Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Drenzek Chiropractic, LLC

Q: What is the NPI number for Drenzek Chiropractic, LLC?

The NPI for Drenzek Chiropractic, LLC is 1265781819, a Type 2 (organization) record in the CMS NPPES registry.

Chiropractor in South Milwaukee, WI · enumerated 2012 · authorized official Kristin Grenier-Drenzek, Owner/Doctor of Chiropractic.

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

National Provider Identifier

1265781819

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Registry record

Entity type Organization (Type 2)

Legal business name Drenzek Chiropractic, LLC

Practice address 2211 10th Avenue, Suite B, South Milwaukee, WI, 53172

Phone (414) 766-9390

Fax (414) 766-9392

Enumeration date Aug 29, 2012

Last updated in NPPES Aug 29, 2012

Taxonomy & classification

111N00000X Chiropractor Chiropractic Providers · License 4092-012 (WI) Primary

Authorized official

Name Kristin Grenier-Drenzek

Title Owner/Doctor of Chiropractic

Phone (414) 241-2183

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

Who is the authorized official for Drenzek Chiropractic, LLC?

NPPES lists Kristin Grenier-Drenzek (Owner/Doctor of Chiropractic) as the authorized official for this organization.

What is the NPI number for Drenzek Chiropractic, LLC?

The NPI for Drenzek Chiropractic, LLC is 1265781819, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-29.