NPPES file of Aug 9, 2026

Margaret W. Njigua

Psychiatric/Mental Health Registered Nurse · Lexington, MA

Margaret W. Njigua is a psychiatric/mental health registered nurse with a practice address in Lexington, Massachusetts, and NPI 1487471843, issued on Sep 25, 2024. Check the license (Massachusetts RN2314786, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1487471843
Name
Margaret W. Njigua
Primary taxonomy
Psychiatric/Mental Health Registered Nurse 163WP0808X
License number
RN2314786 MA
Self-reported in NPPES; status is on the state search
Practice location
125 Hartwell Ave, Lexington, MA 02421
Phone
(781) 861-0890
Enumerated
Sep 25, 2024
Record last updated
Sep 25, 2024
Medicare enrollment
Enrolled (PECOS I20260307000066); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest psychiatric/mental health registered nurse records → All 365 in Massachusetts → Look up another NPI →

Also registered at 125 Hartwell Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dominic AcostaMental Health Counselor1497581649
  2. Jonathan Acquaviva, M.ED, LMHCMental Health Counselor1902512767
  3. Nishtha AgarwalMental Health Counselor1760037576
  4. Johnna AggelikasMental Health Counselor1659216828
  5. Olusegun AinaMental Health Counselor1982461521
  6. Patrick Aker, LICSWMental Health Counselor1285401968

Verify Margaret W. Njigua in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license RN2314786    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Eliot Community Human ServicesConcord, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Margaret W. Njigua among 365 psychiatric/mental health registered nurse records in Massachusetts

Margaret W. Njigua is one of 365 psychiatric/mental health registered nurse records with a practice address in Massachusetts. 23% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 79% of them.

  • NPI issued2024 · 79% of these records are older, 13% newer
  • In a Medicare fileYes · 23% of these records are
  • In the CMS Doctors and Clinicians fileYes · 16% of these records are
  • Graduated2025 · median 2013 among the 60 with a school on file
  • Record last updated2024 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WP0808X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

12 psychiatric/mental health registered nurse records list a practice address in Lexington

They are 12 of the 1,467 NPPES records with a practice address in Lexington, and 365 psychiatric/mental health registered nurse records in Massachusetts.

All 365 in Massachusetts → Every provider in Lexington → Psychiatric/Mental Health Registered Nurse nationwide →

The 8 psychiatric/mental health registered nurse records with the nearest ZIP codes

  1. Carolyn ClaiborneLexington, MA 024211063784205
  2. Mary Darby, RNLexington, MA 024211417659913
  3. Hawa Diallo, RNLexington, MA 024211508568056
  4. Jennifer HowardLexington, MA 024211457776015
  5. Elizabeth Lopilato, R.N.Lexington, MA 024211417387317
  6. George Lukon, RNLexington, MA 024211225476757
  7. Alicia Madden, RNLexington, MA 024211982413241
  8. Moses NgigiLexington, MA 024211295156628

Common questions

What is Margaret W. Njigua's NPI number?

Margaret W. Njigua's National Provider Identifier (NPI) is 1487471843, issued on Sep 25, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Margaret W. Njigua located?

The NPPES record lists a practice address at 125 Hartwell Ave, Lexington, MA, 02421. Phone: (781) 861-0890. Providers update this record themselves, so call before visiting.

How can I verify Margaret W. Njigua's license?

NPPES lists Massachusetts license number RN2314786, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.