Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Grey, PHD, PNP

Pediatric Nurse Practitioner in New Haven, CT · enumerated 2006.

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

National Provider Identifier

1245258862

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Registry record

Entity type Individual (Type 1)

Name Margaret Grey

Credential PHD, PNP

Sex Female

Practice address 20 York Street, Yale-New Haven Hospital, New Haven, CT, 06510

Phone (203) 737-1792

Enumeration date Jul 18, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

163WP0200X Pediatric Registered Nurse Nursing Service Providers · License R24358 (CT) Secondary

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 000807 (CT) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

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Frequently asked questions

How do I verify Margaret Grey's NPI record?

Cross-check NPI 1245258862 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1245258862 active?

Yes, as of the latest NPPES snapshot, NPI 1245258862 is active (record last updated 2025-09-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.