What is John Brennan's NPI number?

John Brennan's National Provider Identifier (NPI) is 1366555021, 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 Optometrist (Eye and Vision Services Providers).

Where is John Brennan located?

John Brennan's practice location on file with NPPES is 710 S Parrott Ave, Okeechobee, FL 34974-5138.

What is John Brennan's phone number?

The practice phone number listed in the NPPES registry for John Brennan is (863) 467-0595.

Does John Brennan accept Medicare?

John Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is John Brennan's NPI active?

Yes — John Brennan's NPI (1366555021) is active in the NPPES registry as of the last update on 2018-12-18.

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John Brennan, O.D.

NPI 1366555021 · Optometrist · Okeechobee, FL

John Brennan, O.D. is a Optometrist provider in Okeechobee, FL (NPI 1366555021).

Provider details

NPI number: 1366555021
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Male
Sole proprietor: Yes
License: FLOPC 000971 (FL)

Practice location

710 S Parrott Ave

Okeechobee, FL 34974-5138

Phone: (863) 467-0595

Fax: (863) 467-1686

Street-level locationGet directions

More FL providers

Mailing address

710 S Parrott Ave

Okeechobee, FL 34974-5138

Specialties & taxonomies

OptometristPrimary152W00000XLicense FLOPC 000971 (FL)
Eye and Vision Services Providers

Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
20 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.

Enumerated: 2006-08-16
Last updated: 2018-12-18

Frequently asked questions

What is John Brennan's NPI number?: John Brennan's National Provider Identifier (NPI) is 1366555021, 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 Optometrist (Eye and Vision Services Providers).
Where is John Brennan located?: John Brennan's practice location on file with NPPES is 710 S Parrott Ave, Okeechobee, FL 34974-5138.
What is John Brennan's phone number?: The practice phone number listed in the NPPES registry for John Brennan is (863) 467-0595.
Does John Brennan accept Medicare?: John Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is John Brennan's NPI active?: Yes — John Brennan's NPI (1366555021) is active in the NPPES registry as of the last update on 2018-12-18.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions