Joellyn is a Lehigh University graduate with a dual degree in biology and psychology, and she is a graduate of Temple University's Doctorate in Physical Therapy Program. Joellyn, who now resides in Philadelphia, PA, has been a clinician for 18 years with 15 years of specialty in the treatment of individuals with Parkinson's disease at the Dan Aaron Parkinson's Rehabilitation Center, which is part of the University of Pennsylvania Health System. She is an adjunct professor at Drexel University, Rutgers University, and Widener University, as well as a frequent speaker at local Parkinson's disease support groups in Pennsylvania and New Jersey. Joellyn is a board member of the MSA Coalition's NJ Branch. She has been a keynote speaker at conferences hosted by CurePSP, Penn's Movement Disorder Clinic, Penn Neurosurgery, Mainline Health, and Good Shepherd Penn Partners. Joellyn is also a lab assistant for LSVT Global, and she is certified in LSVT BIG, Parkinson's Wellness and Recovery (PWR!), and Rock Steady Boxing. In 2022, Joellyn ran the NYC Marathon as a Parkinson's Champion.