What is Johnathan Duff's NPI number?

Johnathan Duff's National Provider Identifier (NPI) is 1548734460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Johnathan Duff's specialty?

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

Where is Johnathan Duff located?

Johnathan Duff's practice location on file with NPPES is 5691 Columbia Pike Ste 200, Falls Church, VA 22041-2888.

What is Johnathan Duff's phone number?

The practice phone number listed in the NPPES registry for Johnathan Duff is (703) 998-5606.

Is Johnathan Duff's NPI active?

Yes — Johnathan Duff's NPI (1548734460) is active in the NPPES registry as of the last update on 2019-06-11.

IndividualActive

Johnathan Duff, PHD

NPI 1548734460 · Psychologist · Falls Church, VA

Johnathan Duff, PHD is a Psychologist provider in Falls Church, VA (NPI 1548734460).

Provider details

NPI number: 1548734460
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PHD
Sex: Male
Sole proprietor: Yes
License: 0810005803 (VA)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 0810005803 (VA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(67/100 index)

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

Registry tenure38% of score
7 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

5691 Columbia Pike Ste 200

Falls Church, VA 22041-2888

Phone: (703) 998-5606

Street-level locationGet directions

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Mailing address