Christopher Slack, PHD
Christopher Slack is a Counseling Psychologist provider (Psychologist) practicing in Grapevine, TX, registered in the NPPES registry with NPI 1407593221 since 2022. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1407593221 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Christopher Slack |
| Credential | PHD |
| Sex | Male |
| Practice address | Grapevine, TX, 76051 |
| Phone | 8173295041 |
| Enumeration date | 2022-05-13 |
| Last updated in NPPES | 2022-05-13 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC1900X | Counseling Psychologist | Primary | 38821 | TX |
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: Christopher Slack, PHD NPI: 1407593221 Taxonomy: 103TC1900X (Counseling Psychologist) Address: Grapevine, TX, 76051
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1417054750 | Delisa Perry | Individual | Mental Health Counselor | Grapevine, TX |
| 1710216668 | Katherine Goodell | Individual | Marriage & Family Therapist | Grapevine, TX |
| 1568883858 | Carmen Pemberton Pllc | Organization | Adult Mental Health Clinic/Center | Grapevine, TX |
| 1396124285 | Kari Leavell, Phd, Pllc | Organization | Adult Mental Health Clinic/Center | Grapevine, TX |
| 1750760641 | Kari Leavell | Individual | Counseling Psychologist | Grapevine, TX |
| 1295306611 | Meghan Cromie | Individual | Mental Health Counselor | Grapevine, TX |
| 1730990706 | Anna Garcia | Individual | Clinical Social Worker | Grapevine, TX |
| 1669279642 | Abigail Powell | Individual | Psychologist | Grapevine, TX |
Verify this record
Cross-check NPI 1407593221 against the authoritative CMS record: view Christopher Slack 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.
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-05-13.