Dennis M Henderson Psychological Services PC
NPI 1518158088 · Psychologist · East Northport, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis M Henderson Psychological Services PC is a Psychologist organization in East Northport, NY (NPI 1518158088).
Provider details
- NPI number
- 1518158088
- Entity type
- Organization
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Parent organization
- Dennis M Henderson Psychological Services PC
- Organization subpart
- Yes
- Authorized official
- Dennis Henderson, President/Ceo(631) 368-8502
- License
- 0117921 (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
18 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
- 2007-08-08
- Last updated
- 2007-08-08
Frequently asked questions
- What is Dennis M Henderson Psychological Services PC's NPI number?
- Dennis M Henderson Psychological Services PC's National Provider Identifier (NPI) is 1518158088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dennis M Henderson Psychological Services PC?
- Dennis M Henderson Psychological Services PC is classified in the NPPES registry as Psychologist (Behavioral Health & Social Service Providers).
- Where is Dennis M Henderson Psychological Services PC located?
- Dennis M Henderson Psychological Services PC's practice location on file with NPPES is 12 Gildare Dr, East Northport, NY 11731-3223.
- What is Dennis M Henderson Psychological Services PC's phone number?
- The practice phone number listed in the NPPES registry for Dennis M Henderson Psychological Services PC is (631) 368-8502.
- Does Dennis M Henderson Psychological Services PC accept Medicare?
- Dennis M Henderson Psychological Services PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Dennis M Henderson Psychological Services PC?
- The authorized official listed on Dennis M Henderson Psychological Services PC's NPPES record is Dennis Henderson, President/Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dennis M Henderson Psychological Services PC's NPI active?
- Yes — Dennis M Henderson Psychological Services PC's NPI (1518158088) is active in the NPPES registry as of the last update on 2007-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.