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

Dr. William L. O'Neill, DDS

Individual provider General Practice Dentistry · NPI 1497952550

Dr. William L. O'Neill, DDS is a General Practice Dentistry in Englewood Cliffs, New Jersey. Practices as a sole proprietor. Licensed in New Jersey.

Licensed in
NJ
In the registry since
2007
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

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Practice location Address checks out

617 E Palisade Ave
Englewood Cliffs, NJ 07632-1831
Phone: (201) 871-9292
Fax: (201) 871-9298
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence DI 009011 (NJ)

Record details

NPI number1497952550
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedJune 29, 2007
Last updated in NPPESJuly 8, 2007
Mailing address617 E Palisade Ave, Englewood Cliffs, NJ 07632-1831

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