Our Services

Sleep Disorders


Approximately 42 million Americans have Sleep Apnea – as prevalent as diabetes and asthma combined. 25% of middle aged men and 9% of middle aged women suffer from Obstructive Sleep Apnea (OSA). The disorder takes its name from the Greek word “Apne” which means without breath. People with OSA frequently stop breathing repeatedly during their sleep.

Untreated OSA can result in

    • Hypertension
    • Cardiovascular diseases, arrhythmias, heart attack, and heart failure
    • Strokes
    • Type II Diabetes
    • Mood disorders (anxiety and/or depression)
    • Increased morbidity and mortality
    • Obesity

Dr. Karupaiah is Board certified and specialized  in the diagnosis and treatment of Sleep Disorders.

To diagnose the condition, we offer a highly specialized test called a Nocturnal Polysomnogram which evaluates a patient’s sleep patterns, respiratory events, and cardiac rhythms during an overnight stay at our office supervised by registered sleep technologists in our on-site Sleep Lab. Insomnia, excessive daytime sleepiness, narcolepsy and restless leg syndrome are common disorders which we also diagnose and treat.

After a diagnosis of obstructive sleep apnea, the patient is scheduled for a CPAP titration study. CPAP therapy begins by identifying the appropriate pressure for your CPAP. It also provides the opportunity to try different CPAP masks. At the culmination of the CPAP titration study, the ideal pressure and mask settings can be determined.

We also provide Home sleep study testing to diagnose Obstructive sleep apnea. Detailed instructions will be provided to the patient at the office regarding the proper way to use the equipment at home.


Internal Medicine


Internal Medicine is the branch and specialty of medicine concerning the diagnosis and non-surgical treatment of diseases in adults. Internists are sometimes referred to as the “doctor’s doctor” because they are often called upon to act as consultants to other physicians to help solve puzzling diagnostic problems. Doctors of internal medicine treat the whole person.

Other services provided at our office

    • EKG recording to check heart rhythm
    • Spirometry testing for diagnosis of asthma and other lung conditions
    • Ear lavage for impacted ear wax
    • Protime testing for patients on Coumadin

We are accepting new patients for primary care and sleep disorders.



San Jose Sleep Doctor

Sudha Karupaiah received her MD degree from Bangalore Medical College in Bangalore, India. She completed her Internal Medicine residency at Harlem Hospital through Columbia University in New York.

She is board certified in Sleep Disorders. Dr. Karupaiah is also Board Certified in Internal Medicine with special interests in women’s health and geriatrics.

Contact Us

  • Phone
    (408) 279-1400
  • Address
    560 East St. John Street
    San Jose, CA 95112

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