Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander Portnoy, DMD

Dentist in Wheeling, IL · enumerated 2022.

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

National Provider Identifier

1609500941

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander Portnoy

Credential DMD

Sex Male

Practice address 201 E Strong St, Wheeling, IL, 60090

Phone (847) 947-2651

Enumeration date Jul 12, 2022

Last updated in NPPES Jan 19, 2024

Taxonomy & licenses

122300000X Dentist Dental Providers · License 019.033828 (IL) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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.

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Frequently asked questions

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.

What specialty is Alexander Portnoy?

Alexander Portnoy is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-19.