Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Walker

Doula in Jamaica Plain, MA · enumerated 2024.

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

National Provider Identifier

1770302044

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Registry record

Entity type Individual (Type 1)

Name Margaret Walker

Sex Female

Practice address 114 Chestnut Ave Apt 4, Jamaica Plain, MA, 02130

Phone (612) 916-2054

Enumeration date Oct 4, 2024

Last updated in NPPES Oct 4, 2024

Taxonomy & licenses

374J00000X Doula Nursing Service Related 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Margaret Walker?

Margaret Walker is registered in NPPES with the primary taxonomy of Doula. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-04.