Division of Sleep Medicine

Sleep Division

The Division of Sleep Medicine at Massachusetts General Hospital provides sophisticated diagnostic testing and comprehensive treatment options for people struggling with any kind of sleep problem.

Division of Sleep Medicine: 617-724-7426

About this Program

Each member of our MGH sleep division group cares for patients over the full spectrum of sleep disorders. It is the mission of our sleep laboratory to provide the highest level of diagnostic and therapeutic services for sleep apnea, insomnia, and other sleep disorders. Our active ambulatory clinic provides consultation and chronic care for patients with a spectrum of sleep disorders. The division also hosts cutting edge clinical research in several areas including: sleep apnea, insomnia, restless leg syndrome, and beyond.

Patients seeking our services suffer from a variety of sleep disorders including:

  • Sleep apnea
  • Insomnia
  • Narcolepsy
  • Parasomnia (e.g. acting out dreams)
  • Restless legs syndrome
  • Circadian disorders

Patients who suspect they might have a sleep disorder should speak with their primary care physician, who might want to order a sleep study (see below) and/or a consultation from our staff of sleep experts.

The Division of Sleep Medicine's sleep laboratory features an eight-bed diagnostic center for testing outpatients. For comfort and convenience, it is located at the Wyndham Hotel, immediately next to Mass General. As we tell our patients, coming to the sleep lab is similar to checking in to a hotel.
This state-of-the-art facility allows us to safely and efficiently administer overnight testing in the form of sleep study called a polysomnogram. We also perform daytime testing, including the multiple sleep latency test, or MSLT, as well as mask fitting and desensitization clinic. All of our facilities are wheelchair-accessible.  We can accommodate children age 13 and above for overnight testing.

Our division conducts research  that produce significant breakthroughs in diagnosing and treating patients. For information about ongoing studies and the ability to participate, visit our website:



Referrals are accepted from primary care physicians and specialists by calling 617-724-7426.

We require a completed Sleep Study Requisition form which can be downloaded as a PDF. Please print, complete and fax to 617-724-6513.

For referring MDs, we require the following to be submitted with the requisition:

  • Recent clinic note, typed (please note: handwritten records are not accepted)
  • All prior sleep study reports (including home sleep tests)
  • CPAP compliance report, if applicable
  • Epworth Sleepiness Scale (ESS)


Our Doctors

  • Adusumilli, Josna, MD


    Accepting New Patients

    Board Certifications
    • Neurology, American Board of Psychiatry and Neurology
    • Sleep Medicine, American Board of Psychiatry and Neurology
    • Boston: Neurology Associates
  • Mojica, James E., MD


    Accepting New Patients

    Clinical Interests
    • Pulmonary disorders
    • Sleep Disorders Medicine
    • Critical Care Medicine
    • COPD
    Board Certifications
    • Critical Care Medicine, American Board of Internal Medicine
    • Pulmonary Disease, American Board of Internal Medicine
    • Sleep Medicine, American Board of Internal Medicine
    • Boston: Pulmonary and Critical Care
    • Cambridge: Spaulding Rehabilitation-Cambridge
  • Sassower, Kenneth Clayton, MD


    Accepting New Patients

    Clinical Interests
    • Epilepsy
    • Pediatric Neurology
    • Sleep Disorders Medicine
    • Sleep/Breathing Disorders
    • Neurology
    Board Certifications
    • Neurology with Special Qualifications in Child Neurology, American Board of Psychiatry and Neurology
    • Sleep Medicine, American Board of Psychiatry and Neurology
    • Epilepsy, American Board of Psychiatry and Neurology
    • Boston: Neurology Associates
    • Boston: Pediatric Sleep Lab
  • Videnovic, Aleksandar, MD


    Accepting New Patients

    Clinical Interests
    • Movement disorders
    • Parkinson's disease
    • Tremor
    • Dystonia
    • Chorea
    • Ataxia
    • REM sleep behavior disorder (RBD)
    • Sleep problems in movement disorders
    Board Certifications
    • Neurology, American Board of Psychiatry and Neurology
    • Sleep Medicine, American Board of Internal Medicine
    • Boston: Neurology Associates
  • Winkelman, John Weyl, MD, PhD


    Accepting New Patients

    Clinical Interests
    • Restless legs syndrome
    • Insomnia
    • Sleep Apnea
    • Sleep related eating disorder
    • Parasomnias
    Board Certifications
    • Psychiatry, American Board of Psychiatry and Neurology
    • Sleep Medicine, American Board of Psychiatry and Neurology
    • Boston: Sleep Disorders Clinical Research Program
    • Boston: Neurology Associates

Conditions & Diseases

  • Restless Legs Syndrome (RLS)

    Restless legs syndrome (RLS) is a sleep disorder in which a person experiences unpleasant sensations in the legs.

  • Sleep Apnea

    Sleep apnea is a serious breathing disorder that causes brief interruptions of breathing during sleep.

  • Snoring

    Snoring is the sound that occurs during sleep when flow of air is obstructed in the area where the tongue and upper throat meet the soft palate and uvula.

For Providers

Prior Authorization for Sleep Lab Testing

Massachusetts General Hospital Sleep Lab Now Offers Prior Authorization Support for Sleep Studies. We are pleased to announce that we are now able to help physicians obtain prior authorization for in-lab clinical sleep studies at the Mass General (Wyndham) sleep laboratory.

How it Works

Participation is simple: just order the polysomnography (PSG) in Epic, and we’ll use your clinic notes to perform the Prior Authorization service. The more information you place in your clinic note, the more likely we are to get the PSG approved without needing you to perform a peer-to-peer call.

