What is John Brennan's NPI number?

John Brennan's National Provider Identifier (NPI) is 1346477395, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Brennan's specialty?

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

Where is John Brennan located?

John Brennan's practice location on file with NPPES is 300 S Main St, Wallingford, CT 06492-4603.

What is John Brennan's phone number?

The practice phone number listed in the NPPES registry for John Brennan is (203) 626-5247.

Is John Brennan's NPI active?

Yes — John Brennan's NPI (1346477395) is active in the NPPES registry as of the last update on 2009-06-17.

IndividualActive

John Brennan, LO

NPI 1346477395 · Optician · Wallingford, CT

John Brennan, LO is a Optician provider in Wallingford, CT (NPI 1346477395).

Provider details

NPI number: 1346477395
Entity type: Individual
Primary specialty: OpticianEye and Vision Services Providers
Credential: LO
Sex: Male
Sole proprietor: Yes
License: 001495 (CT)

Specialties & taxonomies

OpticianPrimary156FX1800XLicense 001495 (CT)
Eye and Vision Services Providers

Profile Score

Detailed profile(85/100 index)

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

Registry tenure38% of score
17 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

300 S Main St

Wallingford, CT 06492-4603

Phone: (203) 626-5247

Street-level locationGet directions

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Mailing address