It's not long ago that Mississippi has decided to plan for establishing health houses model to serve its medically undeserved areas. They picked the Iranian model and I would say it was just a right pick. Iran started its primary preventive health care network more than 40 years back. The plan has shown a high degree of success. Although the model and its implementation has not been fully presented through international publications and media , the Mississippi's collaboration with Iranian health officials on building its counterpart in the US may help the plan get international recognition. Below is a link to a website through which you can find useful information on this collaborative effort.
http://www.fic.nih.gov/news/publications/global_health_matters/2009/1209_health-house.htm