Medicare is a health insurance program for:

Part B Medical Insurance 
Most people pay a monthly premium for Part B. Medicare Part B (Medical Insurance) helps cover doctors' services and outpatient care. It also covers some other medical services that Part A doesn't cover, such as some of the services of physical and occupational therapists. Part B helps pay for these covered services and supplies when they are medically necessary.

To be eligible for medical services billable under Medicare Part B.

The Senior must:

A.) Have a medical necessity for a skilled service which could be provided by a Nurse Practitioner, Physical Therapist, Occupational Therapist or Speech Therapist ordered by a physician.

B.)  A physician must order the medical service and be willing to oversee the patient’s medical care plan.

C.)  For Medicare Part B services you do not need to be homebound.

D.) Services must be provided by an agency that is certified by the Centers for Medicare and Medicaid.

To remain eligible the patient must actively respond to the care provider and remain compliant with the instructions provided by the clinical professionals providing the care and treatment.

Patients have a right to choose the Medicare provider they prefer.  The patient simply needs to tell the physician or hospital staff that he/she has a medical provider preference and the selection must be honored.