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Garden City Oncology,P.C.

Q: What type of organization is Garden City Oncology,P.C.?

Garden City Oncology,P.C. is registered in NPPES as a Medical Oncology Physician (its primary provider taxonomy).

Medical Oncology Physician in Garden City, NY · enumerated 2006 · authorized official Leo Wiener, Owner.

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

National Provider Identifier

1942363403

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Registry record

Entity type Organization (Type 2)

Legal business name Garden City Oncology,P.C.

Practice address 520 Franklin Ave, Suite 253, Garden City, NY, 11530

Phone (516) 742-5353

Fax (516) 742-4207

Enumeration date Dec 18, 2006

Last updated in NPPES Jan 4, 2010

Taxonomy & classification

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Leo Wiener

Title Owner

Phone (516) 742-5353

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 type of organization is Garden City Oncology,P.C.?

Garden City Oncology,P.C. is registered in NPPES as a Medical Oncology Physician (its primary provider taxonomy).

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-04.