Healthcare governing boards, executives, medical staff, health professionals, and allied staff members should all play a role in devising, promoting, and implementing solutions for climate change mitigation, which must extend beyond the boundaries of their own workplaces and healthcare institutions. Such actions can potentially influence not only healthcare professionals and their patients but also healthcare supply chains and entire communities. Thus, leaders of healthcare organizations can play a vital role in leading by example. The authors herein propose some initiatives for promoting and implementing a culture of sustainability and climate action in medicine.