Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Geraldine Marie Jack, BS, ETS

Specialist in Grand Rapids, MI · enumerated 2010.

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

National Provider Identifier

1649574021

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Registry record

Entity type Individual (Type 1)

Name Geraldine Marie Jack

Credential BS, ETS

Sex Female

Practice address 1490 E Beltline Ave Se, Grand Rapids, MI, 49506

Phone (616) 450-6482

Enumeration date Dec 29, 2010

Last updated in NPPES Aug 23, 2021

Taxonomy & licenses

174400000X Specialist Other Service Providers Secondary

174400000X Specialist Other Service Providers · License 000000 (MI) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Geraldine Jack practice?

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

What is the NPI number for Geraldine Jack?

The National Provider Identifier (NPI) for Geraldine Jack is 1649574021, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-23.