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Mary Washington Sleep Medicine

Mary Washington Sleep Medicine

With the rise of COVID-19 cases in our region, Mary Washington Medical Group offices are limiting waiting room access for your health and safety. If you or your child has an appointment, please call the office from your car before entering the building. Only one support person or parent may accompany the patient inside. Please note that patients and visitors are required by law to wear masks in all healthcare facilities, regardless of vaccination status.

Philips CPAP/BiPAP Recall (updated August 27)

  • Location

    1101 Sam Perry Blvd.
    Suite 411
    Fredericksburg, Virginia 22401

    Get directions

    P: 540.741.7846
    F: 540.741.1632
  • Hours

    Monday–Thursday: 8:00 a.m.–4:30 p.m.
    Friday: 8:00 a.m.–2:00 p.m.


    Please call 540.741.7846 to schedule an appointment. Click or tap the virtual visits button to learn more about telephone and video visits.

    Virtual Visits

Are you looking for the Sleep and Wake Disorders Center (sleep lab)?
Click here for more.

Your most healthy, happy, and fulfilling life begins with a great night’s sleep.

Could any of these statements apply to you?

  • I usually wake up tired because I toss and turn most nights.
  • I have trouble falling asleep, then wish I could sleep all day.
  • I often fall asleep before bedtime, while reading or watching TV.
  • I work a night shift and have trouble sleeping during the day.
  • My snoring keeps my partner or spouse awake.
  • My dentist says I grind my teeth.
  • I have trouble staying awake at work.
  • I wish I could take more naps.
  • I’ve caught myself nodding off while driving.

If you answered “yes” to one or more, you may have a sleep disorder. We’re here to help you get the rest you need. We want you to regain your vitality and live the long and healthy life you deserve.

Our Physicians

  • Neal K. Maru, MD

    Dr. Maru is a board-certified sleep specialist with expertise in evaluating and managing all sleep disorders, including excessive snoring, sleep apnea, insomnia, narcolepsy and other hypersomnias, parasomnias, sleep related movement disorders, restless leg syndrome, and circadian rhythm disorders. Dr. Maru provides both clinical assessment and recommendation of appropriate testing and treatment methodologies, as well as appropriate follow-up. He is a member of the American Academy of Sleep Medicine and the American Academy of Neurology.

    Education and Experience

  • Pascal Ngongmon, MD

    Dr. Ngongmon specializes in sleep medicine, diagnosing and treating a number of sleep-related conditions, including excessive snoring, sleep apnea, insomnia, narcolepsy, and circadian rhythm disorders. Dr. Ngongmon is certified by the American Board of Internal Medicine and provides both clinical assessment and recommendation of appropriate treatment methodologies.

    Education and Experience

Good Sleep is Your Basic Right

Every human being needs food, clothing, shelter — and good sleep. But if you’re like most people, your life is hectic. It’s easy to say…

“I can’t afford the luxury of a full night’s sleep every night. I try to catch up by sleeping late on weekends.”

But sleep doesn’t work that way. Quality sleep every night helps you wake up every day ready to face your work and family responsibilities with high energy, a sense of well-being, and less stress.

It’s a win-win—and it’s a victory for you.

You Are Not Alone

Sleep disorders are more common than you might think.

Among adults and children, 25-30% have problems sleeping that can lead to injury, disability, chronic illness, and worse.

You’ve probably heard of “sleep apnea.” It’s a breathing disorder that causes snoring and frequent sleep interruptions. More than 15% of the population has some form of apnea. It’s a leading cause of daytime sleepiness, high blood pressure, and mental impairment. Left untreated, it increases your risk for heart attack, stroke, atrial fibrillation, diabetes, congestive heart failure, and death.

Drowsy driving is a result of sleep deprivation that often makes tragic headlines. Drivers who fall asleep at the wheel cause more than 100,000 accidents a year.

But these problems don’t have to exist.

Sleep disorders can be effectively managed — or cured — with proper diagnosis and treatment.

Let Us Help You

At Sleep Medicine you’ll meet our experienced, board-certified physicians who know how to efficiently diagnose and treat the full range of sleep disorders.

Our staff is trained to provide discreet, compassionate care and ensure that your experience is comfortable.

Our testing facilities are clean, casual, and make you feel right at home so your sleep studies will go smoothly.

If you have a chronic sleep condition, we’ll help you manage it long-term through regular follow-up. We’ll work with your primary care physician, cardiologist, neuropsychologist, ENT, dentist, specialists, and other related healthcare providers to coordinate your comprehensive action plan.

We want to help you get the sleep you need so you can live your life to its fullest.

Conditions Treated

  • Sleep Apnea
  • Sleepiness and Fatigue
  • Insomnia
  • Narcolepsy
  • Restless Leg Syndrome
  • Sleep Walking
  • Bruxism (Teeth Grinding)

Procedures and Diagnostics

  • Polysomnogram (sleep study)
  • CPAP / Bilevel PAP / ASV (positive airway pressure)
  • MSLT (mean sleep latency test)
  • MWT (mean wakefulness test)
  • HST (Home Sleep Study)
  • Actigraphy

We partner with Mary Washington Healthcare Sleep and Wake Disorder Centers with approval from your insurance carrier.

Awards & Recognitions

What Can We Help You Find?