NPI Portal NPI Lookup & Verification

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

Margaret Ellen Nolan

Mental Health Counselor in Boston, MA · enumerated 2025 · practices at Boston Public Health Commission.

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

National Provider Identifier

1790658243

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Registry record

Entity type Individual (Type 1)
Name Margaret Ellen Nolan
Sex Female
Practice address Boston, MA, 02127
Phone (617) 534-9500
Enumeration date Sep 29, 2025
Last updated in NPPES Sep 29, 2025

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 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 Margaret Nolan practice?
The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Margaret Nolan?
The National Provider Identifier (NPI) for Margaret Nolan is 1790658243, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-29.