Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Mackenzie, APRN

Nurse Practitioner in Effingham, NH · enumerated 2021.

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

National Provider Identifier

1437721040

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Registry record

Entity type Individual (Type 1)

Name Sarah Mackenzie

Credential APRN

Sex Female

Practice address 244 High Watch Rd, Effingham, NH, 03882

Phone (866) 652-8889

Enumeration date Jul 13, 2021

Last updated in NPPES Aug 26, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 063064-23 (NH) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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

How do I verify Sarah Mackenzie's NPI record?

Cross-check NPI 1437721040 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1437721040 active?

Yes, as of the latest NPPES snapshot, NPI 1437721040 is active (record last updated 2021-08-26).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-26.