DR. WILLIAM GILES ALLEN MD
NPI 1700884772
Internal Medicine - Sleep Medicine in Wilmington, NC

Q: What is William Allen's NPI number?

The NPI number for William Allen is 1700884772. It was assigned to this individual provider in the NPPES registry on July 13, 2005.

Q: What is William Allen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

Q: When was this NPI record last updated?

The NPPES record for William Allen was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 13, 2005

1090 MEDICAL CENTER DR, WILMINGTON, NC 28401(910) 343-3345(910) 343-1924 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. William Giles Allen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM GILES ALLEN MD (NPI 1700884772) is an individual sleep medicine provider in Wilmington, North Carolina, licensed in North Carolina (25107) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1700884772

Entity TypeIndividualMale

Primary Taxonomy207RS0012X

Provider Legal NameDR. WILLIAM GILES ALLENCredential: MD

Location Address1090 MEDICAL CENTER DRWilmington, NC 28401-7353

Mailing Address1090 Medical Center DrWilmington, NC 28401-7353 · (910) 343-3345 · Fax (910) 343-1924

Phone(910) 343-3345

Fax(910) 343-1924

Sole ProprietorNo

Enumeration DateJuly 13, 2005

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1700884772 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Sleep MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RS0012X

License✔ Licensed in NC · 25107

Definition

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 25107 (NC)

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 25107 (NC)

Other Identifiers 4

Other4828882NY · United Healthcare Provide

Other10886NC · Bcbs Of Nc Provider Numbe

Other88072NC · Medcost Provider Number

Medicaid8910886NC

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. SHANNON BONEY MATHIS NP-C

Nurse Practitioner