What happens after you order the test

  1. The Mass General Sleep Lab will work directly with your patient to schedule their PSG.
  2. Scheduling triggers our staff to apply for prior authorization if the patient’s insurance requires one.
  3. If our request is denied (or if it approved for home sleep testing instead) our Finance Coordinator, Oana Verman, will reach out to you. At that point, you can either decide to pursue home sleep apnea testing (HSAT) or you can pursue a peer-to-peer phone call to appeal. If you already know you want to appeal if PSG is denied (or that you would allow HSAT), you can indicate that at the time of Epic ordering (in free text).

FAQs - Home Sleep Test Information for Providers

  • What is Home Sleep Apnea Testing?
  • What Sleep Disorders are Detected by HSAT Kits?
  • What Are the Advantages of HSAT Kits?
  • What Are the Limitations of HSAT Kits?
  • What does the American Academy of Sleep Medicine Advise?

Clinical Trials


  • What does it mean to be 'sleepy'? - 4/14/2017, Mass General

    With National Sleep Awareness Week quickly approaching April 23-29, Kenneth Sassower, MD, neurologist in the Sleep Disorders Unit, answers the most commonly asked questions about sleep, and shares his most important piece of advice.

  • Neurology Department honors John Stakes, MD - 12/9/2016, Mass General

    The MGH Neurology Department has its very own Wizard of Oz. That wizard’s real name is John Stakes, MD, co-founder of the MGH Sleep Division and the Sleep Lab.

  • Sleep: Are You Getting Enough? - 5/18/2016, Mass General

    People may underestimate the amount of sleep they need, Dr. Adusumilli says. A study of adults between the ages of 21 and 38 found that getting six hours of sleep a night for two weeks had the same negative effect on brain function as staying awake for 1 to 2 days straight. But even as brain performance worsened, study participants were unaware of the decline.

  • Springing forward on the right foot - 3/4/2016, Mass General

    In honor of National Sleep Awareness Week, Matt Bianchi, MD, PhD, chief of Sleep Medicine at the MGH, provides tips for maintaining good sleep and beating the clock just in time for daylight saving time, which begins March 13.

  • The Division of Sleep Medicine Receives Program Accreditation - 2/27/2015, Mass General

    The Division of Sleep Medicine at Massachusetts General Hospital in Boston recently received program accreditation from the American Academy of Sleep Medicine (AASM).

  • New year, better sleep - 1/16/2015, Mass General

    Better sleep is a resolution that should be on everyone’s list, according to Josna Adusumilli, MD, an MGH neurologist and sleep specialist. But when it comes to sleep, how much is enough and what is the best way to get restful sleep? Adusumilli explains.

  • Sleep Research: Do Try This At Home - 11/18/2014, Clinical

    About 10 percent of Americans suffer from sleep apnea, a disorder of nighttime breathing that disrupts sleep but often goes undiagnosed. Apnea can lead to daytime drowsiness, which puts people at risk of accidents and injuries. Poor sleep due to apnea or other causes also raises the chances of developing high blood pressure, diabetes, depression, heart disease and stroke.


Contact Us

Division of Sleep Medicine, Department of Neurology

Wang Ambulatory Care Center

15 Parkman Street, Wang ACC 720Division of Sleep Medicine, Neurology Boston, MA 02114
  • Near Public Transit
  • Accessible
  • Phone: 617-724-7426
  • Fax: 617-724-6513

Adult Overnight Outpatient Testing Unit 

Massachusetts General Hospital
Division of Sleep Medicine, Department of Neurology
Wyndham Hotel
5 Blossom Street
Boston, MA 02114

Patient Frequently Asked Questions 

Download FAQ PDF

Q: What is your office contact information?
A: Phone: 617-724-7426
Fax: 617-724-6513

Q: Where is the clinic location?
A: Our clinics are at the following locations:
Wang Building, Floor 8, Suite 835
Wang Building, Floor 7, Suite 720
Wyndham Hotel 2nd Floor, 5 Blossom St. Boston MA 02114

Q: What is your mailing address?
A: Attn: Sleep Unit
Wang 720
55 Fruit Street
Boston, MA 02114

Q: What is required in order to schedule a new patient appointment?
A: Most recent office visit note from your referring doctor explaining why the patient needs to be seen and if it is for a consult for Sleep Study. (If for Sleep Study what kind: Diagnostic, Split or Titration Study).
We need copies of any prior Sleep Studies

Q: What is my doctor’s NPI number for an insurance referral?
Dr. John Stakes: 1871570325
Dr. Kenneth Sassower: 1619968179
Dr. John Winkelman: 1619950045
Dr. Josna Adusumilli: 15686633789
Dr. Deirdre O’rourke: 1194092858

Q: How can I obtain a copy of my medical records from the Sleep Unit?
A: You will need to complete the MGH Release of Information form and either fax or mail it back to our office. The release form can be found here.

Q: Where do I have my PCP fax my insurance referral to?
A: Referrals Office fax: 781-960-1265

Q: How do I know if my insurance will cover my visit?
A: Please call your insurance company to verify that your appointment or test will be covered. You can also contact our Financial Access Unit at 617-726-6828.

Q: How do I update my demographic and insurance information?
A: Please contact our Registration and Referrals Center at 866-211-6588

Q: How long will it take for me to receive my test results and how will they be communicated to me?
A: For Sleep Study results it will take 2-3 weeks for the results to be ready.  Once they are ready they are sent to the patients referring doctor and they will need to contact the patient to review.

Division of Sleep Medicine: 617-724-7426

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