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

Dr. Dewey Young McWhirter III, MD

Individual provider Neurology Physician · NPI 1215050117

Dr. Dewey Young McWhirter III, MD is a 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.

See every abbreviation used in this directory →

Practice location Address checks out

7557 Dannaher Dr Ste 240
Powell, TN 37849-3563
Phone: (865) 859-7800
Fax: (865) 859-7809
Show map & directions

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