I too looked into Health Care Informatics for my Masters. I looked at colleges in Boston. All of them require at least 5 years experience in the related feild. Also , the cost was very high as the programs offerred were main stream Masters program costing 30000 a year or so. Finally I have decided to go to Northeastern CPS program that has Masters in Informatics. And the cost is about 550 per credit. I dont know how affordable you are looking at, but the H Informatics is certailny not cheap program.