MARTHA J. DUFFY M.D.
NPI 1821417379
Family Medicine in Boston, MA
About Martha J. Duffy M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARTHA J. DUFFY M.D. (NPI 1821417379) is an individual family medicine provider in Boston, Massachusetts, licensed in Massachusetts (273726) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Martha J. Duffy M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Martha Duffy reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
East Boston, MA 02128
- Reassigned Medicare billing, Massachusetts enrollment
- 577 clinicians in this Medicare group
East Boston, MA 02128
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: East Boston Neighborhood Health Center Corp
- 456 clinicians in this Medicare group
Worcester, MA 01605
- Reassigned Medicare billing, Massachusetts enrollment
- 24 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02130 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BOSTON, MA 02130
BOSTON, MA 02130
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 Martha Duffy's NPI number?
The NPI number for Martha Duffy is 1821417379. It was assigned to this individual provider in the NPPES registry on April 14, 2014.
Where is Martha Duffy located?
Martha Duffy practices at 150 S Huntington Ave, Boston, MA 02130. The listed phone number is (617) 971-7955.
What is Martha Duffy's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Martha Duffy enrolled in Medicare?
Yes. Martha Duffy is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Martha Duffy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martha Duffy reassigns Medicare benefits to 3 organizations: Internal Medical Associates-Ebnhc (East Boston, MA), Neighborhealth Corporation (East Boston, MA) and Lianne Inc (Worcester, MA). Each 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 Martha Duffy'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 Martha Duffy was last updated on June 8, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# Martha J. Duffy, M.D. · NPI 1821417379
Family Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 14, 2014.
## Identity
- **NPI:** 1821417379 (Entity type: Individual)
- **Enumerated:** April 14, 2014
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 273726 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 150 S HUNTINGTON AVE, Boston, MA 02130-4817
- **Phone:** (617) 971-7955
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Internal Medical Associates-Ebnhc (NPI 1558481879, East Boston, MA); Neighborhealth Corporation (NPI 1316994411, East Boston, MA); Lianne Inc (NPI 1457773541, Worcester, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 8, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1821417379) · Data from the CMS NPPES public registry.