Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Giles Allen, MD

Sleep Medicine (Internal Medicine) Physician in Wilmington, NC · enumerated 2005.

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

National Provider Identifier

1700884772

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Registry record

Entity type Individual (Type 1)

Name Dr. William Giles Allen

Credential MD

Sex Male

Practice address 1090 Medical Center Dr, Wilmington, NC, 28401

Phone (910) 343-3345

Fax (910) 343-1924

Enumeration date Jul 13, 2005

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 25107 (NC) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 25107 (NC) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 25107 (NC) Primary

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

Other identifiers

Identifier	Type	State	Issuer
4828882	Other	NY	UNITED HEALTHCARE PROVIDE
10886	Other	NC	BCBS OF NC PROVIDER NUMBE
88072	Other	NC	MEDCOST PROVIDER NUMBER
8910886	Medicaid	NC	-

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 William Allen's NPI record?

Cross-check NPI 1700884772 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1700884772 active?

Yes, as of the latest NPPES snapshot, NPI 1700884772 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.