Sleep Center at Comprehensive Helps You Sleep Better.

Sleep Center at Comprehensive is a full-service sleep disorders center in Nevada. We have four Board Certified Sleep Medicine physicians on staff as well as a highly trained team of technicians to evaluate, diagnose and treat patients with sleep disorders. We provide compassionate care, focusing on the needs and concerns of the patient to provide the highest quality of service. We are the only sleep center in Nevada to continually adjust patient’s CPAP machines to ensure their treatment remains comfortable and effective.

  • Sleep disorders
  • Shift Work Disorder
  • Restless Leg Syndrome (RLS)
  • Insomnia
  • Nocturnal seizures
  • Sleep Apnea
  • Behavioral Sleep Medicine
  • CPAP Management and Adjustment
  • Dental Sleep Medicine
  • Diagnostic Testing
  • Pulse Oximetry
  • Sleep Study

Sleep Disorders

Learn about sleep disorders and how we treat them.

Services

Learn about everything else we can do to help.

Our Team

Meet our experienced team of physicians and providers.

Get Started

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Our Team of Doctors.

Sapna Bhatia, MD

Sapna Bhatia, MD

Pulmonologist

Dr. Bhatia treats patients with lung disease and sleep disorders including asthma, emphysema, chronic bronchitis, chronic cough, nicotine dependence, snoring, insomnia and obstructive sleep apnea.

James S. J. Hsu, MD, FCCP, DABSM

Pulmonologist

Dr. Hsu treats patients with lung disease and sleep disorders including asthma, emphysema, chronic bronchitis, chronic cough, nicotine dependence, snoring, insomnia and obstructive sleep apnea.

Nisarg Changawala, MD, MPH

Nisarg Changawala, MD, MPH

Pulmonologist

Dr. Changawala treats patients with lung disease and sleep disorders including asthma, emphysema, chronic bronchitis, chronic cough, nicotine dependence, snoring, insomnia and sleep apnea

Ralph M. Nietrzeba, MD, FCCP, FACP

Ralph Nietrzeba, MD, FCCP, FACP

Pulmonologist

Dr. Nietrzeba treats patients with lung disease and sleep disorders including asthma, emphysema, chronic bronchitis, chronic cough, nicotine dependence, snoring and obstructive sleep apnea.

John Wojcik, MD, FCCP, DABSM

John J. Wojcik, MD, FCCP, DABSM

Pulmonologist

Dr. Wojcik is board certified in Pulmonary Medicine and Sleep Medicine. He is a Fellow of the College of Chest Physicians. He has been in practice since 1997.

John (Jack) Collier, MD, FCCP, DABSM

John (Jack) Collier, MD, FCCP, DABS

Pulmonologist

Dr. Collier treats patients with lung disease and sleep disorders including asthma, emphysema, chronic bronchitis, chronic cough, nicotine dependence, snoring, insomnia and obstructive sleep apnea

George S. Tu, MD, FCCP, DABSM

George Tu, MD, FCCP, DABSM

Pulmonologist

Dr. Tu treats patients with lung disease and sleep disorders including asthma, emphysema, chronic bronchitis, chronic cough, nicotine dependence, snoring, insomnia and obstructive sleep apnea.

Let's see how we can help.