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

Dr. Conor M Wierus, DDS

General Practice Dentistry in Oak Lawn, IL · enumerated 2021.

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

National Provider Identifier

1225627532

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Registry record

Entity type Individual (Type 1)

Name Dr. Conor M Wierus

Credential DDS

Sex Male

Practice address Oak Lawn, IL, 60453

Phone (708) 942-7287

Enumeration date Jan 12, 2021

Last updated in NPPES Aug 22, 2026

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 019.032978 (IL) Primary

122300000X Dentist Dental Providers · License DN25773 (FL) Secondary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

How do I verify Conor Wierus's NPI record?

Cross-check NPI 1225627532 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1225627532 active?

Yes, as of the latest NPPES snapshot, NPI 1225627532 is active (record last updated 2026-08-22).

Other providers at this practice address

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John Green General Practice Dentistry · Oak Lawn, IL NPI 1639747801

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-22.