Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gwendolyn Orfan, CRNP

Nurse Practitioner in Hagerstown, MD · enumerated 2015 · practices at Medical Practices of Antietam LLC.

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

National Provider Identifier

1538538871

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Gwendolyn Orfan

Credential CRNP

Sex Female

Practice address 11110 Medical Campus Rd Ste 108, Hagerstown, MD, 21742

Phone (301) 714-4041

Enumeration date Sep 16, 2015

Last updated in NPPES Oct 18, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License SP021386 (PA) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R150412 (MD) Primary

Other identifiers

Identifier	Type	State	Issuer
103746416	Medicaid	PA	-

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 1538538871 active?

Yes, as of the latest NPPES snapshot, NPI 1538538871 is active (record last updated 2021-10-18).

How do I verify Gwendolyn Orfan's NPI record?

Cross-check NPI 1538538871 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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-18.