Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Margaret S. Chapman, P.C.

Clinical Social Worker in Cohasset, MA · enumerated 2024 · authorized official Margaret Chapman, President.

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

National Provider Identifier

1477323269

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Registry record

Entity type Organization (Type 2)

Legal business name Margaret S. Chapman, P.C.

Practice address 100 Pond St Apt 18, Cohasset, MA, 02025

Phone (781) 254-3292

Fax (781) 218-9324

Enumeration date Jan 3, 2024

Last updated in NPPES Jan 3, 2024

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

364SP0807X Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Margaret Chapman

Title President

Phone (781) 254-3292

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2024-01-03. Verify at npiregistry.cms.hhs.gov.

Where is Margaret S. Chapman, P.C. located?

The practice location on file with NPPES is in Cohasset, MA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-03.