Dr. Marilyn Kay Thomas, PHD
Dr. Marilyn Kay Thomas is a Addiction (Substance Use Disorder) Counselor provider (Counselor) practicing in Lancaster, TX, registered in the NPPES registry with NPI 1508418336 since 2019. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1508418336 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Marilyn Kay Thomas |
| Credential | PHD |
| Sex | Female |
| Practice address | Lancaster, TX, 75146 |
| Phone | 2149959364 |
| Enumeration date | 2019-07-11 |
| Last updated in NPPES | 2019-07-11 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YS0200X | School Counselor | Secondary | 1443726 | TX |
| 101YA0400X | Addiction (Substance Use Disorder) Counselor | Primary | — | TX |
| 101YP2500X | Professional Counselor | Secondary | — | — |
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: Marilyn Thomas, PHD NPI: 1508418336 Taxonomy: 101YA0400X (Addiction (Substance Use Disorder) Counselor) Address: Lancaster, TX, 75146
Verify this record
Cross-check NPI 1508418336 against the authoritative CMS record: view Dr. Marilyn Kay Thomas 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 2019-07-11.