Dr. William John Graf, DDS
Dr. William John Graf is a Dentist provider (Dentist) practicing in Middleton, WI, registered in the NPPES registry with NPI 1891861092 since 2006. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1891861092 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. William John Graf |
| Credential | DDS |
| Sex | Male |
| Practice address | 7780 ELMWOOD AVE, Middleton, WI, 53562 |
| Phone | 6088361020 |
| Enumeration date | 2006-11-28 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | 3696 | WI |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: William Graf, DDS NPI: 1891861092 Taxonomy: 122300000X (Dentist) Address: 7780 ELMWOOD AVE, Middleton, WI, 53562
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1164415519 | Gerhard Kraske | Individual | Internal Medicine Physician | Middleton, WI |
| 1396717401 | Kenneth Felz | Individual | Internal Medicine Physician | Middleton, WI |
| 1366414161 | Mark Davis | Individual | Internal Medicine Physician | Middleton, WI |
| 1912949256 | Irene Mirkin | Individual | Internal Medicine Physician | Middleton, WI |
| 1871520890 | Paul Nemovitz | Individual | Internal Medicine Physician | Middleton, WI |
| 1891985412 | Jane Nelson-Worel | Individual | Nurse Practitioner | Middleton, WI |
| 1073865598 | Ioana Huibregtse | Individual | Nurse Practitioner | Middleton, WI |
| 1487016523 | Sara Lasker | Individual | Health Educator | Middleton, WI |
Verify this record
Cross-check NPI 1891861092 against the authoritative CMS record: view Dr. William John Graf 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.