Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Gayle Armstrong, NP

Family Nurse Practitioner in Great Barrington, MA · enumerated 2007.

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

National Provider Identifier

1235279597

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Registry record

Entity type Individual (Type 1)

Name Ms. Gayle Armstrong

Credential NP

Sex Female

Practice address 29 Lewis Ave, Great Barrington, MA, 01230

Phone (413) 854-9638

Fax (413) 854-9639

Enumeration date Feb 7, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 158203 (MA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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 Gayle Armstrong practice?

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

What is the NPI number for Gayle Armstrong?

The National Provider Identifier (NPI) for Gayle Armstrong is 1235279597, a Type 1 (individual) record in the CMS NPPES registry.

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Kerstin Voss Hospitalist Physician · Great Barrington, MA NPI 1013998244 Renu Agarwal Critical Care Medicine (Internal Medicine) Physician · Great Barrington, MA NPI 1639121593 Fairview Hospital Critical Access Hospital · Great Barrington, MA NPI 1730112251 Kenneth Patterson Emergency Medicine Physician · Great Barrington, MA NPI 1427150374 Bruce Nayowith Emergency Medicine Physician · Great Barrington, MA NPI 1558461087 Sharyn Hickey Nurse Practitioner · Gt Barrington, MA NPI 1851489264 William Demarco Internal Medicine Physician · Great Barrington, MA NPI 1124103577 Fairview Hospital Medicare Defined Swing Bed Hospital Unit · Great Barrington, MA NPI 1174689467

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.