Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Abigail Stuart Demarzo, LMHC

Mental Health Counselor in Wellesley, MA · enumerated 2013.

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

National Provider Identifier

1396088969

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Registry record

Entity type Individual (Type 1)

Name Abigail Stuart Demarzo

Credential LMHC

Sex Female

Practice address Wellesley, MA, 02482

Phone (617) 699-4693

Enumeration date Apr 2, 2013

Last updated in NPPES Apr 2, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 8270 (MA) 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

Where does Abigail Demarzo practice?

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

What is the NPI number for Abigail Demarzo?

The National Provider Identifier (NPI) for Abigail Demarzo is 1396088969, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Richard Wilson Clinical Psychologist · Wellesley, MA NPI 1225126691

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-02.