Dewey Mcwhirter, MD
Dewey Mcwhirter, MD is a Sleep Specialist (PhD) in Powell, TN, registered under NPI 1215050117. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 7557 DANNAHER DR STE 240, Powell, TN 37849. 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 |
|---|---|---|
| MD0000043153 | TN | Sleep Specialist (PhD) primary |
| 054325 | GA | Neurology Physician |
| 2007-00938 | NC | Sleep Medicine (Psychiatry & Neurology)… |
| 30216 | SC | Sleep Medicine (Psychiatry & Neurology)… |
| 43153 | TN | Sleep Medicine (Psychiatry & Neurology)… |
Licences are recorded in 4 states: TN, GA, NC, SC. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Sleep Medicine
- PAC ID
- 8123115615
Medicare enrolment is recorded as approved under the provider type Practitioner - Sleep Medicine. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 4 states
This provider holds licences in 4 states: Georgia, North Carolina, South Carolina and Tennessee. The practice address on file is in Powell, TN, 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
- 2007-00938
- Specialty
- Sleep Medicine (Psychiatry & Neurology)…
- Licence
- 30216
- Specialty
- Sleep Medicine (Psychiatry & Neurology)…
- Licence
- MD0000043153
- Specialty
- Sleep Specialist (PhD)
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 Sleep Specialist, PhD covers
Sleep medicine is a clinical specialty with a focus on clinical problems that require accurate diagnosis and treatment. The knowledge base of sleep medicine is derived from many disciplines including neuroanatomy, neurophysiology, respiratory physiology, pharmacology, psychology, psychiatry, neurology, general internal medicine, pulmonary medicine, and pediatrics as well as others. NUCC Health Care Provider Taxonomy, code 173F00000X
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 | |
|---|---|---|---|---|
| 173F00000X | Sleep Specialist (PhD) | MD0000043153 | TN | primary |
| 2084N0400X | Neurology Physician Neurology | 054325 | GA | |
| 2084S0012X | Sleep Medicine (Psychiatry & Neurology) Physician Sleep Medicine | 2007-00938 | NC | |
| 2084S0012X | Sleep Medicine (Psychiatry & Neurology) Physician Sleep Medicine | 30216 | SC | |
| 2084S0012X | Sleep Medicine (Psychiatry & Neurology) Physician Sleep Medicine | 43153 | TN |
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 | 1215050117 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 8, 2007 |
| Last updated | Sep 6, 2024 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
7557 DANNAHER DR STE 240 Powell, TN 37849 (865) 859-7800 Fax (865) 859-7809 |
| Mailing address |
3232 TAZEWELL PIKE Knoxville, TN 37918 |
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 | 2 | 1 | 5 | 0 | 5 | 0 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 2 | 5 | 0 | 5 | 0 | 1 | 2 |
Sum = 43 · next multiple of 10 = 50 · 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.