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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James A Oconnor, D.O.

Adult Medicine Physician in Ann Arbor, MI · enumerated 2006.

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

National Provider Identifier

1659442184

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Registry record

Entity type Individual (Type 1)
Name Dr. James A Oconnor
Credential D.O.
Sex Male
Practice address 315 E Eisenhower Pkwy, Suite 7, Ann Arbor, MI, 48108
Phone (734) 222-8200
Fax (734) 222-8202
Enumeration date Nov 13, 2006
Last updated in NPPES Dec 17, 2012

Taxonomy & licenses

207QA0505X Adult Medicine Physician Allopathic & Osteopathic Physicians · License 5101005756 (MI) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
11-2905678 Medicaid MI -

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

How do I verify James Oconnor's NPI record?
Cross-check NPI 1659442184 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1659442184 active?
Yes, as of the latest NPPES snapshot, NPI 1659442184 is active (record last updated 2012-12-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-17.