Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Robert H. Messier Jr., M.D., PHD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Florence, SC · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740287200
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 203639329 | Other | - | TRICARE PROVIDER NUMBER |
| 6157892 | Other | - | CIGNA PROVIDER NUMBER |
| 010216346 | Other | - | VA PREMIER PROVIDER NUMBE |
| Q09906 | Medicaid | SC | - |
| 1740287200 | Medicaid | WI | - |
| 329092 | Other | - | SOUTHERN HEALTH PROVIDER |
| 010216346 | Medicaid | VA | - |
| 186353 | Other | - | ANTHEM PROVIDER NUMBER |
| 203639329 | Other | - | UNITED HEALTHCARE PROVIDE |
| 10002777 | Other | - | SENTARA/OPTIMA PROVIDER N |
| 203639329 | Other | - | PCHP PROVIDER NUMBER |
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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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-10.