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The Lung and Sleep Center

The Lung and Sleep Center in Panama City, FL is a practice specializing in Pulmonary and sleep medicine.  Dr. William Tony McKenzie is an American Board of Internal Medicine Physician who is board certified by the ABIM in Pulmonary and Sleep Medicine.

Pulmonary medicine focuses on the diagnosis and treatment of diseases of the respiratory system.

Sleep medicine focuses on diagnosis and treatment of sleep disorder and disorders that affect sleep.

Dr. McKenzie dedicates his expertise to the treatment of pulmonary and sleep medicine and works closely with the patients’ primary care provider. It is Dr. McKenzie’s thorough and prompt attention that sets him apart.

The work-up for Pulmonary and sleep medicine is approached holistically.  All aspects of peoples’ needs (psychological,physical, and social) are accounted for in treatment. Education is paramount, not only for the patient but for the patients’ family. Evidence based medicine is Dr. McKenzie’s aim as he strives to gain as much information available for clinical decision making while assessing the risks and benefits of treatment. The prompt and thorough work-up of respiratory problems has enabled Dr. McKenzie to accurately diagnose diseases of the lung including cancer of the lung.

Sleep disorder work-up is essential when dealing with most respiratory problems and vice versa.  Shortness of breath, cough, CHF, insomnia, excessive daytime sleepiness can be a chain of events that when left untreated can cause more problems. Some early symptoms of sleep problems are irritability, drowsiness, weight gain, susceptibility to infections and slower healing times. These can turn into the long-term effects which place a huge burden on your heart by the weight gain and decrease in oxygen, etc.

Chronic Fatigue Syndrome     Sleep Apnea Cures Restful Sleep


PFT Machine
Pulmonary function testing (PFT): measures how well the lungs take in and exhale air and how efficiently they transfer oxygen into the blood. PFTs are performed for diagnostic and disease management as well as pre-operative evaluations and disability evaluation.

Arterial Blood Gas testing (ABG): This test may be ordered for oxygen evaluation and may be a part of the PFT when there is a need for accurate diffusion capacity with correction for Hemoglobin (what transfers oxygen in the bloodstream).

Home sleep study testing: With new innovative testing availability, it is now an affordable alternative to laboratory sleep testing. Although it does not offer titration study, there may be an option to have a machine that auto titrates. However, it is important a doctor who is board certified in Sleep Medicine to monitor the patients’ compliance report. Clinical evaluation for qualification should also be done by a board certified physician. Some people may have risks and would benefit most from a laboratory setting.

Sleep Clinic: Evaluation and management of sleep disorders. Referrals to a laboratory for sleep testing is available if necessary. Dr. McKenzie will read the study results and interpret. The results can be discussed in clinic with a thorough and continuous evaluation of sleep problems.

Branch office serving the Bonifay, Chipley, and surrounding community: Dr. McKenzie, Kristy Caldwell, LPN, and one of the receptionists drive to Bonifay to see patients once each month.

Doctors Memorial Hospital Medical Office Building
2600 Hospital Drive
Bonifay, Florida 32425
Call: (850) 547-8117 for an appointment

Dr. William Tony McKenzie from Dothan, Alabama
Undergraduate study: University of Alabama at Birmingham.

Medical Study: (July, 1996- May, 2000) University of South Alabama College of Medicine in Mobile. He interned (July, 2000- July 2001) there in Internal Medicine and also served his Residency (July, 2001- July, 2003) there where he was also a Clinical Instructor in the Department of Internal Medicine.  His Fellowship (July, 2003- June, 2005) in Pulmonary Medicine along with study in Sleep Medicine was an extra two years of training at the University of South Alabama.

Highest in-training exam, Internal Medicine 2002
Highest in-training exam, Internal Medicine 2003
Best Resident, 2004

Trimm R,Hamm C, McKenzie WT, Hoff D.The role of neonatal thyroxine in neurodevelopmental disorders. Journal of Investigative Medicine. 1997;45:38-A(Feb)

Internal Medicine board certified
(08/19/2003 – 12/31/2013)

Pulmonary Disease board certified
(11/15/2005 – 12/31/2015)

Sleep Medicine board certified
(11/19/2009 – 12/31/2019)

(2003- 2005) Tuberculosis Clinic
(2003- 2005) Cystic Fibrosis Clinic
(2003- 2005) Sleep Lab

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Patient Information Forms
Please Click Here to open the attached .pdf forms. Complete, print and bring them with you to your Scheduled appointment you so we may expedite your visit.




"The following are additional resources to help you learn more about lung and sleep health."

Pulmonary Disorders: 
Acute Respiratory Distress Syndrome
Allergic Rhinitis
Alpha-1 Antitrypsin-deficiency
Lung Cancer
Non-Small Cell Lung Cancer
Occupational lung Disease
Pulmonary Hypertension

(Dr. McKenzie treats many more diseases
of the Respiratory System)

Symptoms suggestive of underlying diseases:
Hemoptysis  (expectoration of blood)
Shortness of Breath
Hypoxemia  (low oxygen saturation)
Chronic  Cough

Pulmonary Screening Tools:
ABG (Arterial Blood Gas)

Sleep Disorder Treatments: (not including all Medical or Pharmacologic)
Sleep Hygiene
Cognitive Behavioral Therapy

Diagnostic Imaging

Methacholine Study
Pulmonary Function Test

Smoking Cessation

Sleep Disorder Screening Tools:
Sleep Studies

Sleep Disorders:
Central Sleep Apnea
Circadian Rhythm disorder
Hypersomnia due to Medical Condition
REM Behavior Disorder
Restless Leg Syndrome
Shiftwork Sleep Disorder
Sleep Apnea

CPAP (Continuous Positive Airway Pressure)
BiPAP (An Inspiratory Pressure and an Expiratory Pressure provided)
Auto SV (treats Central Apnea, Obstructive Apnea, and Periodic Breathing)
Oxygen Therapy