What is John Duff's NPI number?

John Duff's National Provider Identifier (NPI) is 1861902553, 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 Athletic Trainer (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).

Where is John Duff located?

John Duff's practice location on file with NPPES is 2001 Blake St, Denver, CO 80205-2060.

What is John Duff's phone number?

The practice phone number listed in the NPPES registry for John Duff is (303) 921-9502.

Is John Duff's NPI active?

Yes — John Duff's NPI (1861902553) is active in the NPPES registry as of the last update on 2017-10-06.

IndividualActive

John Duff, MA, ATC

NPI 1861902553 · Athletic Trainer · Denver, CO

John Duff, MA, ATC is a Athletic Trainer provider in Denver, CO (NPI 1861902553).

Provider details

NPI number: 1861902553
Entity type: Individual
Primary specialty: Athletic TrainerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Credential: MA, ATC
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Athletic TrainerPrimary2255A2300X
Respiratory, Developmental, Rehabilitative and Restorative Service Providers

Profile Score

Established profile(63/100 index)

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

Registry tenure38% of score
8 yrs in NPPES registry
Profile completeness38% of score
83% 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

2001 Blake St

Denver, CO 80205-2060

Phone: (303) 921-9502

Street-level locationGet directions

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Mailing address