Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Mailey, MS

Counselor in Mechanicsburg, PA · enumerated 2025.

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

National Provider Identifier

1427848043

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Registry record

Entity type Individual (Type 1)

Name Margaret Mailey

Credential MS

Sex Female

Practice address 1001 S Market St Ste B, Mechanicsburg, PA, 17055

Phone (717) 406-5190

Fax (717) 202-2590

Enumeration date May 7, 2025

Last updated in NPPES Feb 10, 2026

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License APC002066 (PA) 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 1427848043 active?

Yes, as of the latest NPPES snapshot, NPI 1427848043 is active (record last updated 2026-02-10).

How do I verify Margaret Mailey's NPI record?

Cross-check NPI 1427848043 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Chelsea Ranney Clinical Social Worker · Mechanicsburg, PA NPI 1033769658 Kirstie Ward Social Worker · Mechanicsburg, PA NPI 1366011975 Erin Harris Counselor · Mechanicsburg, PA NPI 1497503429 Jordan Kent Social Worker · Mechanicsburg, PA NPI 1609615327 Tabitha Curtis Clinical Social Worker · Mechanicsburg, PA NPI 1154162154 Courtney Finkey Social Worker · Mechanicsburg, PA NPI 1245076546

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-10.