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

Declan Hennessy

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1316246853

Declan Hennessy is an Addiction (Substance Use Disorder) Counselor in New York, New York. Registered with an NPI since 2011.

In the registry since
2011

Practice location Address checks out

19 Union Sq W 7th Fl
New York, NY 10003-3304
Phone: (212) 627-9600
Fax: (212) 627-4040
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1316246853
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 23, 2011
Last updated in NPPESMarch 23, 2011

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