Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Dewey Young Mcwhirter III, MD

Sleep Specialist (PhD) in Powell, TN · enumerated 2007 · practices at Tranquility Sleep Specialists Plc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1215050117

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Registry record

Entity type Individual (Type 1)

Name Dr. Dewey Young Mcwhirter III

Credential MD

Sex Male

Practice address 7557 Dannaher Dr Ste 240, Powell, TN, 37849

Phone (865) 859-7800

Fax (865) 859-7809

Enumeration date Apr 8, 2007

Last updated in NPPES Sep 6, 2024

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 054325 (GA) Secondary

2084S0012X Sleep Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 2007-00938 (NC) Secondary

2084S0012X Sleep Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 30216 (SC) Secondary

2084S0012X Sleep Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 43153 (TN) Secondary

173F00000X Sleep Specialist (PhD) Other Service Providers · License MD0000043153 (TN) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Dewey Mcwhirter practice?

The practice location on file with NPPES is in Powell, TN. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Dewey Mcwhirter?

The National Provider Identifier (NPI) for Dewey Mcwhirter is 1215050117, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Tranquility Sleep Specialists Plc Sleep Medicine (Psychiatry & Neurology) Physician · Powell, TN NPI 1346543568 Kaitlyn Alex Nurse Practitioner · Powell, TN NPI 1275409948 Rebecca Crum Sleep Medicine (Family Medicine) Physician · Powell, TN NPI 1518894617

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-06.