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

Español Near me My list Help
US Patient GuideUSA
Surprise me
Emergency Medicine

Peter W. Greenwald, MD

Sees patients in New York, NY · New York

Summary

Peter W. Greenwald, MD (Emergency Medicine) is enrolled with Medicare at 1 practice location in New York, NY. NPI 1255481164. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(646) 962‑7300 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Peter W. Greenwald, 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

1Practice location
Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
29Years since medical school (graduated 1997)
State University Of New York Downstate Medical CenterMedical school
MaleGender (as listed)
Weill Medical College of CornellGroup practice

Quick answers

Where does Peter W. Greenwald see patients?
Medicare's clinician data lists 1 practice location in New York, NY. Call before your visit to confirm the address.
What is Peter W. Greenwald's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Peter W. Greenwald accept Medicare assignment?
Yes. Medicare's clinician data says Peter W. Greenwald 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.
Does Peter W. Greenwald offer telehealth?
Medicare's clinician data says Peter W. Greenwald offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Peter W. Greenwald?
(646) 962-7300, as listed in official Medicare / NPI Registry data.
What is Peter W. Greenwald's NPI number?
1255481164. 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 Peter W. Greenwald is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Peter W. Greenwald as a member of this group (CMS data updated 2026-10-02).

  • Weill Medical College of Cornell2,051 clinicians in the group

Specialties

Find other Emergency Medicine doctors in New York →

Other emergency medicine doctors in New York

Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.

All emergency medicine doctors in New York →

Clinician information

CredentialMD
Medical schoolState University Of New York Downstate Medical Center
Graduation year1997
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1255481164
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 2026-10-02, retrieved 2026-10-29
  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