Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Emergency Medicine

Joseph Leanza, MD

Works at hospitals in Boston, MA · Massachusetts

Summary

Joseph Leanza, MD (Emergency Medicine) is listed by Medicare at 1 hospital in Boston, MA. NPI 1558892356. 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 Joseph Leanza, 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

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
9Years since medical school (graduated 2017)
Icahn School Of Medicine At Mount SinaiMedical school
MaleGender (as listed)
Boston Emergency Physician Foundation IncGroup practice

Quick answers

Which hospitals does Joseph Leanza work at?
Medicare's official clinician data lists Joseph Leanza at 1 hospital: Boston Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Joseph Leanza see patients?
Medicare's clinician data lists 1 practice location in Boston, MA. Call before your visit to confirm the address.
What is Joseph Leanza's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Joseph Leanza accept Medicare assignment?
Yes. Medicare's clinician data says Joseph Leanza 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 the phone number for Joseph Leanza?
(617) 414-5481, as listed in official Medicare / NPI Registry data.
What is Joseph Leanza's NPI number?
1558892356. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Joseph Leanza works

Medicare's Facility Affiliation Data lists Joseph Leanza 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 Joseph Leanza is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

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

  • Boston Emergency Physician Foundation Inc77 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Massachusetts →

Other emergency medicine doctors in Boston

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

All emergency medicine doctors in Boston →

Clinician information

CredentialMD
Medical schoolIcahn School Of Medicine At Mount Sinai
Graduation year2017
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1558892356
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