It is easy to find a list of 24-hour medical clinics; one way is by using the Center Search feature on the Urgent Care Association of America website. The search tool can provide a list of medical walk-in clinics that are accredited members of the association, and some of which offer medical services on a 24-hour basis.
Urgent care centers are medical walk-in clinic that operate on extended hours or are open 24 hours. Their advantages include easy access to medical care when needed at a lower cost with shorter waiting periods. The search feature on the Urgent Care Association also has options to narrow down the search to a particular state or city.