Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Patrick Farrell Hammen, M.D.
Colon & Rectal Surgery Physician in Smyrna, GA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1164461505
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 000791392A | Medicaid | GA | - |
| G43383 | Medicaid | SC | - |
| 10065608 | Other | GA | AMERIGROUP |
| 280000998 | Other | GA | RAILROAD MEDICARE |
| 000791392C | Medicaid | GA | - |
| 000791392B | Medicaid | GA | - |
| 349778 | Other | GA | WELLCARE |
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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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-09.