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Long Island Medical Oncology & Hematology Associates P C

Specialist in Merrick, NY · enumerated 2008 · authorized official Doron Weiner, MD.

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

National Provider Identifier

1245499789

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Registry record

Entity type Organization (Type 2)
Legal business name Long Island Medical Oncology & Hematology Associates P C
Practice address 2209 Merrick Rd, Merrick, NY, 11566
Phone (516) 546-5000
Fax (516) 546-0596
Enumeration date Jun 9, 2008
Last updated in NPPES Jul 15, 2009

Taxonomy & classification

174400000X Specialist Other Service Providers · License 180907-1 (NY) Primary

Authorized official

Name Doron Weiner
Title MD
Phone (516) 546-5000

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.

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Frequently asked questions

Who is the authorized official for Long Island Medical Oncology & Hematology Associates P C?
NPPES lists Doron Weiner (MD) as the authorized official for this organization.
What is the NPI number for Long Island Medical Oncology & Hematology Associates P C?
The NPI for Long Island Medical Oncology & Hematology Associates P C is 1245499789, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-15.