Welcome to Tranquility
Sleep Specialists

Whether you’re too sleepy during the day or not sleeping well at night, our experts can help.

Book an appointment
Dr. Dewey McWhirter beside a CPAP machine on the exam room counter

Helpful Links

CPAP Talk (opens in a new tab)
REMzzzs mask liners (opens in a new tab)
Chin up strips (opens in a new tab)
REMaTee (opens in a new tab)
Zzoma (opens in a new tab)
Pad-a-cheek (opens in a new tab)

Tranquility sleep specialists

CPAP Help

CPAP stands for Continuous Positive Airway Pressure. CPAP is used to treat sleep apnea. It involves wearing a mask that is connected by a tube to a small machine that sits beside the bed. This machine blows in air which props the airway open and keeps it from collapsing at night. CPAP is a great treatment for sleep apnea, but many patients have difficulty getting used to it. At Tranquility Sleep Specialists, we work with patients and their medical equipment company to make CPAP as comfortable as possible. We are able to find a way to make CPAP work for the majority of our patients. If CPAP ultimately does not work out, we help patients understand their options and try to find a treatment that will work for them.

Our Specialties

Sleep Disorders

Obstructive
Sleep Apnea Central Sleep
Apnea Narcolepsy Insomnia Parasomnias Restless Legs
Syndrome

Are you having a problem with your sleep? Call and schedule a consultation today!

(865) 859-7800

Our Experts

Meet Our Sleep Experts

Dewey McWhirter, MD

Sleep Expert

Michelle Dobreski

Administrator

Kaitlyn Alex, FNP-C

Nurse Practitioner

Becca Crum, FNP-C

Nurse Practitioner

Physician Referrals

Tranquility Sleep Specialists can provide your patients with expert care for all their sleep problems. Dr. Dewey McWhirter is board certified in Sleep Medicine. He sees patients as young as three years.

Download Our Referral Form (PDF) (opens in a new tab)

Our Contacts

North

7557 Dannaher Way Suite 240
Powell, TN 37849

865-859-7800

West

10800 Parkside Drive, Suite 202
Knoxville, TN 37934

865-218-7463

Open Hours

Monday
8:30AM - 4:30PM
Tuesday
8:30AM - 4:30PM
Wednesday
8:30AM - 4:30PM
Thursday
8:30AM - 4:30PM
Friday
8:30AM - 4:30PM
Saturday
Closed
Sunday
Closed

Patient Rights & Responsibilities, HIPAA (PDF) (opens in a new tab)

Dewey McWhirter, MD

Sleep Medicine has been Dr. McWhirter's passion for decades. He became interested in sleep medicine while dealing with his own sleep problems in high school and college. He earned degrees in English, Biochemistry, and Chemistry from Bowdoin College and the College of Charleston. He focused on sleep medicine in medical school at the Medical University of South Carolina and during his residency in Neurology at Emory University. During a Sleep Medicine fellowship at the Cleveland Clinic, he trained under some of the world's leading experts in the field of sleep medicine. Dr. McWhirter is board certified in Sleep Medicine. He has been treating patients with sleep disorders in east Tennessee since 2007. He is interested in all areas of sleep medicine but he has a special interest in narcolepsy and delayed sleep phase syndrome. Dr. Dewey McWhirter is board certified in neurology & sleep medicine by the American Board of Psychology and Neurology.

Kaitlyn Alex, FNP-C

Kaitlyn is a family nurse practitioner who earned her BSN from the University of TN, Knoxville, and her MSN from East TN State University.

With a background in high-risk maternal-newborn nursing, Kaitlyn brings empathy, attention to detail, and a passion for improving her patients' well-being to her work in sleep medicine. She enjoys partnering with patients to find personalized solutions that promote healthy sleep and overall wellness.

Outside of work, Kaitlyn loves spending time outdoors with her husband, crafting and taking on new adventures-her favorite so far has been skydiving!

Becca Crum, FNP-C

Becca is a Family Nurse Practitioner who obtained both her BSN and MSN degrees from Lincoln Memorial University. She is a lifelong resident of Knoxville, Tennessee and is passionate about helping patients in her community.

Becca's experience as a psychiatric nurse has given her a compassionate perspective and a unique understanding of the complex challenges patients face. Becca is an advocate for consistent restorative sleep, seeing firsthand how sleep can affect a person's mental, physical, and emotional health and well-being.

In her free time, Becca enjoys reading, spending time with her family and friends and playing with her many pets!