w9bsd
Member
Here's the latest ID plan I could find, and it seems to still match up to what's been active. According to this list, 4000-4999 all belong to Dept of Health Services.
http://interop.wi.gov/docview.asp?docid=19975&locid=166
http://interop.wi.gov/docview.asp?docid=19975&locid=166