Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Anastasia Elizabeth Grebeck, PA-C

Physician Assistant in Fairfax, VA · enumerated 2018.

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

National Provider Identifier

1972081164

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Registry record

Entity type Individual (Type 1)

Name Mrs. Anastasia Elizabeth Grebeck

Credential PA-C

Sex Female

Practice address 3028 Javier Rd Ste 300, Fairfax, VA, 22031

Phone (703) 698-8960

Enumeration date Jul 31, 2018

Last updated in NPPES Mar 8, 2021

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 0110006276 (VA) 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 Anastasia Grebeck?

Anastasia Grebeck is registered in NPPES with the primary taxonomy of Physician Assistant. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-08.