What is Justine Duncan's NPI number?

Justine Duncan's National Provider Identifier (NPI) is 1689531931, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Justine Duncan's specialty?

Justine Duncan is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).

Where is Justine Duncan located?

Justine Duncan's practice location on file with NPPES is 60 S Ocean Ave, Bayport, NY 11705-2214.

What is Justine Duncan's phone number?

The practice phone number listed in the NPPES registry for Justine Duncan is (516) 448-8554.

Is Justine Duncan's NPI active?

Yes — Justine Duncan's NPI (1689531931) is active in the NPPES registry as of the last update on 2026-01-08.

IndividualActive

Justine Duncan

NPI 1689531931 · Psychologist · Bayport, NY

Justine Duncan is a Psychologist provider in Bayport, NY (NPI 1689531931).

Provider details

NPI number: 1689531931
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: Yes
License: 022739 (NY)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 022739 (NY)
Behavioral Health & Social Service Providers

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

60 S Ocean Ave

Bayport, NY 11705-2214

Phone: (516) 448-8554

Fax: (516) 448-8554

Street-level locationGet directions

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Mailing address