Connor B Weir, DO
Connor B Weir is a Surgery Physician provider (Surgery) practicing in Lansing, MI, registered in the NPPES registry with NPI 1366937823 since 2018. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1366937823 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Connor B Weir |
| Credential | DO |
| Sex | Male |
| Practice address | 401 W GREENLAWN AVE, Lansing, MI, 48910 |
| Phone | 5179756000 |
| Enumeration date | 2018-06-27 |
| Last updated in NPPES | 2023-07-16 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 390200000X | Student in an Organized Health Care Education/Training Program | Secondary | 5101024157 | MI |
| 208600000X | Surgery Physician | Primary | DO.3238 | AL |
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
Copy-ready billing details
Provider: Connor Weir, DO NPI: 1366937823 Taxonomy: 208600000X (Surgery Physician) Address: 401 W GREENLAWN AVE, Lansing, MI, 48910
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1700881059 | Craig Cole | Individual | Hematology (Internal Medicine) Physician | Lansing, MI |
| 1548252034 | Susan Fehr | Individual | Pharmacist | Lansing, MI |
| 1417949959 | Ronald Cosson | Individual | Pharmacist | Lansing, MI |
| 1083692255 | Heather Adams | Individual | Pediatrics Physician | Lansing, MI |
| 1588642763 | Martha Feher | Individual | Pediatrics Physician | Lansing, MI |
| 1235117318 | Mary Ording | Individual | Pediatrics Physician | Lansing, MI |
| 1801876818 | Mclaren Greater Lansing | Organization | Rehabilitation Hospital Unit | Lansing, MI |
| 1447297742 | Diane Macdonald | Individual | Hematology & Oncology Physician | Lansing, MI |
Verify this record
Cross-check NPI 1366937823 against the authoritative CMS record: view Connor B Weir 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-07-16.