Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Merriellyn J Maldonado, LCSW

Clinical Social Worker in Arlington, VA · enumerated 2009 · practices at Arlington County Government Department of Managment & Finance.

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

National Provider Identifier

1114156601

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Registry record

Entity type Individual (Type 1)

Name Merriellyn J Maldonado

Credential LCSW

Sex Female

Practice address 2120 Washington Blvd, Arlington, VA, 22204

Phone (703) 228-5002

Enumeration date Jul 7, 2009

Last updated in NPPES May 22, 2018

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 0904007983 (VA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
004945247	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 1114156601 active?

Yes, as of the latest NPPES snapshot, NPI 1114156601 is active (record last updated 2018-05-22).

How do I verify Merriellyn Maldonado's NPI record?

Cross-check NPI 1114156601 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-22.