Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Barry P Siegel, O.D.
Optometrist in Chicago, IL · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639177694
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Registry record
Entity type Individual (Type 1)
Name Dr. Barry P Siegel
Credential O.D.
Sex Male
Practice address 1926 W Irving Park Rd, Chicago, IL, 60613
Phone (773) 525-0952
Fax (773) 525-0966
Enumeration date Jul 13, 2005
Last updated in NPPES Jan 6, 2014
Taxonomy & licenses
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 |
|---|---|---|---|
| 00105852285 | Other | - | AETNA |
| 046-006370 | Medicaid | IL | - |
| 206874 | Other | - | MEDICARE GROUP ID |
| 363727344 | Other | - | TAX ID |
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.
Frequently asked questions
How do I verify Barry Siegel's NPI record?
Cross-check NPI 1639177694 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1639177694 active?
Yes, as of the latest NPPES snapshot, NPI 1639177694 is active (record last updated 2014-01-06).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-06.