Mark A. DeNigris, DDS

Following a Tradition of Dental Excellence Since 1954

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We encourage you to contact us whenever you have an interest or concern about any of the dental procedures or services that we offer. You may contact us by calling our office or filling out the form below.

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Office Location
34 South Oyster Bay Road
Syosset, NY 11791
New Patients: (516) 342-5027
Existing Patients: (516) 921-3290

Office Hours





Monday: 9:00am - 1:00pm
2:00pm - 6:00pm
Tuesday: 9:00am - 1:00pm
2:00pm - 6:00pm
Wednesday: Closed
Thursday: 9:00am - 1:00pm
2:00pm - 6:00pm
Friday: Closed
Saturday: 9:00am - 1:00pm

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