Mark Henderson, LCSW
NPI 1083606826 · Clinical Social Worker · Poughkeepsie, NY
Mark Henderson, LCSW is a Clinical Social Worker provider in Poughkeepsie, NY (NPI 1083606826).
Provider details
- NPI number
- 1083606826
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- License
- PR026381-1 (NY)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2005-08-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Henderson's NPI number?
- Mark Henderson's National Provider Identifier (NPI) is 1083606826, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Henderson's specialty?
- Mark Henderson is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Henderson located?
- Mark Henderson's practice location on file with NPPES is 29 N Hamilton St, Poughkeepsie, NY 12601-2541.
- What is Mark Henderson's phone number?
- The practice phone number listed in the NPPES registry for Mark Henderson is (845) 452-1110.
- Is Mark Henderson's NPI active?
- Yes — Mark Henderson's NPI (1083606826) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.