NPPES file of Aug 9, 2026

Stewart A. Mackie, M.D.

Pediatric Cardiology Physician · Springfield, MA

Stewart A. Mackie, M.D. is a pediatric cardiology physician with a practice address in Springfield, Massachusetts, and NPI 1558563551, issued on Jun 1, 2007. Check the license (Massachusetts 254559, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; 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
1558563551
Name
Stewart A. Mackie
Credential
M.D.
Primary taxonomy
Pediatric Cardiology Physician 2080P0202X
License numbers
254559 MA
4301096262 MI
LP01101 RI
Self-reported in NPPES; status is on the state search
Practice location
50 Wason Ave, Springfield, MA 01107
Phone
(413) 794-5437
Enumerated
Jun 1, 2007
Record last updated
Nov 15, 2022
Fax
(413) 794-7408
Medicare enrollment
Enrolled (PECOS I20220825001127); 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 50 Wason Ave

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

  1. Holley Allen, MDPediatric Endocrinology Physician1225129471
  2. Maria Andrade, DOPediatrics Physician1558939363
  3. Anastasios Angelides, MDPediatric Gastroenterology Physician1265413009
  4. Jaime Barber, RNRegistered Nurse First Assistant1972440006
  5. Charlotte Boney, MDPediatric Endocrinology Physician1811940737
  6. Jillian Bongiorni, NPFamily Nurse Practitioner1558903484

Verify Stewart A. Mackie in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 254559    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
Open 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. Connecticut Children's Specialty Group, IncHartford, CT

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

Pediatric Cardiology Physician providers in Massachusetts

There are 129 pediatric cardiology physician records in Massachusetts.

All 129 in Massachusetts → Every provider in Springfield →

Other pediatric cardiology physician records in Massachusetts

  1. Sylvia Abadir, MDBoston, MA1427366459
  2. Safwat Aly, MDBoston, MA1194160069
  3. Lucy Arnold, MDBoston, MA1689682379
  4. Joseph Atallah, M.D.Boston, MA1710149190
  5. Duraisamy Balaguru, MDBoston, MA1154382703
  6. Gunjan Banga, M.DSpringfield, MA1184912727
  7. Virginie Beausejour Ladouceur, M. D.Boston, MA1154679413
  8. Oscar Benavidez, MDBoston, MA1386622603
  9. Lisa Bergersen, MD MPHBoston, MA1942299730
  10. Rebecca Beroukhim, M.D.Boston, MA1578687109

Common questions

What is Stewart A. Mackie, M.D.'s NPI number?

Stewart A. Mackie, M.D.'s National Provider Identifier (NPI) is 1558563551, issued on Jun 1, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Stewart A. Mackie, M.D. located?

The NPPES record lists a practice address at 50 Wason Ave, Springfield, MA, 01107. Phone: (413) 794-5437. Providers update this record themselves, so call before visiting.

How can I verify Stewart A. Mackie, M.D.'s license?

NPPES lists Massachusetts license number 254559, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.