About
Dr. Catherine Boily-Daoust is a Respirologist / Pulmonologist. Practicing at Hôpital Maisonneuve-Rosemont in Montréal, QC, Dr. Boily-Daoust is committed to delivering expert, patient-focused care in Respirology. Dr. Boily-Daoust is licensed by The Collège des médecins du Québec (CMQ) and upholds the highest professional and ethical standards of medical practice in QC. As a certified specialist in Respirology (also known as Pulmonology), Dr. Boily-Daoust focuses on the diagnosis, treatment, and management of diseases and conditions affecting the lungs and respiratory system. The goal is to improve respiratory health, alleviate symptoms, and enhance the quality of life for patients with breathing disorders. Dr. Boily-Daoust serves patients with a variety of respiratory conditions.
Dr. Catherine Boily-Daoust earned a Medical Degree in 2020. Following this, Dr. Boily-Daoust completed specialty training and achieved certification in Respirology from the Royal College of Physicians and Surgeons of Canada (or equivalent recognized body). With over 5 years of specialized practice since 2020, Dr. Boily-Daoust's expertise encompasses Specialty Practice in Respirology (Pulmonology). Dr. Boily-Daoust is dedicated to ongoing professional development and staying current with the latest advancements in respiratory medicine to provide optimal patient care.
Key aspects of Dr. Boily-Daoust's medical practice philosophy include: a holistic view of respiratory health, considering all factors that impact breathing and well-being; a commitment to evidence-based medicine and utilizing the latest advancements in respiratory care. Dr. Boily-Daoust offers consultations in French.

As a Pneumologue (Respirologue), Dr. Catherine Boily-Daoust diagnoses and manages a wide array of conditions affecting the lungs and respiratory system, including but not limited to:
Interstitial Lung Diseases Ild
- Idiopathic Pulmonary Fibrosis (IPF): Diagnosing and managing this chronic, progressive lung disease characterized by scarring (fibrosis) of the lungs with no known cause.
- Sarcoidosis (Pulmonary Manifestations): Treating respiratory symptoms such as cough, shortness of breath, and chest pain related to pulmonary sarcoidosis.
- Hypersensitivity Pneumonitis: Diagnosing and treating lung inflammation caused by an allergic reaction to inhaled organic dusts, molds, or chemicals.
Pleural Diseases
- Pleurisy (Pleuritis): Treating inflammation of the pleura (the tissues lining the lungs and chest cavity), which causes sharp chest pain, especially during breathing.
- Pneumothorax (Collapsed Lung - Follow-up Care): Providing follow-up care and management after a pneumothorax (air in the pleural space causing lung collapse) to ensure resolution and prevent recurrence.
Airway Diseases
- Chronic Obstructive Pulmonary Disease (COPD): Treating progressive lung diseases like emphysema and chronic bronchitis that cause airflow blockage and breathing-related problems.
- Asthma: Comprehensive care for reversible airway obstruction characterized by wheezing, coughing, and shortness of breath.
This list provides examples of conditions commonly managed. A comprehensive diagnosis and treatment plan are always based on an individual assessment by Dr. Boily-Daoust, typically following referral. If your specific concern isn't listed, please discuss with your referring physician or contact the clinic for more information.
- Management of Pneumonia and Lung Infections: Care for acute bronchitis and other infectious conditions affecting the lower respiratory tract.
- COPD Management and Education: Multifaceted approach to managing Chronic Obstructive Pulmonary Disease (COPD), including emphysema and chronic bronchitis, focusing on symptom relief, smoking cessation, and pulmonary rehabilitation.
- Comprehensive Respiratory Evaluation: Thorough assessment of respiratory health, including detailed medical history, physical examination, and review of previous tests and imaging.
- Pulmonary Rehabilitation Program Referral: Advocating for participation in structured exercise and education programs tailored for individuals with respiratory conditions.
- Diagnostic Bronchoscopy: A minimally invasive procedure to examine the inside of the lungs' airways for diagnostic purposes.
Note: This list highlights some of the key services offered by Dr. Boily-Daoust. Not all services may be listed, and the suitability of any test or treatment depends on individual assessment and referral. For a comprehensive understanding or to discuss your specific medical needs, please schedule a consultation or speak with your referring physician.
All services by Dr. Catherine Boily-Daoust adhere to the scope of practice for Pneumologue (Respirologue)s in QC and the standards of The Collège des médecins du Québec (CMQ).
At Hôpital Maisonneuve-Rosemont, the primary aim is to work collaboratively with you to manage your respiratory condition effectively, improve your breathing, and enhance your overall quality of life. Dr. Boily-Daoust frequently helps patients work towards outcomes such as:
- It's always a professional highlight for Dr. Boily-Daoust to see patients who were troubled by feeling anxious about their breathing problems and how it affects their life successfully achieve slowed progression of their chronic lung disease where possible. This directly translates to their ability to return to and enjoy important activities like reducing their reliance on rescue inhalers due to better baseline control.
- Dr. Boily-Daoust understands that dealing with pain in their chest, especially when they take a deep breath or cough can be challenging. That's why her treatment plans are geared towards achieving improved sleep quality and feeling more rested and energetic during the day (especially for sleep apnea), helping patients comfortably get back to traveling by car or plane with greater comfort and feeling their best.
- Patients frequently come to Dr. Boily-Daoust with concerns about trouble catching their breath after a recent illness like COVID-19. By working together as a team, they typically aim for and achieve quitting smoking and improving their overall lung health outlook, making a positive and lasting return to feeling less anxious about sudden shortness of breath not just possible, but highly feasible.
