Medical school: UNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated: 1981
NPI: 1982680740
Practice Locations (2)
NANTUCKET COTTAGE HOSPITAL
57 PROSPECT ST
NANTUCKET, MA 025542799
5088258100
DONALD S. MARKS, M.D., P.C.
45 RESNIK RD, SUITE 205
PLYMOUTH, MA 023607223
5087465060
Source: CMS National Downloadable File, September 2026.