Leland W. Petersen, Psychologist, P.C.
NPI 1083831408 · Clinical Psychologist · Glen Head, NY
Leland W. Petersen, Psychologist, P.C. is a Clinical Psychologist organization in Glen Head, NY (NPI 1083831408).
Provider details
- NPI number
- 1083831408
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Leland Petersen, President(516) 671-7509
- License
- 05430 (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
19 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
Other names (DBA / former)
- Other name
- L.w. Petersen, Psychologist, P.C.
Registry dates
- Enumerated
- 2007-04-19
- Last updated
- 2008-06-17
Frequently asked questions
- What is Leland W. Petersen, Psychologist, P.C.'s NPI number?
- Leland W. Petersen, Psychologist, P.C.'s National Provider Identifier (NPI) is 1083831408, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Leland W. Petersen, Psychologist, P.C.?
- Leland W. Petersen, Psychologist, P.C. is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Leland W. Petersen, Psychologist, P.C. located?
- Leland W. Petersen, Psychologist, P.C.'s practice location on file with NPPES is 11 Beechwood Dr, Glen Head, NY 11545-1101.
- What is Leland W. Petersen, Psychologist, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Leland W. Petersen, Psychologist, P.C. is (516) 671-7509.
- Who is the authorized official for Leland W. Petersen, Psychologist, P.C.?
- The authorized official listed on Leland W. Petersen, Psychologist, P.C.'s NPPES record is Leland Petersen, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Leland W. Petersen, Psychologist, P.C.'s NPI active?
- Yes — Leland W. Petersen, Psychologist, P.C.'s NPI (1083831408) is active in the NPPES registry as of the last update on 2008-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.