Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Dewey Young McWhirter III, MD

Individual provider Neurology Physician · NPI 1215050117

Dr. Dewey Young McWhirter III, MD practises Sleep Medicine in Powell, Tennessee. Graduated from Medical University of South Carolina College of Medicine in 2002, 24 years ago. Practices with Tranquility Sleep Specialists PLC, a 5-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Georgia, North Carolina, South Carolina and Tennessee.

Years since qualifying
24
Trained at
Medical University of South Carolina College of Medicine
Licensed in
GA, NC, SC, TN
In the registry since
2007
Specialties on file
5
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7557 Dannaher Dr Ste 240
Powell, TN 37849-3563
Phone: (865) 859-7800
Fax: (865) 859-7809
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 10800 Parkside Dr Ste 202, Knoxville, TN 37934-1922 — (865) 218-7463

Specialties & licences

Sleep Specialist (PhD) (primary) Taxonomy 173F00000X · Licence MD0000043153 (TN)
Neurology Physician Taxonomy 2084N0400X · Licence 054325 (GA)
Sleep Medicine (Psychiatry & Neurology) Physician Taxonomy 2084S0012X · Licence 2007-00938 (NC)
Sleep Medicine (Psychiatry & Neurology) Physician Taxonomy 2084S0012X · Licence 30216 (SC)
Sleep Medicine (Psychiatry & Neurology) Physician Taxonomy 2084S0012X · Licence 43153 (TN)

Record details

NPI number1215050117
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 8, 2007
Last updated in NPPESSeptember 6, 2024
Certification dateSeptember 6, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtySLEEP MEDICINE
Also practisesNEUROLOGY
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Tranquility Sleep Specialists Plc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients367
Services billed 631 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $625 25 payments · a meal or drink at a meeting or visit, not a fee
Education $100 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Tranquility Sleep Specialists PLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.