James Turner
James Turner is an Endocrinology, Diabetes & Metabolism Physician in Memphis, TN, registered under NPI 1689109217.
Getting there
The practice address on file is 5659 S REX RD, Memphis, TN 38119. 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 |
|---|---|---|
| 421931 | TN | Endocrinology, Diabetes & Metabolism… primary |
This provider holds licence 421931 issued in TN. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Endocrinology
- PAC ID
- 8628453263
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Tennessee | I20220916002211 | Practitioner - Endocrinology |
| California | I20230824003416 | Practitioner - Endocrinology |
| Mississippi | I20250912004349 | Practitioner - Endocrinology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Endocrinology. There are 3 separate enrolment records across 3 states (TN, CA, MS). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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.
What Endocrinology, Diabetes & Metabolism covers
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems. NUCC Health Care Provider Taxonomy, code 207RE0101X
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 | 1689109217 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 20, 2017 |
| Last updated | Oct 8, 2025 |
| Status | Active |
| Sole proprietor | No |
| Practice address |
5659 S REX RD Memphis, TN 38119 (901) 763-3636 Fax (901) 763-3694 |
| Mailing address |
350 N HUMPHREYS BLVD Memphis, TN 38120 |
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 | 6 | 8 | 9 | 1 | 0 | 9 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 7 | 9 | 2 | 0 | 9 | 2 | 2 |
Sum = 63 · next multiple of 10 = 70 · check digit = 7 · actual last digit = 7
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.