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Gregory Wong Demeo, D.O.

Obstetrics & Gynecology Physician in Newark, DE · enumerated 2006.

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

National Provider Identifier

1497712657

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Registry record

Entity type Individual (Type 1)
Name Gregory Wong Demeo
Credential D.O.
Sex Male
Practice address 4745 Ogletown Stanton Rd, Suite 106, Newark, DE, 19713
Phone (302) 454-9800
Fax (302) 454-6446
Enumeration date Apr 28, 2006
Last updated in NPPES Apr 2, 2021

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License C20003423 (DE) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
056634000 Other - AMERIHEALTH
4283187 Other - AETNA
F39722 Other DE BLUE CROSS BLUE SHIELD
304652 Other - COVENTRY

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

Where does Gregory Demeo practice?
The practice location on file with NPPES is in Newark, DE. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gregory Demeo?
The National Provider Identifier (NPI) for Gregory Demeo is 1497712657, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-02.