TIDEMARK THERAPY PLLC
TIDEMARK THERAPY PLLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1275939001, based in Denison, TX. The organization lists 8 taxonomy classifications, with Clinic/Center recorded as primary.
Getting there
The practice address on file is 305 W WOODARD ST STE 201, Denison, TX 75020. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 7416283775
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Clinic/Center covers
A facility or distinct part of one used for the diagnosis and treatment of outpatients. "Clinic/Center" is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health). NUCC Health Care Provider Taxonomy, code 261Q00000X
All registered taxonomy codes
This provider registers 8 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 261Q00000X | Clinic/Center | — | — | primary |
| 101Y00000X | Counselor | — | — | |
| 261QM0850X | Adult Mental Health Clinic/Center Adult Mental Health | — | — | |
| 261QM1300X | Multi-Specialty Clinic/Center Multi-Specialty | — | — | |
| 103T00000X | Psychologist | — | — | |
| 363LP0808X | Psychiatric/Mental Health Nurse Practitioner Psychiatric/Mental Health | — | — | |
| 1041C0700X | Clinical Social Worker Clinical | — | — | |
| 101YP2500X | Professional Counselor Professional | — | — |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1275939001 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Nov 5, 2014 |
| Last updated | Feb 24, 2026 |
| Status | Active |
| Practice address |
305 W WOODARD ST STE 201 Denison, TX 75020 (903) 265-8545 Fax (903) 487-0600 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 2 | 7 | 5 | 9 | 3 | 9 | 0 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 5 | 5 | 9 | 3 | 9 | 0 | 0 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.