Tess Powers-lagos, CCC-SLP
Tess Powers-lagos, CCC-SLP is a provider specialising in Speech-Language Pathologist in Holliston, MA, registered under NPI 1922972413. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 484 UNDERWOOD ST, Holliston, MA 01746. 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
| Licence | State | Specialty |
|---|---|---|
| SLP101509 | MA | Speech-Language Pathologist primary |
| 035937-01 | NY | Speech-Language Pathologist |
Licences are recorded in 2 states: MA, NY. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Qualified Speech Language Pathologist
- PAC ID
- 8123518313
- Enrollment ID
- I20251106001922
Medicare enrolment is recorded as approved under the provider type Practitioner - Qualified Speech Language Pathologist. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: Massachusetts and New York. The practice address on file is in Holliston, MA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- SLP101509
- Specialty
- Speech-Language Pathologist
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Speech-Language Pathologist covers
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing. NUCC Health Care Provider Taxonomy, code 235Z00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 235Z00000X | Speech-Language Pathologist | SLP101509 | MA | primary |
| 235Z00000X | Speech-Language Pathologist | 035937-01 | NY |
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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1922972413 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 30, 2025 |
| Last updated | Sep 30, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | CCC-SLP |
| Practice address |
484 UNDERWOOD ST Holliston, MA 01746 (781) 392-7588 |
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 | 9 | 2 | 2 | 9 | 7 | 2 | 4 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 4 | 2 | 9 | 7 | 4 | 4 | 2 |
Sum = 67 · next multiple of 10 = 70 · check digit = 3 · actual last digit = 3
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.