NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Demi Janel Oliver, PCPNP-BC

Nurse Practitioner in Windsor Mill, MD · enumerated 2009.

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

National Provider Identifier

1376786038

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Demi Janel Oliver
Credential PCPNP-BC
Sex Female
Practice address 6901 Security Blvd, Windsor Mill, MD, 21244
Phone (410) 837-2050
Enumeration date Apr 10, 2009
Last updated in NPPES Apr 2, 2024

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R221463 (MD) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R221463 (MD) Primary

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 specialty is Demi Oliver?
Demi Oliver is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-02.