- Numerous patients have successfully addressed their asthma not being well-controlled, with frequent attacks or need for their rescue inhaler with Dr. Boily-Daoust's dedicated support and clinical expertise. This often leads directly to better understanding of how to use their inhalers and medications correctly and the restored ability to fully participate in and enjoy carrying light loads without feeling severely winded once more.
Your personalized treatment plan, developed in consultation with Dr. Boily-Daoust, will be tailored to address your specific respiratory needs and health goals. Dr. Boily-Daoust is dedicated to providing expert care and empowering patients with the knowledge and tools to achieve their best possible respiratory health.
Dr. Boily-Daoust practices at Hôpital Maisonneuve-Rosemont, centrally located in the Montréal neighborhood of Montréal. The clinic is conveniently located near local healthcare facilities and community services and is accessible via major local public transit routes. Patient parking is typically available nearby or on-site.
- Are services provided by a Respirologist like Dr. Boily-Daoust covered by provincial health insurance (e.g., Régie de l'assurance maladie du Québec (RAMQ))?
- Most physician consultations and medically necessary assessments by a registered specialist Respirologist like Dr. Boily-Daoust are typically covered by provincial health plans such as Régie de l'assurance maladie du Québec (RAMQ) in QC, provided the patient has a valid health card and appropriate referral. Diagnostic tests like PFTs and bronchoscopies ordered by a specialist are also usually covered. However, some specific treatments, devices (e.g., CPAP machines, some specialized inhalers), or medications may not be fully covered or may have co-payments depending on provincial formularies and private insurance. It's always best for patients to inquire with Hôpital Maisonneuve-Rosemont about any potential out-of-pocket costs and to check with their private insurance, if any.
- What can I expect at my first appointment with Dr. Boily-Daoust at Hôpital Maisonneuve-Rosemont?
- The first visit with Dr. Boily-Daoust will typically involve a comprehensive respiratory assessment. This includes a detailed discussion of the patient's medical history, the nature and timeline of their current respiratory symptoms (e.g., cough, shortness of breath, wheezing), how these symptoms impact their daily activities, smoking history, environmental exposures, and any previous treatments. Dr. Boily-Daoust will then perform a thorough physical examination, focusing on the respiratory system (listening to the lungs, observing breathing patterns). Any prior imaging (Chest X-rays, CT scans) or test results (like PFTs) will be reviewed. Based on this evaluation, Dr. Boily-Daoust will discuss their diagnostic impressions, may recommend further investigations (like PFTs, sleep study, or bronchoscopy if needed), and will outline potential treatment options, working with the patient to establish health goals.
- What does a Respirologist / Pulmonologist like Dr. Boily-Daoust do?
- A Respirologist (often called a Pulmonologist) like Dr. Boily-Daoust is a medical doctor (physician) who specializes in diagnosing, treating, and managing diseases and conditions of the lungs and respiratory system. This includes conditions like asthma, COPD (emphysema, chronic bronchitis), pneumonia, lung cancer, sleep apnea, interstitial lung diseases, and pleural diseases. Their goal is to improve respiratory health, alleviate symptoms like shortness of breath and cough, and enhance the quality of life for people with breathing problems. They use various diagnostic tools like pulmonary function tests and bronchoscopy, and treatments including medications, inhalers, oxygen therapy, and management of devices like CPAP machines.
- What are Pulmonary Function Tests (PFTs), and why might Dr. Boily-Daoust recommend them?
- Pulmonary Function Tests (PFTs) are a group of non-invasive breathing tests that measure how well the lungs are working. They assess lung volume (how much air the lungs can hold), airflow rates (how quickly air can be moved in and out), and gas exchange (how well oxygen moves from the lungs into the blood). Dr. Boily-Daoust might recommend PFTs to help diagnose conditions like asthma, COPD, pulmonary fibrosis, or to assess the severity of a known lung disease, monitor its progression, or evaluate the effectiveness of treatment. Common PFTs include spirometry, lung volume measurement, and diffusing capacity tests.
- Can Dr. Boily-Daoust help manage chronic conditions like asthma or COPD?
- Yes, Respirologists like Dr. Boily-Daoust are experts in the long-term management of chronic respiratory conditions such as asthma and COPD (Chronic Obstructive Pulmonary Disease, which includes emphysema and chronic bronchitis). After a thorough assessment, Dr. Boily-Daoust develops a personalized management plan. This may include prescribing appropriate inhaler medications (relievers and controllers), educating patients on correct inhaler technique, developing action plans for flare-ups, advising on trigger avoidance, recommending smoking cessation programs, and coordinating pulmonary rehabilitation if beneficial. The goal is to optimize symptom control, reduce exacerbations, improve lung function, and enhance overall quality of life.
Hôpital Maisonneuve-Rosemont
5415 boul de l'Assomption
Montréal, QC, H1T 2M4
Phone: (514) 252-3400
Dr. Catherine Boily-Daoust is a licensed Pneumologue (Respirologue) in QC, regulated by The Collège des médecins du Québec (CMQ) under the Code des professions & Loi médicale (Québec).
License Number: 20099
Verify registration with The Collège des médecins du Québec (CMQ): https://www.cmq.org/en/directory/physicians?number=20099
A referral from a family physician or another specialist is typically required to see Dr. Boily-Daoust. Dr. Boily-Daoust and the team are dedicated to providing comprehensive respiratory care. If you are experiencing a medical emergency or severe difficulty breathing, please proceed to the nearest hospital emergency department or call 911.