Better school for health care?
Both are ranked very high - 3 and 4 respectively.
I have a friend at HCM and he enjoys it very much (I'm assuming you would do that program at Wharton). I also know how strong Kellogg is for Health Care, particularly in Chicago, with Baxter and Abbott Labs traditionally recruiting pretty heavily from there, and being based in the Chicagoland area. Tekada also has it's US headquarters in the Chicago burbs as well. I know less about HC opportunities from Wharton, but am sure it's a similar list.
Visit both schools and talk to alumni in places you would want to work, if possible.
You aren't going wrong either way.