Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alison Gill, OD

Optometrist in River Forest, IL · enumerated 2022.

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

National Provider Identifier

1871228650

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Registry record

Entity type Individual (Type 1)

Name Dr. Alison Gill

Credential OD

Sex Female

Practice address 7427 Lake St, River Forest, IL, 60305

Phone (708) 771-3334

Enumeration date Jul 18, 2022

Last updated in NPPES May 5, 2025

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 046011664 (IL) 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 Gill?

Alison Gill 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-05.