Elizabeth Sampson, SLP
Elizabeth Sampson, SLP is a provider specialising in Speech-Language Pathologist in Washington, DC, registered under NPI 1043965395. 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 400 K ST NW APT 1425, Washington, DC 20001. 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 |
|---|---|---|
| SLP200001817 | DC | Speech-Language Pathologist primary |
| SP-2050 | HI | Speech-Language Pathologist |
| 09067 | MD | Speech-Language Pathologist |
| 2202012215 | VA | Speech-Language Pathologist |
| 78685 | MA | Speech-Language Pathologist |
Licences are recorded in 5 states: DC, HI, MD, VA, MA. 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
- 3072005586
- Enrollment ID
- I20251121004441
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 5 states
This provider holds licences in 5 states: District of Columbia, Hawaii, Massachusetts, Maryland and Virginia. The practice address on file is in Washington, DC, 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
- SLP200001817
- 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 5 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 | SLP200001817 | DC | primary |
| 235Z00000X | Speech-Language Pathologist | SP-2050 | HI | |
| 235Z00000X | Speech-Language Pathologist | 09067 | MD | |
| 235Z00000X | Speech-Language Pathologist | 2202012215 | VA | |
| 235Z00000X | Speech-Language Pathologist | 78685 | MA |
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 | 1043965395 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 15, 2022 |
| Last updated | Nov 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | SLP |
| Practice address |
400 K ST NW APT 1425 Washington, DC 20001 (781) 915-9854 |
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 | 0 | 4 | 3 | 9 | 6 | 5 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 8 | 3 | 9 | 6 | 1 | 3 | 9 |
Sum = 65 · next multiple of 10 = 70 · check digit = 5 · actual last digit = 5
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.