The celebrity known for their philanthropic efforts in healthcare is Oprah Winfrey. Through the Oprah Winfrey Foundation and the Oprah Winfrey Operating Foundation, she has funded numerous initiatives aimed at improving healthcare access and quality for underserved populations. Winfrey's contributions include support for healthcare facilities, education, and wellness programs. Her advocacy for mental health awareness and initiatives targeting chronic illnesses exemplifies her commitment to enhancing community well-being and promoting health equity around the world.