Suppliers Allied Electric, Newark, and Mouser all carry Wiremold hospital grade power strips. The part numbers are ULM6-15 and ULM4-15 for the 6 and 4 outlet strips respectively.
http://www.alliedelec.com/search/productdetail.aspx?SKU=5330146
http://www.newark.com/wiremold/ulm6-6/power-outlet-strip/dp/95F1251
http://www.alliedelec.com/search/productdetail.aspx?SKU=5330146
http://www.newark.com/wiremold/ulm6-6/power-outlet-strip/dp/95F1251