The Clinical Team

Knittel Ansa, CPO, BSE

Knittel is a Pennsylvania State Board of Medicine licensed and an American Board for Certification (ABC) certified Prosthetist-Orthotist with a background in Biomedical Engineering.  Knittel is a graduate from the University of Hartford’s Newington Certificate Program. He is best known in the field of Prosthetics & Orthotics for his expertise in Pediatrics Orthotic Management especially in Scoliosis, Trauma Bracing, and Lower Extremity Prosthesis. Knittel also specializes in Cranial Remolding Helmets, Sure Step, Walk Aide, Providence Brace, Charleston Brace, Plie MPK, Pneumatic Knee and Ankle Prosthesis, and LIM Infinite Socket Technology. His professional memberships include American Academy of Orthotists and Prosthetists, Association of Children’s Prosthetic-Orthotic Clinics, and Amputee Coalition of America. With over 10 years of experience, Knittel seeks to provide the type of care that encourages patients to Embrace Possibilities.

David Smeresky, MSPO

David is a Pennsylvania State Board of Medicine Graduate Licensed Orthotist currently in the Aspire Residency program. He comes with a comprehensive background in Bioengineering with a concentration in Biomechanics and Materials from University of Pittsburgh. In addition, David is also pursuing a Ph.D. with a focus on Device Design and Diabetic Foot Wound prevention. David’s research interests are Wound Care, Phantom Limb Pain Management, Orthotic Device Design, 3D Printing, and Outcome Measures. David is dedicated to improving care through research and ensuring effective treatments though outcome measures. With almost 5 years of experience in O&P and using his background in bioengineering, David wants to improve the quality of life for all his patients while helping them Embrace Possibilities.


Jessica Harbold, MA

Jessica is Aspire’s patient care coordinator. She is a graduate from YTI Career Institute with an Associate’s Degree in Specialized Technology. Jessica has over 10 years of experience working in medical offices. Jessica comes with great experience in billing, insurance authorizations and coordination of patients and clinical staff scheduling. Jessica strives to play an integral part in the patient management process and ensures that all patients receive excellent service with respect. Through her excellent customer service, she will be building new relationships with referral sources and helping patients Embrace Possibilities.