See the composition of the U.S. healthcare industry Medical Group Practice Report, January 2012 Physician Specialty Count by State, October 2011 Home Healthcare Agencies, August 2011
Physician Lists: 1.2 million contacts at 234,000 offices
Hospital Lists: 236,000 contacts at 6,700 sites
Pharmacy Lists: 166,000 contacts at 60,000 locations
Nursing Home Lists: 191,191 contacts at 19,907 homes
Medical Group Practice Report, 
LIST COUNTS
Physician Lists: 1.2 million contacts at 234,000 offices
