Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Sandra Lynn Pietrzak, RDH

Denturist in Downers Grove, IL · enumerated 2006.

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

National Provider Identifier

1922176593

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Registry record

Entity type Individual (Type 1)

Name Mrs. Sandra Lynn Pietrzak

Credential RDH

Sex Female

Practice address 6800 Main St, Downers Grove, IL, 60516

Phone (630) 969-5350

Fax (630) 969-4692

Enumeration date Dec 1, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

122400000X Denturist Dental Providers Primary

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 Sandra Pietrzak?

Sandra Pietrzak is registered in NPPES with the primary taxonomy of Denturist. 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 2007-07-08.