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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JOEL GREENSPAN M.D.
NPI 1417907205
Internal Medicine - Infectious Disease in Port Washington, NY

Active since May 11, 2006
44 S BAYLES AVE, SUITE 216, PORT WASHINGTON, NY 11050(516) 767-7771(516) 767-7765 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Joel Greenspan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOEL GREENSPAN M.D. (NPI 1417907205) is an individual infectious disease provider in Port Washington, New York, licensed in New York (107499) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1417907205
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. JOEL GREENSPANCredential: M.D.
Location Address44 S BAYLES AVE, SUITE 216Port Washington, NY 11050-3765
Mailing Address44 S Bayles Ave, Suite 216Port Washington, NY 11050-3765 · (516) 767-7771 · Fax (516) 767-7765
Phone(516) 767-7771
Fax(516) 767-7765
Sole ProprietorNo
Enumeration DateMay 11, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1417907205 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in NY · 107499
Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

44 S BAYLES AVE, Port Washington, NY 11050
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Other Identifiers 1

Medicaid01158401NY

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TRAVEL MEDICINE CONSULTANTS OF LONG ISLAND, PC
Internal Medicine (Infectious Disease)
44 S BAYLES AVE, SUITE 216
PORT WASHINGTON, NY 11050
Nassau County (516) 767-7771
OSCAR KRANZ,MD,PC
Ophthalmology
44 S BAYLES AVE, SUITE 204
PORT WASHINGTON, NY 11050
Nassau County (516) 883-8300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joel Greenspan's NPI number?

The NPI number for Joel Greenspan is 1417907205. It was assigned to this individual provider in the NPPES registry on May 11, 2006.

Where is Joel Greenspan located?

Joel Greenspan practices at 44 S Bayles Ave Suite 216, Port Washington, NY 11050. The listed phone number is (516) 767-7771.

What is Joel Greenspan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

When was this NPI record last updated?

The NPPES record for Joel Greenspan was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.