William Richard Slagle, PHD
William Richard Slagle is a Clinical Psychologist provider (Psychologist) practicing in Henderson, NV, registered in the NPPES registry with NPI 1114943016 since 2006. The credential PHD stands for Doctor of Philosophy. Practices at Henderson Psychiatry Corporation (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1114943016 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | William Richard Slagle |
| Credential | PHD |
| Sex | Male |
| Practice address | 1070 WIGWAM PKWY STE 100, Henderson, NV, 89074 |
| Phone | 7024540201 |
| Fax | 7024541245 |
| Enumeration date | 2006-07-14 |
| Last updated in NPPES | 2022-10-04 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | PY0456 | NV |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 002602052 | Medicaid | NV | — |
Copy-ready billing details
Provider: William Slagle, PHD NPI: 1114943016 Taxonomy: 103TC0700X (Clinical Psychologist) Address: 1070 WIGWAM PKWY STE 100, Henderson, NV, 89074
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1588698716 | Lawrence Kapel | Individual | Clinical Psychologist | Henderson, NV |
| 1467998500 | Elizabeth Holiday | Individual | Marriage & Family Therapist | Henderson, NV |
| 1235906330 | Henderson Psychiatry Corporation | Organization | Psychiatric/Mental Health Nurse Practitioner | Henderson, NV |
Verify this record
Cross-check NPI 1114943016 against the authoritative CMS record: view William Richard Slagle 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
How do I verify William Slagle's NPI record?
Is NPI 1114943016 active?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-10-04.