Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Esther A Merritt, M.A., LMHC

Mental Health Counselor in Littleton, MA · enumerated 2011.

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

National Provider Identifier

1992090393

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Registry record

Entity type Individual (Type 1)

Name Esther A Merritt

Credential M.A., LMHC

Sex Female

Practice address 119 Russell St, Littleton, MA, 01460

Phone (978) 679-1200

Enumeration date Jun 14, 2011

Last updated in NPPES Jul 22, 2013

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 8454 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
8454	Other	MA	LICENSED MENTAL HEALTH COUNSELOR

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

Where does Esther Merritt practice?

The practice location on file with NPPES is in Littleton, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Esther Merritt?

The National Provider Identifier (NPI) for Esther Merritt is 1992090393, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-22.