JOHN R CARDER MD PC
JOHN R CARDER MD PC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1417328543, based in Knoxville, TN. It is classified under Undersea and Hyperbaric Medicine (Emergency Medicine) Physician.
Getting there
The practice address on file is 1940 ALCOA HWY E40, Knoxville, TN 37920. 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 |
|---|---|---|
| 30444 | TN | Undersea and Hyperbaric Medicine… primary |
This provider holds licence 30444 issued in TN. 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 Undersea and Hyperbaric Medicine covers
A specialist who treats decompression illness and diving accident cases and uses hyperbaric oxygen therapy to treat such conditions as carbon monoxide poisoning, gas gangrene, non-healing wounds, tissue damage from radiation and burns, and bone infections. This specialist also serves as a consultant to other physicians in all aspects of hyperbaric chamber operations, and assesses risks and applies appropriate standards to prevent disease and disability in divers and other persons working in altered atmospheric conditions. NUCC Health Care Provider Taxonomy, code 207PE0005X
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 | 1417328543 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Oct 15, 2015 |
| Last updated | Dec 9, 2015 |
| Status | Active |
| Practice address |
1940 ALCOA HWY E40 Knoxville, TN 37920 (865) 670-6750 Fax (865) 670-6115 |
| Mailing address |
PO BOX 1731 Gilbert, AZ 85299 |
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 | 4 | 1 | 7 | 3 | 2 | 8 | 5 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 2 | 7 | 6 | 2 | 7 | 5 | 8 |
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.