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Internal Medicine

Thaddeus Nigborowicz, MD

Works at hospitals in Boston, MA · Burlington, MA · Beverly, MA · Massachusetts

Summary

Thaddeus Nigborowicz, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Boston, MA, Burlington, MA and Beverly, MA. NPI 1437257268. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Thaddeus Nigborowicz, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
29Years since medical school (graduated 1997)
Albany Medical College Of Union UniversityMedical school
MaleGender (as listed)
Lahey Clinic IncGroup practice

Quick answers

Which hospitals does Thaddeus Nigborowicz work at?
Medicare's official clinician data lists Thaddeus Nigborowicz at 3 hospitals: Beth Israel Deaconess Medical Center, Lahey Hospital & Medical Center, Burlington and Northeast Hospital Corporation. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Thaddeus Nigborowicz see patients?
Medicare's clinician data lists 2 practice locations, including Burlington, MA. Call before your visit to confirm the address.
What is Thaddeus Nigborowicz's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Thaddeus Nigborowicz accept Medicare assignment?
Yes. Medicare's clinician data says Thaddeus Nigborowicz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is Thaddeus Nigborowicz's NPI number?
1437257268. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Thaddeus Nigborowicz works

Medicare's Facility Affiliation Data lists Thaddeus Nigborowicz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Thaddeus Nigborowicz is enrolled with Medicare (CMS data updated 2026-10-02).

  • 29 Mall RdBurlington, MA 01805
  • 41 Mall RdBurlington, MA 01805

Group practices

Medicare enrollment lists Thaddeus Nigborowicz as a member of this group (CMS data updated 2026-10-02).

  • Lahey Clinic Inc1,381 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Burlington

Clinicians with the same Medicare primary specialty in Burlington, MA — not a recommendation.

All internal medicine doctors in Burlington →

Clinician information

CredentialMD
Medical schoolAlbany Medical College Of Union University
Graduation year1997
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1437257268
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians