Danny van Leeuwen, Opa, MPH, RN, a two-legged cis-gender, old white man of privilege, wears many hats in healthcare. He’s known as Health Hats – an action catalyst, patient-caregiver activist, a person with disabilities from Multiple Sclerosis, care partner to several family members’ end-of-life journeys, a registered nurse for over 45 years, informaticist, and podcaster (https://www.health-hats.com/pod). Danny serves widely as a technical expert. For example, he is a National Quality Forum Patient and Caregiver Engagement advisor and serves as a member of their Standing Committee for Cost and Efficiency Measures. Danny is a member of the PCORI (Patient-Centered Outcomes Research Institute) Board of Governors. He previously served as the Vice President for Quality Management at Advocates, Inc., providing support services to individuals and families with mental illness and developmental disabilities, among other challenges, and led Boston Children's Hospital's Patient-Family Experience Initiative. He plays baritone saxophone in a Latin Band.