Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Connor B Weir, DO
Surgery Physician in Lansing, MI · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366937823
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Registry record
Entity type Individual (Type 1)
Name Connor B Weir
Credential DO
Sex Male
Practice address 401 W Greenlawn Ave, Lansing, MI, 48910
Phone (517) 975-6000
Enumeration date Jun 27, 2018
Last updated in NPPES Jul 16, 2023
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 5101024157 (MI) Secondary
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
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.
Frequently asked questions
Is NPI 1366937823 active?
Yes, as of the latest NPPES snapshot, NPI 1366937823 is active (record last updated 2023-07-16).
How do I verify Connor Weir's NPI record?
Cross-check NPI 1366937823 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-16.