Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John O'Sullivan, MBBS

Surgery Physician in Cambridge, MN · enumerated 2006.

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

National Provider Identifier

1689634370

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Registry record

Entity type Individual (Type 1)

Name John O'Sullivan

Credential MBBS

Sex Male

Practice address 701 Dellwood St S, Cambridge, MN, 55008

Phone (763) 689-7700

Fax (763) 689-7941

Enumeration date Mar 25, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 35074 (MN) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 3657 (MT) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 0693 (SD) Secondary

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

How do I verify John O'Sullivan's NPI record?

Cross-check NPI 1689634370 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689634370 active?

Yes, as of the latest NPPES snapshot, NPI 1689634370 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.