Somnology Home Sleep Testing
Somnology HSAT: Home Sleep Apnea Testing
Somnology’s clinical arm, Redwood Pulmonary Medical Associates, has provided specialized sleep care to patients for over 25 years.
Using our accredited service, physicians can order home sleep tests (HSTs) for their patients directly.

How Our Program Works
Refer Patients
Refer patients suspected of having sleep disorders by filling out the forms here.
Order Test
Order a take home test for patients to monitor their sleep.
Receive Results
Promptly receive comprehensive sleep test results.
Follow Up
Patients follow up with referring physicians or Somnology’s medical team.
Treatment Insights
Portable Testing
Patients are monitored remotely using convenient take home tests.
Rapid Turnaround
We provide rapid turnaround times for scheduling and completed studies.
Quality Care
Our patients can expect prompt, courteous service from all of our staff.
Medically Reviewed
Dr. Melissa S. Lim, M.D., FAASM, FCCP., is the founder and director of Redwood Pulmonary Medical Associates and Co-Founder and Chief Medical Officer of Somnology. She is board-certified in internal medicine, pulmonary diseases, and sleep medicine.
About Sleep Apnea
Obstructive Sleep Apnea (OSA) occurs when the upper airway repeatedly collapses during sleep. This airway collapse can lead to poor sleep quality, excess adrenaline surges, low oxygen levels at night, and many other problems including high blood pressure and heart disease.

Sleep Monitoring Devices
These take-home sleep monitors are used to assess patients for potential sleep disorders.

Somnology SomnoRing®
Somnology’s medical grade sleep monitor with sensors for motion, pulse oximetry, and heart rate.
Learn more about SomnoRing® →

SleepView®
Sleep monitor with 8 testing channels including motion, body position, pulse oximetry, heart rate, and snoring. Somnology orders a sleep test that is sent to the patient’s home.
Physician Information
To refer a patient to our HSAT program, please download and fill out the forms below (Epworth Scale questionnaire, STOP BANG questionnaire, and HST order form).
The completed copies can be sent to us via fax or email.
Fax: (650) 729-0107
Email: The Somnology HSAT Director

Patient Information
Do you have difficulties falling asleep or staying awake? Daytime sleepiness, breathing interruptions at night, snoring, and gasping episodes may indicate Obstructive Sleep Apnea.
To be referred to our HSAT program, please speak with your physician or request a consultation with the Somnology medical team using the form below.
Download our flyer for more patient-specific information.
Contact Our HSAT Director
For further inquiries, send a message and we will be in touch as soon as possible.