Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Dr. Christopher R Grieves, M.D.
Emergency Medicine Physician in Houston, TX · enumerated 2006 · practices at Great American Emergency Physicians, Pllc.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1144296237
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Registry record
Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2043408 | Medicaid | MA | - |
| 1144296237 | Other | TX | BCBSTX |
| 8CF697 | Other | - | BCBSTX |
| 8EB550 | Other | TX | BCBSTX |
| 211497701 | Medicaid | TX | - |
| 1144296237 | Other | TX | TRICARE SOUTH |
| 211497702 | Medicaid | TX | - |
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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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-14.