Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Robert Michael Allar, MD

Q: What is the NPI number for Robert Allar?

The National Provider Identifier (NPI) for Robert Allar is 1154395663, a Type 1 (individual) record in the CMS NPPES registry.

Retina Specialist (Ophthalmology) Physician in Naperville, IL · enumerated 2006.

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

National Provider Identifier

1154395663

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Registry record

Entity type Individual (Type 1)

Name Robert Michael Allar

Credential MD

Sex Male

Practice address Naperville, IL, 60563

Phone (630) 717-1311

Enumeration date Feb 14, 2006

Last updated in NPPES Aug 30, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036066795 (IL) Secondary

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 036066795 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Where does Robert Allar practice?

The practice location on file with NPPES is in Naperville, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Robert Allar?

The National Provider Identifier (NPI) for Robert Allar is 1154395663, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-30.