NPPES file of Aug 9, 2026

Walid Zairi, CRNA

Certified Registered Nurse Anesthetist · Concord, MA

Walid Zairi, CRNA is a certified registered nurse anesthetist with a practice address in Concord, Massachusetts, and NPI 1558808428, issued on Jan 30, 2017. Check the license (Massachusetts RN2308491, 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
1558808428
Name
Walid Zairi
Credential
CRNA
Primary taxonomy
Certified Registered Nurse Anesthetist 367500000X
License number
RN2308491 MA
Self-reported in NPPES; status is on the state search
Practice location
133 Old Road TO 9 Acre Cor, Concord, MA 01742
Phone
(978) 369-1400
Enumerated
Jan 30, 2017
Record last updated
Sep 15, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170327001925); 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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Also registered at 133 Old Road TO 9 Acre Cor

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

  1. Marie Aguirre, PA-CPhysician Assistant1467281691
  2. Michelle Allanbrook, RNRegistered Nurse1053833905
  3. David Barash, M.D.Emergency Medicine Physician1699756296
  4. Joseph Bergen, D.O.Emergency Medicine Physician1518921972
  5. Seamus Bergen, RNPsychiatric/Mental Health Registered Nurse1528638467
  6. Tanya Bergen, LICSWMental Health Counselor1861742140

Verify Walid Zairi 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 RN2308491
    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. Emerson Practice Associates II, IncConcord, MA

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

Walid Zairi among 1,342 certified registered nurse anesthetist records in Massachusetts

Walid Zairi, CRNA is one of 1,342 certified registered nurse anesthetist records with a practice address in Massachusetts. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 67% of them.

  • NPI issued2017 · 67% of these records are older, 28% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated2016 · median 2013 among the 1,006 with a school on file
  • Record last updated2021 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

14 certified registered nurse anesthetist records list a practice address in Concord

They are 14 of the 1,078 NPPES records with a practice address in Concord, and 1,342 certified registered nurse anesthetist records in Massachusetts.

The 8 certified registered nurse anesthetist records with the nearest ZIP codes

  1. Margaret Burke, CRNAConcord, MA 017421336203009
  2. Alexia Caprio, CRNAConcord, MA 017421063728343
  3. Michelle Drown, CRNAConcord, MA 017421710268230
  4. Jill DuchesneConcord, MA 017421801274782
  5. Marcia Gnagey, CRNAConcord, MA 017421952384836
  6. Rachael Greenleaf, CRNAConcord, MA 017421558847525
  7. Lisa Hogan, CRNAConcord, MA 017421477573632
  8. Matthew Mackos, CRNAConcord, MA 017421912838327

Common questions

What is Walid Zairi, CRNA's NPI number?

Walid Zairi, CRNA's National Provider Identifier (NPI) is 1558808428, issued on Jan 30, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Walid Zairi, CRNA located?

The NPPES record lists a practice address at 133 Old Road TO 9 Acre Cor, Concord, MA, 01742. Phone: (978) 369-1400. Providers update this record themselves, so call before visiting.

How can I verify Walid Zairi, CRNA's license?

NPPES lists Massachusetts license number RN2308491, 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.

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.