NPPES file of Aug 9, 2026

Mary C. Cassidy, N.P.

Adult Health Nurse Practitioner · Brookline, MA

Mary C. Cassidy, N.P. is an adult health nurse practitioner with a practice address in Brookline, Massachusetts, and NPI 1568438729, issued on Feb 27, 2006. Check the license (Massachusetts 129190, 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
1568438729
Name
Mary C. Cassidy
Credential
N.P.
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
129190 MA
Self-reported in NPPES; status is on the state search
Practice location
11 Kent St, Brookline, MA 02445
Phone
(617) 447-2147
Enumerated
Feb 27, 2006
Record last updated
Jul 13, 2026
Fax
(617) 264-9763
Medicaid ID
0347001 MA
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 adult health nurse practitioner records → All 1,465 in Massachusetts → Look up another NPI →

Verify Mary C. Cassidy 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 129190    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

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Mary C. Cassidy among 1,465 adult health nurse practitioner records in Massachusetts

Mary C. Cassidy, N.P. is one of 1,465 adult health nurse practitioner records with a practice address in Massachusetts. 61% 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 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 73% newer
  • In a Medicare fileNo · 61% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2026 · 73% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Health Nurse Practitioner providers in Massachusetts

There are 1,465 adult health nurse practitioner records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,465 in Massachusetts → Every provider in Brookline → Adult Health Nurse Practitioner nationwide →

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Nina Diggs, NPBrookline, MA 024451124355649
  2. Linda Dumas, PHD NPCBrookline, MA 024451609980374
  3. Moka Yoo-JeongBrookline, MA 024461134707888
  4. Kerry Assarian, NPWaltham, MA 024511457499923
  5. Karin Broden, NPWaltham, MA 024511134141427
  6. Margaret Carey, ANPWaltham, MA 024511881746972
  7. Kerry Kilroy, APRN-BCWaltham, MA 024511548327638
  8. Hadassah Kneppel, NPWaltham, MA 024511639285976

Common questions

What is Mary C. Cassidy, N.P.'s NPI number?

Mary C. Cassidy, N.P.'s National Provider Identifier (NPI) is 1568438729, issued on Feb 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mary C. Cassidy, N.P. located?

The NPPES record lists a practice address at 11 Kent St, Brookline, MA, 02445. Phone: (617) 447-2147. Providers update this record themselves, so call before visiting.

How can I verify Mary C. Cassidy, N.P.'s license?

NPPES lists Massachusetts license number 129190, 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.