Margaret Papanastassiou, N.P.
Family Nurse Practitioner · Leominster, MA
Margaret Papanastassiou, N.P. is a family nurse practitioner with a practice address in Leominster, Massachusetts, and NPI 1437361086, issued on May 4, 2007. Check the license (Massachusetts 149680, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Papanastassiou
- Credential
- N.P.
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 149680 MA
Self-reported in NPPES; status is on the state search - Practice location
- 79 Erdman Way Ste 101, Leominster, MA 01453
- Phone
- (978) 537-4805
- Enumerated
- May 4, 2007
- Record last updated
- May 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (987) 537-2185
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Verify Margaret Papanastassiou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 149680Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $20.66
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Margaret Papanastassiou among 4,724 family nurse practitioner records in Massachusetts
Margaret Papanastassiou, N.P. is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 9% of them.
- NPI issued2007 · 9% of these records are older, 86% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2020 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 family nurse practitioner records list a practice address in Leominster
They are 46 of the 1,151 NPPES records with a practice address in Leominster, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Leominster → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Linda Brisebois, NPLeominster, MA 014531467666107
- Danane Chhor, FNP-BCLeominster, MA 014531124469499
- Pamela Demar, FNP-BCLeominster, MA 014531124358916
- Jonathan Goguen, FNPLeominster, MA 014531932467453
- Samantha Good, R.N/N.PLeominster, MA 014531417386681
- Steven Gutwillig, ARNPLeominster, MA 014531003886540
- Lauren Katz, FNPLeominster, MA 014531619247855
- Anna Pozharny, F.N.PLeominster, MA 014531023441276
Common questions
What is Margaret Papanastassiou, N.P.'s NPI number?
Margaret Papanastassiou, N.P.'s National Provider Identifier (NPI) is 1437361086, issued on May 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Papanastassiou, N.P. located?
The NPPES record lists a practice address at 79 Erdman Way Ste 101, Leominster, MA, 01453. Phone: (978) 537-4805. Providers update this record themselves, so call before visiting.
How can I verify Margaret Papanastassiou, N.P.'s license?
NPPES lists Massachusetts license number 149680, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.