Dr. John Patrick Brennan Sr., O.D.
Dr. John Patrick Brennan Sr. is a Optometrist provider (Optometrist) practicing in Okeechobee, FL, registered in the NPPES registry with NPI 1366555021 since 2006. The credential OD stands for Doctor of Optometry.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1366555021 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John Patrick Brennan Sr. |
| Credential | O.D. |
| Sex | Male |
| Practice address | Okeechobee, FL, 34974 |
| Phone | 8634670595 |
| Fax | 8634671686 |
| Enumeration date | 2006-08-16 |
| Last updated in NPPES | 2018-12-18 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 152W00000X | Optometrist | Primary | FLOPC 000971 | FL |
OD — Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 19044 | Other | FL | BLUE CROSS BLUE SHIELD |
| 084047500 | Medicaid | FL | — |
Copy-ready billing details
Provider: John Brennan, O.D. NPI: 1366555021 Taxonomy: 152W00000X (Optometrist) Address: Okeechobee, FL, 34974
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1205011863 | John Patrick Brennan Od PA | Organization | Optometrist | Okeechobee, FL |
| 1598912545 | Christine Bishop | Individual | Optometrist | Okeechobee, FL |
| 1992297444 | Family Eye Care of Okeechobee PA | Organization | Optometrist | Okeechobee, FL |
Verify this record
Cross-check NPI 1366555021 against the authoritative CMS record: view Dr. John Patrick Brennan Sr. on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
Where does John Brennan practice?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2018-12-18.