Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann Lorry Nathalie Marcelin, LGPC

Mental Health Counselor in Gaithersburg, MD · enumerated 2021.

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

National Provider Identifier

1033707310

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Registry record

Entity type Individual (Type 1)

Name Ann Lorry Nathalie Marcelin

Credential LGPC

Sex Female

Practice address 620 E Diamond Ave Ste H, Gaithersburg, MD, 20877

Phone (240) 683-6580

Enumeration date Jan 4, 2021

Last updated in NPPES Jan 4, 2021

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LGP10140 (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.

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Frequently asked questions

How do I verify Ann Lorry Marcelin's NPI record?

Cross-check NPI 1033707310 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1033707310 active?

Yes, as of the latest NPPES snapshot, NPI 1033707310 is active (record last updated 2021-01-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-04.