MARY E BAKER CNM
NPI 1457346884
Midwife in Cambridge, MA

Active since September 12, 2005PECOS Enrolled
330 MOUNT AUBURN ST, CAMBRIDGE, MA 02138(617) 499-5151(617) 499-5179 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mary E Baker Cnm NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY E BAKER CNM (NPI 1457346884) is an individual midwife in Cambridge, Massachusetts, licensed in Massachusetts (200739) and active in the NPI registry since September 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1457346884
Entity TypeIndividualFemale
Primary Taxonomy176B00000X
Provider Legal NameMARY E BAKERCredential: CNM
Location Address330 MOUNT AUBURN STCambridge, MA 02138-5502
Mailing Address1 Arsenal Market PlWatertown, MA 02472-5018 · (617) 673-1851 · Fax (617) 499-5579
Fax(617) 499-5179
Sole ProprietorNo
Enumeration DateSeptember 12, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1457346884 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMidwifeOther Service Providers
Taxonomy Code176B00000X
License✔ Licensed in MA · 200739
Definition
A Midwife is a trained professional with special expertise in supporting women to maintain a healthy pregnancy birth, offering expert individualized care, education, counseling, and support to a woman and her newborn throughout the childbearing cycle. A Midwife is a skilled and independent practitioner who has undergone formalized training. Midwives are not required to be nurses and may be trained via multiple routes of education (apprenticeship, workshop, formal classes, or programs, etc., usually a combination). The educational background requirements and licensing requirements vary by state. The Midwife may or may not be certified by a state or national organization.
330 MOUNT AUBURN ST, Cambridge, MA 02138

Other Identifiers 1

Medicaid0388840MA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary E Baker Cnm is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mary Baker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Family Medicine
2014 WASHINGTON STREET
Newton, MA 02462
  • Reassigned Medicare billing, Massachusetts enrollment
  • 992 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physician Assistant (Surgical)
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Student in an Organized Health Care Education/Training Program
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Obstetrics & Gynecology
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Pediatrics (Pediatric Cardiology)
330 MOUNT AUBURN ST, NEWBORN SERVICES
CAMBRIDGE, MA 02138
Internal Medicine
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Emergency Medicine
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Anesthesiology
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Student in an Organized Health Care Education/Training Program
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Baker's NPI number?

The NPI number for Mary Baker is 1457346884. It was assigned to this individual provider in the NPPES registry on September 12, 2005.

Where is Mary Baker located?

Mary Baker practices at 330 Mount Auburn St, Cambridge, MA 02138. The listed phone number is (617) 499-5151.

What is Mary Baker's specialty?

The primary specialty registered for this NPI is Midwife with taxonomy code 176B00000X.

Is Mary Baker enrolled in Medicare?

Yes. Mary Baker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Baker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Baker reassigns Medicare benefits to Mass General Brigham Medical Group Suburban Massachusetts Inc (Newton, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Baker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Baker was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.