NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark Gennaro MD PC

Vascular Sonography Radiologic Technologist in Greenlawn, NY · enumerated 2016 · authorized official Victoria Betz, Practice Manager.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1861856262

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Mark Gennaro MD PC
Practice address 270 Pulaski Rd, Greenlawn, NY, 11740
Phone (631) 385-7258
Enumeration date Apr 12, 2016
Last updated in NPPES Apr 12, 2016

Taxonomy & classification

2471V0105X Vascular Sonography Radiologic Technologist Technologists, Technicians & Other Technical Service Providers Primary

Authorized official

Name Victoria Betz
Title Practice Manager
Phone (631) 385-7258

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Mark Gennaro MD PC?
Mark Gennaro MD PC is registered in NPPES as a Vascular Sonography Radiologic Technologist (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-12.