Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Sylvester Obanya Okonkwo, MD

Internal Medicine Physician in Oxon Hill, MD · enumerated 2005.

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

National Provider Identifier

1801897582

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Registry record

Entity type Individual (Type 1)

Name Dr. Sylvester Obanya Okonkwo

Credential MD

Sex Male

Practice address 6192 Oxon Hill Rd, Ste 507, Oxon Hill, MD, 20745

Phone (301) 839-0800

Fax (301) 839-8088

Enumeration date Aug 3, 2005

Last updated in NPPES Dec 26, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D0055314 (MD) 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
113703400	Medicaid	MD	-

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

What is the NPI number for Sylvester Okonkwo?

The National Provider Identifier (NPI) for Sylvester Okonkwo is 1801897582, a Type 1 (individual) record in the CMS NPPES registry.

Where does Sylvester Okonkwo practice?

The practice location on file with NPPES is in Oxon Hill, MD. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-26.