Active NPI
William O Thomason, PH.D
- Family Psychologist
- Terrell, TX
National Provider Identifier
1912069543
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Psychologist
- License
- 25481
- Practice address
- 1200 E Brin St
Terrell, TX 75160 - Phone
- (972) 551-8826
- NPI assigned
- Dec 13, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Addiction (Substance Use Disorder) Psychologist | 103TA0400X | 25481 | TX | |
| Clinical Psychologist | 103TC0700X | 25481 | TX | |
| Family Psychologist | 103TF0000X | 25481 | TX | Primary |
Addresses
Primary practice location
1200 E Brin St
Terrell, TX 75160
Mailing address
PO Box 70
Terrell, TX 75160
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 25481 | TX | MD | General Practice Dentistry |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Diversified Consulting, Inc. | Clinical | Past | Accepting new patients |
| Health and Human Services Commission | Past | Accepting new patients |
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Clinical Psychologist
- Sherman, TX
- NPI 1528186673
-
- Long Term Care Pharmacy
- Terrell, TX
- NPI 1740299775
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1165968000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1912069543",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 70",
"city": "TERRELL",
"state": "TX",
"postal_code": "75160"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1200 E BRIN ST",
"city": "TERRELL",
"state": "TX",
"postal_code": "75160",
"telephone_number": "972-551-8826"
}
],
"practiceLocations": [],
"basic": {
"last_name": "THOMASON",
"first_name": "WILLIAM",
"middle_name": "O",
"credential": "PH.D",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-12-13",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "103TA0400X",
"taxonomy_group": "",
"desc": "Psychologist, Addiction (Substance Use Disorder)",
"state": "TX",
"license": "25481",
"primary": false
},
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "TX",
"license": "25481",
"primary": false
},
{
"code": "103TF0000X",
"taxonomy_group": "",
"desc": "Psychologist, Family",
"state": "TX",
"license": "25481",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Terrell, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.