What is John Duffy's NPI number?

John Duffy's National Provider Identifier (NPI) is 1184769713, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Duffy's specialty?

John Duffy is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is John Duffy located?

John Duffy's practice location on file with NPPES is 1211 W. Lancaster Ave., Rosemont, PA 19010.

What is John Duffy's phone number?

The practice phone number listed in the NPPES registry for John Duffy is (610) 525-2580.

Is John Duffy's NPI active?

Yes — John Duffy's NPI (1184769713) is active in the NPPES registry as of the last update on 2007-09-11.

IndividualActive

John Duffy, O.D.

NPI 1184769713 · Optometrist · Rosemont, PA

John Duffy, O.D. is a Optometrist provider in Rosemont, PA (NPI 1184769713).

Provider details

NPI number: 1184769713
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Male
Sole proprietor: Yes
License: OEG001604 (PA)

Specialties & taxonomies

OptometristPrimary152W00000XLicense OEG001604 (PA)
Eye and Vision Services Providers

Profile Score

Detailed profile(89/100 index)

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

Registry tenure38% of score
19 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

1211 W. Lancaster Ave.

Rosemont, PA 19010

Phone: (610) 525-2580

Fax: (610) 525-2705

Street-level locationGet directions

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Mailing address