Dr. Mandy J Williams, PH.D., CCC-SLP
Dr. Mandy J Williams is a Speech-Language Pathologist provider (Speech-Language Pathologist) practicing in Vermillion, SD, registered in the NPPES registry with NPI 1134289945 since 2006. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1134289945 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mandy J Williams |
| Credential | PH.D., CCC-SLP |
| Sex | Female |
| Practice address | 414 E CLARK ST, Vermillion, SD, 57069 |
| Phone | 6056776205 |
| Fax | 6056775767 |
| Enumeration date | 2006-12-11 |
| Last updated in NPPES | 2019-02-12 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 235Z00000X | Speech-Language Pathologist | Primary | 274-SLP | SD |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Copy-ready billing details
Provider: Mandy Williams, PH.D., CCC-SLP NPI: 1134289945 Taxonomy: 235Z00000X (Speech-Language Pathologist) Address: 414 E CLARK ST, Vermillion, SD, 57069
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1982664512 | Bruce Fischbach | Individual | Athletic Trainer | Vermillion, SD |
| 1346366044 | State of South Dakota | Organization | Audiologist | Vermillion, SD |
| 1659590503 | Marni Martin | Individual | Audiologist | Vermillion, SD |
| 1992924898 | Elizabeth Develder | Individual | Speech-Language Pathologist | Vermillion, SD |
| 1427278803 | Susan Niebel | Individual | Speech-Language Pathologist | Vermillion, SD |
| 1770703340 | Solveig Korte | Individual | Speech-Language Pathologist | Vermillion, SD |
| 1831319581 | Teresa Bellis | Individual | Audiologist | Vermillion, SD |
| 1871713560 | Elizabeth Hanson | Individual | Speech-Language Pathologist | Vermillion, SD |
Verify this record
Cross-check NPI 1134289945 against the authoritative CMS record: view Dr. Mandy J Williams 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 2019-02-12.