The donation and transplant community works together to save lives through transplantation. It encompasses every transplant center, organ procurement organization, histocompatibility lab, donor hospital and countless other organizations and individuals.

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UNOS Community

Summer 2021 public comment open Aug. 3 - Sept. 30

Member organizations

Transplant hospitals, organ procurement organizations (OPOs) and histocompatibility laboratories in the United States all belong to UNOS.

Learn more about member organizations


The US is divided into 11 geographic regions to facilitate transplantation:

View list of states in regions
  • Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Eastern Vermont
  • Region 2: Delaware, District of Columbia, Maryland, New Jersey, Pennsylvania, West Virginia, Northern Virginia
  • Region 3: Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, Puerto Rico
  • Region 4: Oklahoma, Texas
  • Region 5: Arizona, California, Nevada, New Mexico, Utah
  • Region 6: Alaska, Hawaii, Idaho, Montana, Oregon, Washington
  • Region 7: Illinois, Minnesota, North Dakota, South Dakota, Wisconsin
  • Region 8: Colorado, Iowa, Kansas, Missouri, Nebraska, Wyoming
  • Region 9: New York, Western Vermont
  • Region 10: Indiana, Michigan, Ohio
  • Region 11: Kentucky, North Carolina, South Carolina, Tennessee, Virginia
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