UPMC Altoona Orthopaedics of the Southern Alleghenies
Photo of Orthopedic Care

Please Meet

Our Orthopaedic Physician Assistants

Erin Allison, PA-C - UPMC Altoona Orthopaedics, Altoona, PA

Erin Allison, PA-C

Erin Allison, PA-C, assists the Elite Orthopaedics physicians in surgery as well as cares for the patients in the office.

Erin received her Masters of Physician Assistant Science degree from Saint Francis University in 2004. She is certified by the National Commission on Certification of Physician Assistants.




Ryan Andrews, PA-C - UPMC Altoona Orthopaedics, Altoona, PA

Ryan Andrews, PA-C

Ryan Andrews, PA-C, assists the Elite Orthopaedics physicians in surgery as well as cares for the patients in the office.

Ryan received his Masters of Physician Assistant Science degree from DeSales University in 2002. He is certified by the National Commission on Certification of Physician Assistants.




Stephen Pyo, PA-C - UPMC Altoona Orthopaedics, Altoona, PA

Stephen Pyo, PA-C

Stephen Pyo, PA-C, assists the Elite Orthopaedics physicians in surgery as well as cares for the patients in the office.

Stephen received his Masters of Physician Assistant Science degree from Saint Francis University in 2001. He is certified by the National Commission on Certification of Physician Assistants.

Stephen Pyo's Bio




Erin Richards, PA-C - UPMC Altoona Orthopaedics, Altoona, PA

Erin Richards, PA-C

Erin Richards, PA-C, assists Elite Orthopaedics physicians in surgery as well as cares for the patients in the office.

Erin received her Masters of Physician Assistant Science degree from Saint Francis University in 2005. She is certified by the National Commission on Certification of Physician Assistants.




William Weikert, PA-C - UPMC Altoona Orthopaedics, Altoona, PA

William Weikert, PA-C

William Weikert, PA-C, is an orthopaedic physician assistant at UPMC Altoona Elite Orthopaedics. He graduated from Juniata College in 2005 and Pennsylvania College Physician Assistant Program in 2008. He has been certified by the National Commission on Certification of Physician Assistants since 2008.

William has been with UPMC Altoona Elite Orthopaedics since 2013, prior to this he worked with the Trauma Surgery team at UPMC Altoona. William sees patients in the Hollidaysburg office and assists our physicians at UPMC Altoona Hospital and UPMC Altoona Surgical Center.

Outside of the office, William is an avid outdoorsman and an active volunteer with the Blue Knob Ski Patrol and the Geeseytown Volunteer Fire Company. He and his family reside in Hollidaysburg, PA.




Jenna Zemlock, PA-C - UPMC Altoona Orthopaedics, Altoona, PA

Jenna Zemlock, PA-C

Jenna assists the UPMC Altoona Elite Orthopaedics physicians in surgery as well as cares for the patients in the office.

Jenna received her Masters of Physician Assistant Science degree from Saint Francis University in 2016. She is certified by the National Commission on Certification of Physician Assistants.