Declan Hennessy
NPI 1316246853 · Addiction (Substance Use Disorder) Counselor · New York, NY
Declan Hennessy is a Addiction (Substance Use Disorder) Counselor provider in New York, NY (NPI 1316246853).
Provider details
- NPI number
- 1316246853
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-03-23
- Last updated
- 2011-03-23
Frequently asked questions
- What is Declan Hennessy's NPI number?
- Declan Hennessy's National Provider Identifier (NPI) is 1316246853, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Declan Hennessy's specialty?
- Declan Hennessy is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Declan Hennessy located?
- Declan Hennessy's practice location on file with NPPES is 19 Union Sq W, New York, NY 10003-3304.
- What is Declan Hennessy's phone number?
- The practice phone number listed in the NPPES registry for Declan Hennessy is (212) 627-9600.
- Is Declan Hennessy's NPI active?
- Yes — Declan Hennessy's NPI (1316246853) is active in the NPPES registry as of the last update on 2011-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.