Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kristine Mary Stack, RN

Registered Nurse in Springfield, MA · enumerated 2012.

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

National Provider Identifier

1255675153

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Registry record

Entity type Individual (Type 1)

Name Kristine Mary Stack

Credential RN

Sex Female

Practice address 995 Worthington St, Springfield, MA, 01109

Phone (413) 734-5376

Fax (413) 737-7949

Enumeration date Nov 15, 2012

Last updated in NPPES Nov 15, 2012

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN198823 (MA) Primary

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

Where does Kristine Stack practice?

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

What is the NPI number for Kristine Stack?

The National Provider Identifier (NPI) for Kristine Stack is 1255675153, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-15.