(SHM) The Society of Hospital Medicine
http://www.hospitalmedicine.org/

Advisen
http://hcfpn.advisen.com/fpnHomepagep.shtml?source=fpnArticlesp#top

(ASHRM) American Society for Healthcare Risk Management
http://www.ashrm.org/

The Emergency Department Practice Management Association
http://www.edpma.com/i4a/pages/index.cfm?pageid=1

(MGMA) Medical Group Management Association
http://www.mgma.com/

(NALTO) National Association Locum Tenens Organizations
http://www.nalto.org/

(NAPR) National Association Practice Recruiters
http://www.napr.org/

The National Alliance for Insurance Education and Research
http://www.scic.com/

(PLUS) Professional Liability Underwriters Society
www.plusweb.org

(RIMS) Risk & Insurance Management Society
http://www.rims.org/

(PHA) Physician Hospitals of America
http://www.physicianhospitals.org/