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

Mrs. Stephanie Kay Mattrey

Acupuncturist in Amherst, MA · enumerated 2009.

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

National Provider Identifier

1548593684

Verified

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Registry record

Entity type Individual (Type 1)

Name Mrs. Stephanie Kay Mattrey

Sex Female

Practice address Amherst, MA, 01002

Phone (413) 336-8300

Enumeration date Sep 8, 2009

Last updated in NPPES Nov 10, 2025

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License 254048 (MA) 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

What is the NPI number for Stephanie Mattrey?

The National Provider Identifier (NPI) for Stephanie Mattrey is 1548593684, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephanie Mattrey practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-10.