Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Stony Brook Radiation Oncology, University Faculty Practice Corporatio

Radiation Oncology Physician in Stony Brook, NY · enumerated 2006 · authorized official Samuel Ryu, Chair Person.

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

National Provider Identifier

1730126517

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Registry record

Entity type Organization (Type 2)

Legal business name Stony Brook Radiation Oncology, University Faculty Practice Corporatio

Practice address Suny @ Stony Brook, Hsc, L2, Rm 643, Stony Brook, NY, 11797

Phone (631) 444-2206

Enumeration date Jun 1, 2006

Last updated in NPPES Dec 22, 2014

Taxonomy & classification

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Samuel Ryu

Title Chair Person

Phone (631) 444-2206

Other identifiers

Identifier	Type	State	Issuer
00822642	Medicaid	NY	-

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 Stony Brook Radiation Oncology, University Faculty Practice Corporatio?

Stony Brook Radiation Oncology, University Faculty Practice Corporatio is registered in NPPES as a Radiation 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-22.