NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Boston Maternal-Fetal Medicine, LLC

Maternal & Fetal Medicine Physician in Brookline, MA · enumerated 2013 · authorized official Benjamin Hamar, Cfo.

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

National Provider Identifier

1891034492

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Boston Maternal-Fetal Medicine, LLC
Parent organization Boston Mfm
Practice address 1 Brookline Pl, Suite 301, Brookline, MA, 02445
Phone (617) 264-0364
Fax (617) 264-0365
Enumeration date Feb 4, 2013
Last updated in NPPES Feb 4, 2013

Taxonomy & classification

207VM0101X Maternal & Fetal Medicine Physician Allopathic & Osteopathic Physicians Primary
261QM2500X Medical Specialty Clinic/Center Ambulatory Health Care Facilities Secondary

Authorized official

Name Benjamin Hamar
Title Cfo
Phone (617) 823-4191

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 is the NPI number for Boston Maternal-Fetal Medicine, LLC?
The NPI for Boston Maternal-Fetal Medicine, LLC is 1891034492, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Boston Maternal-Fetal Medicine, LLC?
NPPES lists Benjamin Hamar (Cfo) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-04.