NPPES file of Aug 9, 2026

Marissa Ellen Pepicelli

Registered Nurse · Boston, MA

Marissa Ellen Pepicelli is a registered nurse with a practice address in Boston, Massachusetts, and NPI 1699648998, issued on Sep 24, 2025. Check the license (Massachusetts RN2343225, 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
1699648998
Name
Marissa Ellen Pepicelli
Primary taxonomy
Registered Nurse 163W00000X
License number
RN2343225 MA
Self-reported in NPPES; status is on the state search
Practice location
133 Brookline Ave, Boston, MA 02215
Phone
(617) 421-1000
Enumerated
Sep 24, 2025
Record last updated
Oct 24, 2025
Medicare enrollment
Enrolled (PECOS I20251112000304); 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.
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8 nearest registered nurse records → All 4,985 in Massachusetts → Look up another NPI →

Also registered at 133 Brookline Ave

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

  1. Shari Abramowitz, M.D.Pediatrics Physician1558346593
  2. Maansi AgheraAudiologist1225887292
  3. Nathalie Alexis, PSY.D.Clinical Psychologist1245886993
  4. Marina Alfisher, MDDiagnostic Radiology Physician1417925207
  5. Andrew Allmendinger, DODiagnostic Radiology Physician1972820942
  6. Dana An, LCSWClinical Social Worker1215108238

Verify Marissa Ellen Pepicelli 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 RN2343225    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.

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Bills Medicare through one group practice

  1. Atrius Health IncNeedham, MA

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

Marissa Ellen Pepicelli among 4,985 registered nurse records in Massachusetts

Marissa Ellen Pepicelli is one of 4,985 registered nurse records with a practice address in Massachusetts. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 81% of them.

  • NPI issued2025 · 81% of these records are older, 9% newer
  • In a Medicare fileYes · 3% of these records are
  • In the CMS Doctors and Clinicians fileYes · 2% of these records are
  • Graduated2025 · median 2022 among the 110 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163W00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

684 registered nurse records list a practice address in Boston

They are 684 of the 41,865 NPPES records with a practice address in Boston, and 4,985 registered nurse records in Massachusetts.

All 4,985 in Massachusetts → Every provider in Boston → Registered Nurse nationwide →

The 8 registered nurse records with the nearest ZIP codes

  1. Patricia Blazewicz, NPBoston, MA 022151659480853
  2. Monica Flanagan, NPBoston, MA 022151568571776
  3. Nancy Gantz, NPBoston, MA 022151851482335
  4. Diane Gilworth, NPBoston, MA 022151013026236
  5. Arlene Kelley, NPBoston, MA 022151225147275
  6. Cecily Kulsick, NPBoston, MA 022151063964997
  7. Martha Livesay, RNBoston, MA 022151457760266
  8. Alison Massed, NP-CBoston, MA 022151033773908

Common questions

What is Marissa Ellen Pepicelli's NPI number?

Marissa Ellen Pepicelli's National Provider Identifier (NPI) is 1699648998, issued on Sep 24, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Marissa Ellen Pepicelli located?

The NPPES record lists a practice address at 133 Brookline Ave, Boston, MA, 02215. Phone: (617) 421-1000. Providers update this record themselves, so call before visiting.

How can I verify Marissa Ellen Pepicelli's license?

NPPES lists Massachusetts license number RN2343225, 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.