Does a nursing home have the right to refuse excepting a patient because they need dialysis?

I have offered to transport my grandma to and from her appointment and whats strange is the nursing home already has a patient they take to and from dialysis so I'm not sure how they can tell me that they only except one patient with that need at a time when I know for a fact they have had more then one dialysis patient at a time.

View this post on my blog: http://travelnursesuccess.com/does-a-nursing-home-have-the-right-to-refuse-excepting-a-patient-because-they-need-dialysis