Website: https://seaislenews.com/news/2023/feb/17/john-r-callen-of-medrehab-alliance-discusses-the-i/ Address: Chicago, Illinois John R. Callen is the owner of Joint & Neuro Rehab Associates, providing outsourced rehabilitation staffing for various healthcare services, including physical therapy, speech language pathology, and occupational therapy. Under John R. Callen’s leadership, the organization is renowned for its expertise in both management and clinical operations, empowering collaborators to... read full review »