What is John Duff's NPI number?

John Duff's National Provider Identifier (NPI) is 1568904589, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Duff's specialty?

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

Where is John Duff located?

John Duff's practice location on file with NPPES is 3630 Hill Blvd., Jefferson Valley, NY 10535.

What is John Duff's phone number?

The practice phone number listed in the NPPES registry for John Duff is (914) 643-3810.

Is John Duff's NPI active?

Yes — John Duff's NPI (1568904589) is active in the NPPES registry as of the last update on 2016-11-08.

IndividualActive

John Duff, LMSW

NPI 1568904589 · Social Worker · Jefferson Valley, NY

John Duff, LMSW is a Social Worker provider in Jefferson Valley, NY (NPI 1568904589).

Provider details

NPI number: 1568904589
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: LMSW
Sex: Male
Sole proprietor: No
License: 051084-1 (NY)

Specialties & taxonomies

Social WorkerPrimary104100000XLicense 051084-1 (NY)
Behavioral Health & Social Service Providers

Profile Score

Established profile(71/100 index)

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

Registry tenure38% of score
9 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

3630 Hill Blvd.

Jefferson Valley, NY 10535

Phone: (914) 643-3810

Street-level locationGet directions

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Mailing address