Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alison Jean Byrne, O.D.

Optometrist in Merrillville, IN · enumerated 2007.

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

National Provider Identifier

1275650608

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Alison Jean Byrne

Credential O.D.

Sex Female

Practice address 303 W 89th Ave, Suite E4, Merrillville, IN, 46410

Phone (219) 769-8989

Fax (219) 865-2060

Enumeration date Mar 22, 2007

Last updated in NPPES Dec 21, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 18003176 (IN) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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 → Validate an NPI →

Frequently asked questions

What specialty is Alison Byrne?

Alison Byrne 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-21.