Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Derek Joseph Atkinson

Anesthesiology Physician in Stony Brook, NY · enumerated 2013.

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

National Provider Identifier

1861734337

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Registry record

Entity type Individual (Type 1)

Name Derek Joseph Atkinson

Sex Male

Practice address Stony Brook Department of Anesthesiology, Stony Brook, NY, 11794

Phone (631) 444-2975

Enumeration date Mar 22, 2013

Last updated in NPPES Jul 3, 2018

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 293226-1 (NY) Primary

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

Is NPI 1861734337 active?

Yes, as of the latest NPPES snapshot, NPI 1861734337 is active (record last updated 2018-07-03).

How do I verify Derek Atkinson's NPI record?

Cross-check NPI 1861734337 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-03.