NPPES file of Aug 9, 2026

Cassandra McMaster, R.N.

Registered Nurse · Boston, MA

Cassandra McMaster, R.N. is a registered nurse with a practice address in Boston, Massachusetts, and NPI 1174067292, issued on Dec 8, 2016. Check the license (Massachusetts RN276145, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1174067292
Name
Cassandra McMaster
Credential
R.N.
Primary taxonomy
Registered Nurse 163W00000X
License number
RN276145 MA
Self-reported in NPPES; status is on the state search
Practice location
1800 Columbus Ave, Boston, MA 02119
Phone
(617) 442-8800
Enumerated
Dec 8, 2016
Record last updated
Dec 8, 2016 (not updated in 10 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). 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 1800 Columbus Ave

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

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  3. Ariel SquierDevelopmental Therapist1073399192

Verify Cassandra McMaster 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 RN276145    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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Cassandra McMaster among 4,985 registered nurse records in Massachusetts

Cassandra McMaster, R.N. 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 not. Its NPI, issued in 2016, is newer than 36% of them.

  • NPI issued2016 · 36% of these records are older, 61% newer
  • In a Medicare fileNo · 3% of these records are
  • In the CMS Doctors and Clinicians fileNo · 2% of these records are
  • Record last updated2016 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

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

The 8 registered nurse records with the nearest ZIP codes

  1. Sabrina AbanoorBoston, MA 021191215818745
  2. Sandra Hidalgo, RNRoxbury, MA 021191962833988
  3. Stephanie Lamartine, RNRoxbury, MA 021191891566188
  4. Rebecca McCauley, RN, BSNRoxbury, MA 021191912237835
  5. Grace NgetheBoston, MA 021191891663308
  6. Pauline Onyemelukwe, RNRoxbury, MA 021191376872572
  7. Madilyn Park, RNRoxbury, MA 021191598273278
  8. Gaile Registe, RNRoxbury, MA 021191447535430

Common questions

What is Cassandra McMaster, R.N.'s NPI number?

Cassandra McMaster, R.N.'s National Provider Identifier (NPI) is 1174067292, issued on Dec 8, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Cassandra McMaster, R.N. located?

The NPPES record lists a practice address at 1800 Columbus Ave, Boston, MA, 02119. Phone: (617) 442-8800. Providers update this record themselves, so call before visiting.

How can I verify Cassandra McMaster, R.N.'s license?

NPPES lists Massachusetts license number RN276145, 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. 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.