Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Bernard J. O'Brien, P.A.C.

Physician Assistant in Ossineke, MI · enumerated 2006.

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

National Provider Identifier

1871523977

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Bernard J. O'Brien

Credential P.A.C.

Sex Male

Practice address 11745 Us Highway 23 S, Ossineke, MI, 49766

Phone (989) 471-2156

Fax (989) 471-5257

Enumeration date Jul 4, 2006

Last updated in NPPES Jan 25, 2021

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 5601001564 (MI) 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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Bernard O'Brien?

Bernard O'Brien is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-25.