Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Erin S Simon, AG-ACNP

Acute Care Nurse Practitioner in Fairfax, VA · enumerated 2006 · practices at The Cardiovascular Group, PC.

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

National Provider Identifier

1316958176

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Registry record

Entity type Individual (Type 1)

Name Mrs. Erin S Simon

Credential AG-ACNP

Sex Female

Practice address 3580 Joseph Siewick Dr Ste 305, Fairfax, VA, 22033

Phone (703) 648-3266

Fax (703) 648-3264

Enumeration date Aug 10, 2006

Last updated in NPPES Aug 27, 2021

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024173563 (VA) Primary

Other identifiers

Identifier	Type	State	Issuer
1316958176	Medicaid	VA	-

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 Erin Simon?

Erin Simon is registered in NPPES with the primary taxonomy of Acute Care 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-27.