Martha Duffy, M.D.
NPI 1821417379 · Family Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Martha Duffy, M.D. is a Family Medicine Physician provider in Boston, MA (NPI 1821417379).
Provider details
- NPI number
- 1821417379
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 273726 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-04-14
- Last updated
- 2023-06-08
- Certified
- 2023-06-08
Frequently asked questions
- What is Martha Duffy's NPI number?
- Martha Duffy's National Provider Identifier (NPI) is 1821417379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martha Duffy's specialty?
- Martha Duffy is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Martha Duffy located?
- Martha Duffy's practice location on file with NPPES is 150 S Huntington Ave, Boston, MA 02130-4817.
- What is Martha Duffy's phone number?
- The practice phone number listed in the NPPES registry for Martha Duffy is (617) 971-7955.
- Does Martha Duffy accept Medicare?
- Martha Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Martha Duffy's NPI active?
- Yes — Martha Duffy's NPI (1821417379) is active in the NPPES registry as of the last update on 2023-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.