NPI Portal NPI Lookup & Verification

Dr. Peter J. O'Brien, D.C.

Dr. Peter J. O'Brien is a Chiropractor provider (Chiropractor) practicing in Champaign, IL, registered in the NPPES registry with NPI 1750667770 since 2011. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1750667770
Entity type Individual (Type 1)
Name Dr. Peter J. O'Brien
Credential D.C.
Sex Male
Practice address Champaign, IL, 61822
Phone 2176497816
Enumeration date 2011-10-24
Last updated in NPPES 2011-10-24

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary 038006056 IL

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details
Provider: Peter O'Brien, D.C.
NPI: 1750667770
Taxonomy: 111N00000X (Chiropractor)
Address: Champaign, IL, 61822

Verify this record

Cross-check NPI 1750667770 against the authoritative CMS record: view Dr. Peter J. O'Brien on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Peter O'Brien?
Peter O'Brien is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-10-24.