
About Us
Our mission is to provide holistic healing, individualized for each patient. We are here to serve you, so that you can live life at its peak.
Our Values
Service
We strive to provide an exceptional experience from the initial phone call to the last visit. We are here to serve the people in our communities, utilizing our unique, God-given talents.
Growth
We seek to assist our patients in reaching their full potential, improving (growing) in mind, body, and spirit
Innovation
We utilize our knowledge, collaboration amongst team members, and a holistic approach to healing to provide exceptional care to patients in a unique, individualized way.
Meet The Team
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Erin Fiedler, Physical Therapist
Doctor of Physical Therapy, PRC
Erin Fiedler is a doctor of physical therapy (DPT) and owner of Peak Motion Physical Therapy. Following a series of personal and family injuries during her formative years, she decided to pursue a career in physical therapy. Erin is passionate about making a difference in people’s movement patterns and lives! She earned her Doctorate of Physical Therapy degree from the University of Nebraska Medical Center in 2016 and has been treating patients in Wyoming and South Dakota ever since. Erin has a strong interest in Postural Restoration, which is a holistic treatment approach that helps to restore balance (symmetry) through proper movement and respiration (breathing) for decreased pain and improved function
When not in the clinic, you can find Erin spending time with her husband, two children, and vizsla, running, hiking, or baking something delicious!

Kim Cockrum, Physical Therapist, MPT
Kim Cockrum has lived in and been practicing physical therapy in Spearfish since moving here in 2004. She absolutely loves having the opportunity and privilege to serve the people in the community which she lives. Kim is excited to be a part of the Peak Motion team that purposes to treat with a holistic approach. In addition to conventional physical therapy methods of evaluation and treatment, Postural Restoration (PRI) is an approach that she uses to help restore balanced movement patterns for less pain and improved function. Outside of work Kim cherishes spending time with family and friends and enjoys activities in the hills year-round.
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Peggy Voorhees, Patient Care Coordinator (Spearfish)
Peggy has lived in the Spearfish area since 1983. She had her own cleaning business for 23 years; after her 3 children were raised, she closed her business and went OTR trucking with her husband for 5 years. It was a great opportunity to see so much of the US.
She now works for Peak Motion at the front desk. She loves working at a place where the focus is to help people live their best lives. Outside of work she enjoys gardening, reading and spending time with friends and family. Her greatest joy is spending time with her grandchildren.