All lab locations except the Cooley Dickinson Hospital location will be closed on Thursday, 11/25 and Friday, 11/26. The Cooley Dickinson Hospital lab location will be closed on Thanksgiving Day (11/25) and open on Friday, 11/26. Amherst - 170 University Drive Phone: 413-253-7546 Fax: 413-256-3790 Hours: Monday-Friday: 7 AM - 5:15 PM.