Margaret Duddy, APRN
NPI 1528342193 · Family Nurse Practitioner · Waltham, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Duddy, APRN is a Family Nurse Practitioner provider in Waltham, MA (NPI 1528342193).
Provider details
- NPI number
- 1528342193
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- RN2264173 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2011-09-30
- Last updated
- 2015-10-12
Frequently asked questions
- What is Margaret Duddy's NPI number?
- Margaret Duddy's National Provider Identifier (NPI) is 1528342193, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Duddy's specialty?
- Margaret Duddy is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Duddy located?
- Margaret Duddy's practice location on file with NPPES is 564 Main St, Waltham, MA 02452-5516.
- What is Margaret Duddy's phone number?
- The practice phone number listed in the NPPES registry for Margaret Duddy is (781) 693-3800.
- Does Margaret Duddy accept Medicare?
- Margaret Duddy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Duddy's NPI active?
- Yes — Margaret Duddy's NPI (1528342193) is active in the NPPES registry as of the last update on 2015-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.