Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Marc N. Sperber, DDS & Joseph Portnoy, DDS, LLC

Organization General Practice Dentistry · NPI 1861567166

Marc N. Sperber, DDS & Joseph Portnoy, DDS, LLC is a General Practice Dentistry in Lindenhurst, New York. Registered with an NPI since 2006.

In the registry since
2006
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

266 E Sunrise Hwy
Lindenhurst, NY 11757-2516
Phone: (631) 226-5252
Fax: (631) 226-5293
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X

Record details

NPI number1861567166
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Marc Sperber — Owner · (631) 226-5252
NPI enumeratedNovember 21, 2006
Last updated in NPPESJune 19, 2008
Mailing address266 East Sunrise Highway, Lindenhurst, NY 11757-2516

Other providers in Lindenhurst