Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Gary Greenwald, MD

Individual provider Emergency Medicine Physician · NPI 1942287024

Gary Greenwald, MD is an Emergency Medicine Physician in New Hyde Park, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2800 Marcus Ave
New Hyde Park, NY 11042-1113 Not confirmed with CMS for 11 years — call before visiting
Phone: (516) 622-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 154918-1 (NY)

Record details

NPI number1942287024
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 29, 2005
Last updated in NPPESFebruary 19, 2015

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients231
Services billed 274 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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