Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary E Baker, CNM

Midwife in Cambridge, MA · enumerated 2005.

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

National Provider Identifier

1457346884

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Registry record

Entity type Individual (Type 1)

Name Mary E Baker

Credential CNM

Sex Female

Practice address 330 Mount Auburn St, Cambridge, MA, 02138

Phone (617) 499-5151

Fax (617) 499-5179

Enumeration date Sep 12, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

176B00000X Midwife Other Service Providers · License 200739 (MA) Primary

CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care. About the CNM credential

Other identifiers

Identifier	Type	State	Issuer
0388840	Medicaid	MA	-

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 Mary Baker?

Mary Baker is registered in NPPES with the primary taxonomy of Midwife. 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.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.