NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maggie Leung

Registered Nurse in Boston, MA · enumerated 2022 · practices at Leah Nelson, Licsw LLC.

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

National Provider Identifier

1346959335

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Registry record

Entity type Individual (Type 1)
Name Maggie Leung
Sex Female
Practice address 300 Fenway, Boston, MA, 02115
Phone (617) 724-5910
Enumeration date Nov 17, 2022
Last updated in NPPES Nov 17, 2022

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN2304300 (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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Maggie Leung?
Maggie Leung is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-17.