Dr. Cassabaum graduated in 1989 from Washington University in St. Louis, after having completed the Physical Therapy Program, where he received his BS and MS in Physical Therapy.

Steve practiced in St. Louis from 1989 to 1995 where he worked at the TMJ Research Center & the Orofacial Pain Center/Oral-Facial Surgery Center seeing almost exclusively TMJ patients.

He was also on faculty at Washington University presenting the TMJ lecture for the students in the
Physical Therapy program from 1989-1997; In 1995 Steve became the president and co-founder of 21st Century Rehab, PC, which is based out of Nevada, Iowa, and currently has clinics in 14 central Iowa communities. Steve received his post-professional Doctorate of Physical Therapy in 2009 from Washington University in St. Louis.

Dr. Cassabaum currently sees a varied caseload of orthopaedic patients, about which 80% of are patients with headache, cervical spine, and TMJ dysfunction. Steve also enjoys mentoring and creating a strong culture at 21st Century Rehab.

Steve has been a member of the American Physical Therapy Association for 39 years and is also a member of the Private Practice Section. He is the current legislative chair and a past president of the Iowa Physical Therapy Association. Steve also serves as a member of the Iowa Licensure Board for Physical and Occupational Therapy. Both in his work and personal life, Steve finds every moment spent with his wife, daughters, grandkids, family and friends to be the most precious.