Highly rated books published more than 15 years ago.

Bringing User Experience to Healthcare Improvement: The Concepts, Methods and Practices of Experience-based Design Paul Bate, Glenn Robert
If Disney Ran Your Hospital: 9 1/2 Things You Would Do Differently Fred Lee
Nudge: Improving decisions about health, wealth and happiness Richard Thaler, Cass Sunstein

Four star rating with growing community support.

The Checklist Manifesto: How to Get Things Right Atul Gawande