Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Colon and Rectal Surgeons of Long Island, P.C.

Colon & Rectal Surgery Physician in East Setauket, NY · enumerated 2009 · authorized official Arnold Leiboff, President.

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

National Provider Identifier

1114165909

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Registry record

Entity type Organization (Type 2)

Legal business name Colon and Rectal Surgeons of Long Island, P.C.

Practice address 3400 Nesconset Hwy, Suite 100, East Setauket, NY, 11733

Phone (631) 689-2600

Fax (631) 689-2943

Enumeration date Feb 2, 2009

Last updated in NPPES Feb 2, 2009

Taxonomy & classification

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 142014 (NY) Secondary

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License 142014 (NY) Primary

Authorized official

Name Arnold Leiboff

Title President

Phone (631) 689-2600

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 Colon and Rectal Surgeons of Long Island, P.C.?

NPPES lists Arnold Leiboff (President) as the authorized official for this organization.

What is the NPI number for Colon and Rectal Surgeons of Long Island, P.C.?

The NPI for Colon and Rectal Surgeons of Long Island, P.C. is 1114165909, 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 2009-02-02.