What is Niles Cook's NPI number?

Niles Cook's National Provider Identifier (NPI) is 1376824466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Niles Cook's specialty?

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

Where is Niles Cook located?

Niles Cook's practice location on file with NPPES is 8245 Boone Blvd Ste 630, Vienna, VA 22182-3894.

What is Niles Cook's phone number?

The practice phone number listed in the NPPES registry for Niles Cook is (703) 261-9148.

Is Niles Cook's NPI active?

Yes — Niles Cook's NPI (1376824466) is active in the NPPES registry as of the last update on 2026-05-14.

IndividualActive

Niles Cook, PSY.D.

NPI 1376824466 · Psychologist · Vienna, VA

Niles Cook, PSY.D. is a Psychologist provider in Vienna, VA (NPI 1376824466).

Provider details

NPI number: 1376824466
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PSY.D.
Sex: Male
Sole proprietor: Yes
License: 0810008468 (VA)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 0810008468 (VA)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(81/100 index)

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

Registry tenure38% of score
14 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

8245 Boone Blvd Ste 630

Vienna, VA 22182-3894

Phone: (703) 261-9148

Street-level locationGet directions

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Mailing address