NPPES file of Aug 9, 2026

Olivia Bass, NP

Family Nurse Practitioner · Watertown, MA

Olivia Bass, NP is a family nurse practitioner with a practice address in Watertown, Massachusetts, and NPI 1669209664, issued on Sep 16, 2024. Check the license (Massachusetts RN2286284, 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
1669209664
Name
Olivia Bass
Credential
NP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
RN2286284 MA
Self-reported in NPPES; status is on the state search
Practice location
485 Arsenal St, Watertown, MA 02472
Phone
(617) 972-5230
Enumerated
Sep 16, 2024
Record last updated
Sep 16, 2024
Medicare enrollment
Enrolled (PECOS I20241204002801); 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 family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →

Also registered at 485 Arsenal St

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

  1. Jennifer Allen, PHARMD, CDCES, BCACPAmbulatory Care Pharmacist1285890566
  2. Nicole Allie, PHARMD, CGPGeriatric Pharmacist1104933936
  3. Ehsan Azimi, M.D.Internal Medicine Physician1437475829
  4. Mark Bauer, M.D.Internal Medicine Physician1487625307
  5. Edward Bauman, PSYDPsychologist1174575674
  6. James Brown, PTPhysical Therapist1912966565

Verify Olivia Bass 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 RN2286284    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).

Olivia Bass among 4,724 family nurse practitioner records in Massachusetts

Olivia Bass, NP 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 2024, is newer than 86% of them.

  • NPI issued2024 · 86% of these records are older, 8% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2023 · median 2019 among the 2,704 with a school on file
  • Record last updated2024 · 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).

30 family nurse practitioner records list a practice address in Watertown

They are 30 of the 873 NPPES records with a practice address in Watertown, and 4,724 family nurse practitioner records in Massachusetts.

All 4,724 in Massachusetts → Every provider in Watertown → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Richard Arnold, FNP, BCWatertown, MA 024721659344646
  2. Neangkanika Chea, FNP-BCWatertown, MA 024721477007730
  3. Katherine De Kanter, NPWatertown, MA 024721114256674
  4. Carolyn Dobies, NPWatertown, MA 024721053384669
  5. Andrea Forde, NPWatertown, MA 024721760451025
  6. Lynne Henning, ARNPWatertown, MA 024721043319783
  7. Jancie Lawrence, NP-CWatertown, MA 024721760884407
  8. Marcine Logue, NPWatertown, MA 024721174581029

Common questions

What is Olivia Bass, NP's NPI number?

Olivia Bass, NP's National Provider Identifier (NPI) is 1669209664, issued on Sep 16, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Olivia Bass, NP located?

The NPPES record lists a practice address at 485 Arsenal St, Watertown, MA, 02472. Phone: (617) 972-5230. Providers update this record themselves, so call before visiting.

How can I verify Olivia Bass, NP's license?

NPPES lists Massachusetts license number RN2286284, 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.