Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Holly Grant-Marsney, PH.D.

Mental Health Counselor in Marshfield, MA · enumerated 2016.

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

National Provider Identifier

1841746534

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Registry record

Entity type Individual (Type 1)

Name Dr. Holly Grant-Marsney

Credential PH.D.

Sex Female

Practice address 769 Plain St, Unit I, Marshfield, MA, 02050

Phone (617) 847-1950

Fax (617) 774-1490

Enumeration date Sep 1, 2016

Last updated in NPPES Sep 1, 2016

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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

What is the NPI number for Holly Grant-Marsney?

The National Provider Identifier (NPI) for Holly Grant-Marsney is 1841746534, a Type 1 (individual) record in the CMS NPPES registry.

Where does Holly Grant-Marsney practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-01.