Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Barry Barringer, OD

Optometrist in Ardmore, OK · enumerated 2005 · practices at John B. Barringer Od PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1528056140

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Registry record

Entity type Individual (Type 1)

Name Dr. John Barry Barringer

Credential OD

Sex Male

Practice address 715 12th Ave Nw, Ardmore, OK, 73401

Phone (580) 226-3523

Fax (580) 226-3880

Enumeration date Oct 7, 2005

Last updated in NPPES Nov 15, 2013

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 940 (OK) Primary

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
1528056140	Other	OK	MEDICARE PART B (TRAILBLAZER)
580000435	Other	OK	RAILROAD
100766020A	Medicaid	OK	-
731183973	Other	OK	MEDICARETRAILBLAZER

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.

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Frequently asked questions

What specialty is John Barringer?

John Barringer is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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John B. Barringer Od PC Optometrist · Ardmore, OK NPI 1699943704

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-15.