What if a worker disagrees with our provider’s diagnosis?

Q: “One of our employees said he twisted his knee at work. The supervisor sent him to Concentra, where the doctor took X-rays and recommended he take six therapy treatments. The employee said he thought he had a torn ligament and wanted an MRI, but Concentra does not have MRI equipment. Since the employee refused the treatment suggested by the doctor at Concentra, do we have the obligation to send him to a hospital that can take MRIs?” – Vincent, Texas