Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Heather Macewen, MCLSC. OT REG

Contractor in San Diego, CA · enumerated 2014.

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

National Provider Identifier

1417377979

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Registry record

Entity type Individual (Type 1)

Name Ms. Heather Macewen

Credential MCLSC. OT REG

Sex Female

Practice address 3685 Kearny Villa Rd, San Diego, CA, 92123

Phone (858) 966-5436

Enumeration date Apr 23, 2014

Last updated in NPPES Jan 16, 2015

Taxonomy & licenses

171W00000X Contractor Other Service Providers · License 14292 (CA) 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

Is NPI 1417377979 active?

Yes, as of the latest NPPES snapshot, NPI 1417377979 is active (record last updated 2015-01-16).

How do I verify Heather Macewen's NPI record?

Cross-check NPI 1417377979 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-16.