NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Michael O'Brien, DMD

Dentist in Okmulgee, OK · enumerated 2015.

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

National Provider Identifier

1629451067

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Registry record

Entity type Individual (Type 1)
Name Dr. Michael O'Brien
Credential DMD
Sex Male
Practice address Okmulgee, OK, 74447
Phone (918) 606-0213
Enumeration date Jul 2, 2015
Last updated in NPPES Jul 2, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License 6746 (OK) Primary
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

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

Is NPI 1629451067 active?
Yes, as of the latest NPPES snapshot, NPI 1629451067 is active (record last updated 2015-07-02).
How do I verify Michael O'Brien's NPI record?
Cross-check NPI 1629451067 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-02.