The hospital I work at is undergoing a reorganization and I fear that the administration may attempt to deprofessionalize my position as the dialysis social worker. If my job title is changed to say care manager and my job description says nothing about providing clinical social work services, can the hospital say that they are meeting standards for medicare approved dialysis units?

It doesn't matter what you call it, a rose by any other name would smell as sweet. No matter what they call you, a dialysis or transplant facility must have a masters social worker to perform psychosocial assessments, do casework and groupwork services, participate in team care planning, and help patients and families access resources. The only way around this is if the social worker was hired at least 1 year prior to the publication of the ESRD regulations which were published 9/1/76. Social workers working in dialysis and transplant program who did not have masters degrees on that date were grandfathered in as long as they had the required experience and were supervised by a "qualified social worker." You can download and print the entire regulations (10/1/2001 version) from www.access.gpo.gov/nara/cfr/cfr-retrieve.html#page1 (be sure to copy and past this whole string).
Insert 42 in "Title", 405 in "Part", [leave "Section" blank], and U in
"Subpart." These regulations define the "qualified social worker" and the functions the social worker is to perform. I'd make sure your hospital administration has a copy.