Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stacy Sheffield Mach, MS

Q: What is the NPI number for Stacy Mach?

The National Provider Identifier (NPI) for Stacy Mach is 1952570459, a Type 1 (individual) record in the CMS NPPES registry.

Speech-Language Pathologist in Lincoln, MA · enumerated 2008.

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

National Provider Identifier

1952570459

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Registry record

Entity type Individual (Type 1)

Name Stacy Sheffield Mach

Credential MS

Sex Female

Practice address 15 Winter St, Lincoln, MA, 01773

Phone (978) 287-7976

Enumeration date Feb 28, 2008

Last updated in NPPES Feb 28, 2008

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 3588 (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

Where does Stacy Mach practice?

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

What is the NPI number for Stacy Mach?

The National Provider Identifier (NPI) for Stacy Mach is 1952570459, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-28.