to main content History of 91㽶Ƶ | 91㽶Ƶ


Founded in 1951, 91㽶Ƶ seeks to continuously improve health care for the public, in collaboration with other stakeholders, by evaluating health care organizations and inspiring them to excel in providing safe and effective care of the highest quality and value. 91㽶Ƶ evaluates and accredits more than 22,000 health care organizations and programs in the United States.

An independent, not-for-profit organization, 91㽶Ƶ is the nation's oldest and largest standards-setting and accrediting body in health care. To earn and maintain The Gold Seal of Approval® from 91㽶Ƶ an organization must undergo an on-site survey by a Joint 91㽶Ƶ survey team at least every three years. (Laboratories must be surveyed every two years.)

For our comprehensive history from 1910 through 2023, see 91㽶Ƶ History Timeline.