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

Rebecca Spiewak, RN

Neonatal Intensive Care Registered Nurse in Oak Creek, WI · enumerated 2021.

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

National Provider Identifier

1639741861

Verified

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Registry record

Entity type Individual (Type 1)

Name Rebecca Spiewak

Credential RN

Sex Female

Practice address Oak Creek, WI, 53154

Phone (414) 839-7422

Enumeration date Jul 16, 2021

Last updated in NPPES Jul 16, 2021

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

Taxonomy & licenses

163WN0002X Neonatal Intensive Care Registered Nurse Nursing Service Providers · License 253928-30 (WI) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

Other identifiers

Identifier	Type	State	Issuer
253928-30	Other	WI	WI-DSPS

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 Rebecca Spiewak practice?

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

What is the NPI number for Rebecca Spiewak?

The National Provider Identifier (NPI) for Rebecca Spiewak is 1639741861, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-16.