Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Gwynn Stup, A.P.R,N.

Clinical Nurse Specialist in Dover, DE · enumerated 2006.

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

National Provider Identifier

1942242664

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Registry record

Entity type Individual (Type 1)

Name Gwynn Stup

Credential A.P.R,N.

Sex Female

Practice address Dover, DE, 19904

Phone (302) 222-8304

Fax (302) 736-1280

Enumeration date Jun 11, 2006

Last updated in NPPES Mar 5, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

364SP0808X Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License LE-0000166 (DE) Secondary

364S00000X Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License LE-0000166 (DE) Primary

Other identifiers

Identifier	Type	State	Issuer
1000036563	Medicaid	DE	-

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 Gwynn Stup's NPI record?

Cross-check NPI 1942242664 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1942242664 active?

Yes, as of the latest NPPES snapshot, NPI 1942242664 is active (record last updated 2017-03-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-05.