Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christopher Hapner

Emergency Medicine Physician in Ann Arbor, MI · enumerated 2015 · practices at Regents of the University of Michigan.

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

National Provider Identifier

1891175865

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Registry record

Entity type Individual (Type 1)

Name Christopher Hapner

Sex Male

Practice address 1500 E. Medical Center Drive, Ann Arbor, MI, 48109

Phone (734) 763-7919

Fax (734) 763-9298

Enumeration date Jun 4, 2015

Last updated in NPPES Jul 3, 2019

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 5101021903 (MI) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 5101021903 (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 NPI 1891175865 active?

Yes, as of the latest NPPES snapshot, NPI 1891175865 is active (record last updated 2019-07-03).

How do I verify Christopher Hapner's NPI record?

Cross-check NPI 1891175865 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 2019-07-03.