NPPES file of Aug 9, 2026

Nikolas W. Rivera, PA

Physician Assistant · Boston, MA

Nikolas W. Rivera, PA is a physician assistant with a practice address in Boston, Massachusetts, and NPI 1861136186, issued on Apr 22, 2022. Check the license (Massachusetts PA9304, 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
1861136186
Name
Nikolas W. Rivera
Credential
PA
Primary taxonomy
Physician Assistant 363A00000X
License number
PA9304 MA
Self-reported in NPPES; status is on the state search
Practice location
450 Brookline Ave, Boston, MA 02215
Phone
(617) 632-3352
Enumerated
Apr 22, 2022
Record last updated
Jan 31, 2026
Medicare enrollment
Enrolled (PECOS I20230602001387); 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 physician assistant records → All 4,713 in Massachusetts → Look up another NPI →

Also registered at 450 Brookline Ave

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

  1. Gregory Abel, MDHematology & Oncology Physician1285611954
  2. Lara Abousamra, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1851183404
  3. Karley Adams, PAPhysician Assistant1578261764
  4. Lauren Adams, PA-CPhysician Assistant1902763469
  5. Ana Aguilar-Bonilla, M.D.Pediatric Hematology & Oncology Physician1023319761
  6. Andrew Aguirre, MD, PHDMedical Oncology Physician1609071208

Verify Nikolas W. Rivera 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 PA9304    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. Dana-Farber Cancer Institute, Inc.Boston, MA

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

Nikolas W. Rivera among 4,713 physician assistant records in Massachusetts

Nikolas W. Rivera, PA is one of 4,713 physician assistant records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 68% of them.

  • NPI issued2022 · 68% of these records are older, 25% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2022 · median 2019 among the 3,217 with a school on file
  • Record last updated2026 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,660 physician assistant records list a practice address in Boston

They are 1,660 of the 41,865 NPPES records with a practice address in Boston, and 4,713 physician assistant records in Massachusetts.

All 4,713 in Massachusetts → Every provider in Boston → Physician Assistant nationwide →

The 8 physician assistant records with the nearest ZIP codes

  1. Elizabeth Alqueza, PA-CBoston, MA 022151972584100
  2. Margaret Buonanno, PABoston, MA 022151851354989
  3. Amy Clyde, PABoston, MA 022151326001488
  4. Hajar Delshad, PA-CBoston, MA 022151801868914
  5. Nicole Dettmann, PABoston, MA 022151619931813
  6. Jerald Feuer, PABoston, MA 022151457332801
  7. Nancy Herriott, PABoston, MA 022151467418012
  8. Derek Hersey, PABoston, MA 022151114981289

Common questions

What is Nikolas W. Rivera, PA's NPI number?

Nikolas W. Rivera, PA's National Provider Identifier (NPI) is 1861136186, issued on Apr 22, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Nikolas W. Rivera, PA located?

The NPPES record lists a practice address at 450 Brookline Ave, Boston, MA, 02215. Phone: (617) 632-3352. Providers update this record themselves, so call before visiting.

How can I verify Nikolas W. Rivera, PA's license?

NPPES lists Massachusetts license number PA9304, 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.