Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Conrad Walter Mazeski, DDS

General Practice Dentistry in Johnsburg, IL · enumerated 2007 · practices at Johnsburg Dental Center.

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

National Provider Identifier

1801079090

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Registry record

Entity type Individual (Type 1)

Name Dr. Conrad Walter Mazeski

Credential DDS

Sex Male

Practice address 4113 Johnsburg Road, Johnsburg, IL, 60050

Phone (815) 344-0028

Fax (815) 344-2466

Enumeration date Dec 11, 2007

Last updated in NPPES Dec 11, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Conrad Mazeski?

The National Provider Identifier (NPI) for Conrad Mazeski is 1801079090, a Type 1 (individual) record in the CMS NPPES registry.

Where does Conrad Mazeski practice?

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

Other providers at this practice address

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Johnsburg Dental Center General Practice Dentistry · Johnsburg, IL NPI 1184823569

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-11.