I've heard good things about Carnegie Mellon's (Heinz School) program for physicians.
http://www.heinz.cmu.edu/school-of-public-policy-management/medical-management-mmm/index.aspx
Are you looking to stay in healthcare admin, or branch out into traditional MBA land? They also have a Masters in Healthcare Policy if your interests lie in the political arena. I would love to pursue another degree (executive MBA, etc), but it's a lot of work and $$ with limited return unless I want to give up anesthesia. Personally, I think the academic chairs should all be MBAs and not big name researchers. It would solve a lot of problems. It helps to speak the same language as the hospital execs. The big researcher can still be vice chair/research chair, etc. with a big bonus/stipend/endowment/office

and 80% protected time. Think how much more research they could do and all the junior faculty they could effectively guide without a 50% admin time burden running the department. It's really a waste of talent.