Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Erin Duffy, M.D.

Family Medicine Physician in Willow Grove, PA · enumerated 2005.

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

National Provider Identifier

1487647061

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Registry record

Entity type Individual (Type 1)

Name Dr. Erin Duffy

Credential M.D.

Sex Female

Practice address Naval Health Clinic - Willow Grove, Nas/Jrb Willow Grove, Willow Grove, PA, 19090

Phone (215) 443-6360

Enumeration date Aug 29, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 0101-236239 (VA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1487647061 active?

Yes, as of the latest NPPES snapshot, NPI 1487647061 is active (record last updated 2007-07-08).

How do I verify Erin Duffy's NPI record?

Cross-check NPI 1487647061 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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Michael Petryna Pharmacist · Jrb Willow Grove, PA NPI 1558439430

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