1. Home
  2. Directory
  3. Tennessee
  4. Powell
  5. Sleep Specialist Phd
  6. NPI Profile

DR. DEWEY YOUNG MCWHIRTER III MD
NPI 1215050117
Sleep Specialist, PhD in Powell, TN

Active since April 08, 2007PECOS EnrolledAccepts Medicare Assignment
7557 DANNAHER DR STE 240, POWELL, TN 37849(865) 859-7800(865) 859-7809 Get Directions Write a Review

NPPES record last updated: September 6, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 6, 2024, Mar 20, 2018 (2 updates tracked since 2018).

About Dr. Dewey Young Mcwhirter Iii Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DEWEY YOUNG MCWHIRTER III MD (NPI 1215050117) is an individual sleep specialist, phd provider in Powell, Tennessee, licensed in Tennessee (MD0000043153) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Lafollette Medical Center, and maintains a secondary practice location in Knoxville.

NPPES Registry Identity

NPI1215050117
Entity TypeIndividualMale
Primary Taxonomy173F00000X
Provider Legal NameDR. DEWEY YOUNG MCWHIRTER IIICredential: MD
Location Address7557 DANNAHER DR STE 240Powell, TN 37849-3563
Mailing Address3232 Tazewell PikeKnoxville, TN 37918-2503 · (865) 862-5460 · Fax (888) 381-3723
Phone(865) 859-7800
Fax(865) 859-7809
Sole ProprietorNo
Medical School CMSMedical University Of South Carolina College Of MedicineGraduated 2002
Enumeration DateApril 8, 2007
Last NPPES UpdateSeptember 6, 20242 updates tracked since enumeration
NPPES CertifiedSeptember 6, 2024
✔ NPI 1215050117 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySleep Specialist, PhDOther Service Providers
Taxonomy Code173F00000X
License✔ Licensed in TN · MD0000043153
Definition
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.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License 054325 (GA)
Also ListedPsychiatry & Neurology · Sleep MedicineTaxonomy 2084S0012X · License 2007-00938 (NC), 30216 (SC), 43153 (TN)
7557 DANNAHER DR STE 240, Powell, TN 37849
Open in Google Maps ↗

Secondary Practice Location 1

Location 110800 Parkside Dr Ste 202Knoxville, TN 37934-1922 · Phone (865) 218-7463 · Fax (865) 218-7275

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee, Cigna Healthcare, Oscar Insurance Company and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Dewey Young Mcwhirter Iii Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123115615
PECOS Enrollment IDI20080205000609
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Dewey Mcwhirter reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Tranquility Sleep Specialists Plc
Same address
Sleep Medicine
7557 DANNAHER DR STE 240
Powell, TN 37849
  • Reassigned Medicare billing, Tennessee enrollment
  • 9 clinicians in this Medicare group
NPI 1346543568 (865) 859-7800

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
99 services80 patients
Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811
A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.
65 services59 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
64 services56 patients
Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811
A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.
61 services55 patients
Sleep study in sleep lab (6 years or older) 95810
A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.
53 services53 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
45 services43 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Lafollette Medical Center

Acute Care Hospitals · La Follette, TN
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number440033
Location923 East Central AvenueLa Follette, TN 37766 · Campbell County
Emergency services

Physicians Regional Medical Center

Acute Care Hospitals · Powell, TN
2/5 CMS rating
OwnershipProprietary
CMS Certification Number440120
Location7565 Dannaher Way PowellPowell, TN 37849 · Knox County
Emergency services Birthing friendly

Referred Medical Equipment & Supplies CMS DME claims 18

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
36 suppliers616 claims617 services$33.58 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
33 suppliers314 claims315 services$82.91 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
32 suppliers310 claims830 services$32.23 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
24 suppliers223 claims1,199 services$18.15 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
27 suppliers194 claims1,079 services$12.98 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
34 suppliers427 claims427 services$48.54 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KAITLYN ALEX
Nurse Practitioner
7557 DANNAHER DR STE 240
POWELL, TN 37849
Knox County (865) 859-7800
TRANQUILITY SLEEP SPECIALISTS PLC
Psychiatry & Neurology (Sleep Medicine)
7557 DANNAHER DR STE 240
POWELL, TN 37849
Knox County (865) 859-7800
REBECCA CRUM MSN, APRN, FNP-C
Family Medicine (Sleep Medicine)
7557 DANNAHER DR STE 240
POWELL, TN 37849
Knox County (865) 859-7800

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dewey Mcwhirter's NPI number?

The NPI number for Dewey Mcwhirter is 1215050117. It was assigned to this individual provider in the NPPES registry on April 8, 2007.

Where is Dewey Mcwhirter located?

Dewey Mcwhirter practices at 7557 Dannaher Dr Ste 240, Powell, TN 37849. The listed phone number is (865) 859-7800.

What is Dewey Mcwhirter's specialty?

The primary specialty registered for this NPI is Sleep Specialist, PhD with taxonomy code 173F00000X.

Is Dewey Mcwhirter enrolled in Medicare?

Yes. Dewey Mcwhirter is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Dewey Mcwhirter's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dewey Mcwhirter reassigns Medicare benefits to Tranquility Sleep Specialists Plc (Powell, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Dewey Mcwhirter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Dewey Mcwhirter accept?

Health plans from BlueCross BlueShield of Tennessee, Cigna Healthcare, Oscar Insurance Company and UnitedHealthcare list Dewey Mcwhirter as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Dewey Mcwhirter affiliated with any hospitals?

According to CMS data, Dewey Mcwhirter is affiliated with Lafollette Medical Center and Physicians Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Dewey Mcwhirter was last updated on September 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.