Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tammy Dean Cayou, CPNP

Pediatric Nurse Practitioner in Leesburg, VA · enumerated 2006.

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

National Provider Identifier

1124127253

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Registry record

Entity type Individual (Type 1)

Name Tammy Dean Cayou

Credential CPNP

Sex Female

Practice address 19450 Deerfield Avenue, Suite 200, Leesburg, VA, 20176

Phone (703) 723-7337

Fax (703) 723-6848

Enumeration date Sep 22, 2006

Last updated in NPPES Sep 27, 2023

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APN.0003810-NP (CO) Primary

Other identifiers

Identifier	Type	State	Issuer
010320372	Medicaid	VA	-
010321221	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

Is NPI 1124127253 active?

Yes, as of the latest NPPES snapshot, NPI 1124127253 is active (record last updated 2023-09-27).

How do I verify Tammy Cayou's NPI record?

Cross-check NPI 1124127253 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Seth Toback Pediatric Adolescent Medicine Physician · Leesburg, VA NPI 1740289131 Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Managed Care Organization Pharmacy · Lansdowne, VA NPI 1700951746 Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Clinical Medical Laboratory · Landsdowne, VA NPI 1104984616 Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Health Maintenance Organization · Lansdowne, VA NPI 1861552721 Banti Chand Internal Medicine Physician · Lansdowne, VA NPI 1073670006 Hena Ahsan Family Nurse Practitioner · Leesburg, VA NPI 1548742133

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-27.