Margaret Papanastassiou, N.P.
NPI 1437361086 · Family Nurse Practitioner · Leominster, MA
Margaret Papanastassiou, N.P. is a Family Nurse Practitioner provider in Leominster, MA (NPI 1437361086).
Provider details
- NPI number
- 1437361086
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 149680 (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 tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-04
- Last updated
- 2020-05-12
- Certified
- 2020-05-12
Frequently asked questions
- What is Margaret Papanastassiou's NPI number?
- Margaret Papanastassiou's National Provider Identifier (NPI) is 1437361086, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Papanastassiou's specialty?
- Margaret Papanastassiou is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Papanastassiou located?
- Margaret Papanastassiou's practice location on file with NPPES is 79 Erdman Way Ste 101, Leominster, MA 01453-1805.
- What is Margaret Papanastassiou's phone number?
- The practice phone number listed in the NPPES registry for Margaret Papanastassiou is (978) 537-4805.
- Is Margaret Papanastassiou's NPI active?
- Yes — Margaret Papanastassiou's NPI (1437361086) is active in the NPPES registry as of the last update on 2020-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.