Office Hours

  • My office staff is available for phone calls Mon - Thurs 9-5 and Fri 9 -4.  The office is closed between 12 noon and 1pm for lunch.  You can reach my office at 440-953-9135.  Routine office appointments are scheduled as follows: (subject to change)
    Monday: 2:00pm - 5:30pm
    Tuesday: 2:00pm - 4:30pm
    Wednesday: 8:00am - 12noon
    Thursday: 8:00am - 12noon
  • Dr. Kowalski is affiliated with Lake Health


If you need to reach the doctor after hours for emergencies only, please call the office and you will be connected to our answering service which will take your name and number and have the doctor return your call.  Please contact the office during business hours for all routine calls.  Prescription refills ARE NOT AN EMERGENCY.

Northshore Respiratory and Sleep Services

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Welcome to the medical practice of Tim F. Kowalski, M.D., Northshore Respiratory and Sleep Services. I am board certified in Internal Medicine, Pulmonary Medicine, Critical Care Medicine and Sleep Medicine.  My practice is limited to Adult Pulmonary and Sleep Medicine.  My practice involves caring for patients with medical disorders of the lungs in addition to sleep disorders.  Some of the most common diseases are asthma, COPD,  emphysema, chronic bronchitis, bronchiectasis, lung cancer, sarcoidosis, pulmonary hypertension, interstitial lung disease, idiopathic pulmonary fibrosis and disorders of sleep such as sleep apnea and insomnia.

Northshore Respiratory and Sleep Services is a single provider private office.

Dr. Kowalski and his staff is committed to provide compassionate, professional care to his patients with problems of lung disease and sleep disorders.

Patients are seen by appointment only.


Sleep Disorder


Lung Diseases

Smoking Cessation