The American Nurses Foundation has a COVID Response Fund where they are accepting donations. Link in "Support" Button below.
The HealthEquip App is connecting individuals with organizations that have PPE for hospitals in need in partnership with the American Hospital Association.
https://getusppe.org/ has been in the news for doing similar work and they accept donations as well.
The Girl Scouts are accepting donations to deliver cookies to healthcare workers at hospitals https://www.girlscouts.org/en/cookie-care.html