Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Christopher Colby, M.D.
Obstetrics & Gynecology Physician in Christiansburg, VA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1760523310
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 010097061 | Medicaid | VA | - |
| 145140 | Other | VA | ANTHEM |
| 425133 | Other | VA | SOUTHERN HEALTH |
| 010092973 | Medicaid | VA | - |
| 010092973 | Other | VA | VA PREMIER |
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
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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-15.