Retia Grissett
Retia Grissett is a provider specialising in Private Vehicle in Columbia, SC, registered under NPI 1578038113. 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 3913 WESTMORE DR, Columbia, SC 29223. 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 |
|---|---|---|
| 008334577 | SC | Private Vehicle primary |
| 371446270 | SC | Private Vehicle |
This provider holds licence 008334577 issued in SC. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Private Vehicle covers
An individual paid to provide non-emergency transportation using their privately owned/leased vehicle. NUCC Health Care Provider Taxonomy, code 347C00000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 347C00000X | Private Vehicle | 008334577 | SC | primary |
| 347C00000X | Private Vehicle | 371446270 | SC | |
| 347C00000X | Private Vehicle | — | SC |
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 | 1578038113 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 10, 2018 |
| Last updated | Oct 10, 2018 |
| Status | Active |
| Sole proprietor | Yes |
| Practice address |
3913 WESTMORE DR Columbia, SC 29223 (803) 446-7480 |
| Mailing address |
4711 FOREST DR, STE 3 PMB 157 Columbia, SC 29206 |
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 | 5 | 7 | 8 | 0 | 3 | 8 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 5 | 8 | 0 | 3 | 7 | 1 | 2 |
Sum = 57 · next multiple of 10 = 60 · 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.