Science in Prosthetics and Orthotics, (University of Washington, 2014) and Bachelor of Business Administration (University of Oklahoma, 2005) Residency: VA Puget Sound Health Care, Seattle, WA & Cornerstone P&O Licenses: American Board Certified & Washington State Licensure

Annie Gibbs, LP Professional Headshot

Annie Gibbs, LP


Everett Office

Annie spent several years working as a certified Athletic Trainer in a physical therapy setting after undergrad. She has experience in sports medicine rehabilitation and gait training. Annie understands the importance of communication within an interdisciplinary team to ensure her patients get the best treatment possible. She has always enjoyed helping her patients get back to functional independence and the activates they love. In her free time, she loves hiking with her dog, camping and competing in triathlons. Degree: Master of Science in Orthotics and Prosthetics (Baylor College of Medicine, 2021) and Bachelor of Science in Athletic Training (University of Georgia, 2013) Residency: Combined 18-month Residency, multiple sites Licenses: Board Certified Athletic Trainer

Thomas Broselle, CPO, LPO Professional Headshot

Thomas Broselle, CPO, LPO

Clinical Manager
Bellingham Office

Thomas has been a part of the Cornerstone P & O team since 1992. Thomas oversees the busy Bellingham office and specializes in all types of O & P care. Thomas enjoys spending his free time with his wife, four children, and friends. His hobbies include skiing, fishing, hunting, and wood work. Degree: University of Washington School of Medicine – Rehabilitation Medicine Bachelor of Science in Prosthetics & Orthotics, Seattle 1992 Licenses: American Board Certified & Washington State Licensure

Tuan Duong, CPO, LPO Professional Headshot

Tuan Duong, CPO, LPO

Edmonds Office

Tuan spent several years working as a patient service specialist for the physical therapy department at the University of Washington Medical Center before completing his Orthotics and Prosthetics education at Loma Linda University. He enjoys assisting patients and the art of crafting devices to improve their quality of life. His favorite part of the job is bringing smiles to his patients as they are recovering and are learning new ways to restore their functional independence. He likes spending time with family, hiking with friends, and exploring 3D printing technology in his free time. Degree: Master of Science in Orthotics and Prosthetics (Loma Linda University, 2016) and Bachelor of Arts in Psychology (University of Washington, 2010) Residency: Everett Cornerstone P&O Resident Orthotist, VA Puget Sound Resident Prosthetist Licenses: American Board Certified & Washington State Licensure

Edward Strachan, CPO, LPO Professional Headshot

Edward Strachan, CPO, LPO


Mt. Vernon Office

Edward enjoys being a Prosthetist-Orthotist. He feels it’s an amazing field that draws on a wide range of health care, engineering and fabrication skills. He provides the best care possible for all of his patients through an attention to details and the patients specific needs. Edward believes in utilizing a deep tool set that includes traditional methods and the newest innovations in technology. Navigating healthcare can be challenging, he will be available to keep you informed so that any questions or concerns are resolved quickly. Edward builds the trust of his patients by being reliable and accountable. Knowing that patients often arrive during a stressful and difficult period of their lives, Edward takes care to walk through the process. He has developed a high quality and innovative care style through years of experience working in some the nation’s best medical facilities. Edward strives to be accessible and respectful of his patients time. We are all unique and he believes that prostheses and orthoses must be personalized to their specific needs. Edward is delighted to be joining the skilled, collaborative and dedicated team at Cornerstone Orthotics and Prosthetics. He has experience in all levels of orthotic and prosthetic care with additional specialization in upper extremity prosthetic technology and complex lower extremity prosthetic fitting. He lives in Lake Stevens with his wife and their three boys. He loves to be outside, especially in the mountains skiing, running or hiking. Degree: Honors Bachelor of Kinesiology (2005), Bachelor of Science- Prosthetic and Orthotics (2007), Master’s of Public Health (2020) Licenses: American Board for Certification – Prosthetist-Orthotist (2010), Licensed Prosthetist-Orthotist Washington State

Alice Stride, CPO, LPO Professional Headshot

Alice Stride, CPO, LPO

Clinical Manager

Sequim Office

Alice has been a part of the Cornerstone P & O team since 1990, and has been clinical manager of the Mt. Vernon office since 1999. As well as overseeing the busy office, Alice is a mentor to visiting residents and a long time supporter for a number of outreach programs and organizations. She is looking forward to her move and relocation to our Sequim Clinic as clinical manager. A semi-retirement for most, but we all know, Alice has other ideas. Alice spends her free time with her husband Robert of 35 years, their two grown children, and enjoys gatherings with local family/friends as well as visits with their extended Ohana in Hawaii. Degree: University of Washington School of Medicine – Rehabilitation Medicine Bachelor of Science in Prosthetics & Orthotics, and Bachelor of Arts in General Arts, University of Washington, Seattle 1986 Licenses: American Board Certified & Washington State Licensure

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Henry Bennett, CPO, LPO, FAAOP Professional Headshot

Henry Bennett, CPO, LPO, FAAOP

Clinical Manager

Advanced Prosthetic Solutions

Spokane APS is a Cornerstone Office Henry has had a specialized career in Prosthetics and Orthotics since 1988. He has a true passion for assisting in each step of the rehabilitation journey and staying at the forefront of industry advancements.

Clinicians adjusting a Cornerstone Dynamic Brace/Fabtech Reaktiv Brace
“Dave and the staff have been wonderful with outstanding service. They made a Dynamic brace for my right ankle. I avoided major reconstructive surgery of my ankle and am now hiking and biking again after 2 years. Highly recommended!”

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