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754 Montauk Highway
Islip, New York 11751
(631) 581-4950
info@stmarksislip.org
Office Hours: 8:00 a.m. – 1:00 p.m.

5:00 p.m. Saturday Mass
9:15 a.m. Sunday Mass
9:15 a.m. Thursday Low Mass with Prayers for Healing

Mon: 10:00 a.m. – 2:00 p.m.
Wed: 10:00 a.m. – 2:00 p.m.
Sat: 10:00 a.m. – 2:00 p.m.