POWELL ENDO PLLC
POWELL ENDO PLLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003360009, based in Knoxville, TN. It is classified under Endodontics.
Getting there
Here is what surrounds this office in Knoxville, based on OpenStreetMap data collected Sep 21, 2026. Parking is available about 177 ft away. The nearest transit stop is 0.36 mi away, served by Middlebrook Pk EB @ Dowell Springs.
Getting here and what is nearby
Parking 110 ft ~1 min
Parking 110 ft ~1 min
Parking 177 ft ~1 min
Transit Middlebrook Pk WB @ Lake Brook Blv Out 480 ft ~2 min
Transit Middlebrook Pk EB @ Lake Brook Blv Inb 571 ft ~3 min
Transit Middlebrook Pk EB @ Dowell Springs 0.36 mi ~8 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
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.
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 Endodontics covers
The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions. NUCC Health Care Provider Taxonomy, code 1223E0200X
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 | 1003360009 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Aug 8, 2016 |
| Last updated | Aug 8, 2016 |
| Status | Active |
| Practice address |
6908 OFFICE PARK CIR Knoxville, TN 37909 (865) 584-3510 |
| Mailing address |
10509 HARDIN VALLEY RD Knoxville, TN 37932 |
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 | 0 | 3 | 3 | 6 | 0 | 0 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 6 | 0 | 0 | 0 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
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.