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Cardiac Surgery

Maureen McKiernan, MD

Sees patients in Newark, NJ · New York, NY · New Jersey, New York

Summary

Dr. Maureen McKiernan, MD is a cardiac surgeon at 201 Lyons Ave, Newark, NJ 07112. Phone: (973) 467-9282. Accepts Medicare assignment. NPI 1255864369. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Cardiac surgeon (Medicare lists Cardiac Surgery)
  • Address: 201 Lyons Ave, Newark, NJ 07112 · Directions (1 more location)
  • Phone: (973) 467‑9282
  • Medicare: Accepts Medicare assignment
  • Group practice: Trustees of Columbia University in the City of New York (+1 more)
  • Medical school: University Of Kansas School Of Med (kc/wich/sal) · graduated 2017 (9 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Maureen McKiernan, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Maureen McKiernan accept Medicare assignment?
Yes. Medicare's clinician data says Maureen McKiernan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Maureen McKiernan's NPI number?
1255864369. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Maureen McKiernan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Maureen McKiernan as a member of these groups (CMS data updated October 2, 2026).

  • Trustees of Columbia University in the City of New York2,296 clinicians in the group
  • Barnabas Health Medical Group PC1,070 clinicians in the group

Specialties

Find other Cardiac Surgery doctors in New Jersey →

Other cardiac surgeons in Newark

Clinicians with the same Medicare primary specialty in Newark, NJ — not a recommendation.

All cardiac surgeons in Newark →

Other clinicians in Trustees of Columbia University in the City of New York

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Kansas School Of Med (kc/wich/sal)
Graduation year2017 (9 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1255864369
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians