Mark W Hamm, DMD
Mark W Hamm is a General Practice Dentistry provider (Dentist) practicing in Roseburg, OR, registered in the NPPES registry with NPI 1225035207 since 2005. The credential DMD stands for Doctor of Medicine in Dentistry.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1225035207 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark W Hamm |
| Credential | DMD |
| Sex | Male |
| Practice address | 1313 W HARVARD AVE, Roseburg, OR, 97470 |
| Phone | 5416733355 |
| Fax | 5416731533 |
| Enumeration date | 2005-07-05 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | 5836 | OR |
DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential
Copy-ready billing details
Provider: Mark Hamm, DMD NPI: 1225035207 Taxonomy: 1223G0001X (General Practice Dentistry) Address: 1313 W HARVARD AVE, Roseburg, OR, 97470
Verify this record
Cross-check NPI 1225035207 against the authoritative CMS record: view Mark W Hamm 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 2007-07-08.