Dr. Jonathon Lee Maguire – Pediatrician | Toronto, ON

Dr. Jonathon Lee Maguire is a dedicated Pediatrician committed to providing comprehensive and compassionate healthcare for infants, children, and adolescents. Practicing at The Hospital for Sick Children in Toronto, ON, he is an integral part of the local pediatric healthcare community. His practice adheres to the high standards set by the College of Physicians and Surgeons of Ontario (CPSO). He focuses on preventive care, well-child check-ups, immunizations, and the management of common childhood illnesses, promoting healthy growth and development from infancy through adolescence. The clinic environment is designed to be child-friendly and welcoming, ensuring a positive experience for young patients and their families.

Dr. Maguire graduated with a Medical Degree from the University of Toronto in Canada. With over 17 years of experience practicing as a Pediatrician since 2007, he has developed a deep expertise in pediatric health. He is recognized as a RCPSC Specialist by the College of Physicians and Surgeons of Ontario (CPSO), affirming his specialized training and competence in pediatrics.

His clinical philosophy emphasizes family-centered care, evidence-based practice, and preventive health strategies. Dr. Maguire is dedicated to collaborating closely with families, parents, and other healthcare professionals to ensure each child receives personalized, high-quality care. He provides medical services in English and is committed to supporting the health and well-being of young patients across Toronto in a compassionate and professional manner.

Dr. Jonathon Maguire provides care for a wide range of childhood conditions, including:

Common General Pediatric Conditions

• Constipation & Other Common Digestive Issues: Difficulties with bowel movements or other common gastrointestinal complaints in children.
• Allergies (Seasonal, Food, Environmental - initial management): Immune system reactions to various substances, manifesting as rashes, respiratory issues, or digestive problems.
• Asthma (Mild to Moderate): A chronic lung condition causing airway inflammation and narrowing, leading to wheezing and breathing difficulties.

Developmental & Behavioral Conditions

• Attention-Deficit/Hyperactivity Disorder (ADHD): A neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity.
• Global Developmental Delay: Significant delays in two or more areas of development (e.g., motor, language, cognitive).
• Autism Spectrum Disorder (ASD): A complex developmental condition involving challenges with social communication, restricted interests, and repetitive behaviors.

Adolescent Health Concerns

• Eating Disorders (Anorexia Nervosa, Bulimia Nervosa - initial assessment & coordination): Serious conditions related to persistent eating behaviors that negatively impact health, emotions and ability to function.
• Sports Injuries & Concussions: Injuries common in active teenagers, including head injuries requiring careful management.
• Menstrual Disorders (e.g., irregular periods, dysmenorrhea): Irregular, heavy, or painful periods in adolescent girls.

This list provides examples and is not exhaustive. For personalized advice, please discuss your child's specific situation with Dr. Jonathon Maguire.

• Management of Chronic Pediatric Conditions: Ongoing care and coordination for children with long-term health issues like asthma, allergies, eczema, diabetes, and ADHD.
• Parental Guidance & Support: Providing education and support to parents on various aspects of child health, safety, behavior, and development.
• Anticipatory Guidance for Injury Prevention: Educating families on age-specific safety measures to prevent common childhood injuries.
• Lead Exposure Risk Assessment & Screening: Evaluating risk factors for lead exposure and performing screening tests as indicated by guidelines.
• Diagnosis & Management of Acute Childhood Illnesses: Evaluation and treatment for common illnesses such as colds, flu, ear infections, sore throats, rashes, and gastrointestinal issues.
• Mental Health Screening & Initial Support: Basic screening for common pediatric mental health concerns (e.g., anxiety, depression) and providing initial support or referrals as needed.
• Developmental Screening & Surveillance: Assessing developmental milestones (motor, language, social, cognitive) and identifying potential delays for early intervention.

Note: This list provides a general overview of services offered in Pediatrics (Comprehensive care for infants, children, and adolescents). Care plans are highly individualized to meet each child's specific health needs. Please discuss with Dr. Maguire or your healthcare team for details relevant to your child's care.

All medical services are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO) and relevant pediatric care guidelines. Contact the clinic regarding new patient intake and referral processes.

The Hospital for Sick Children, located in Toronto's St. James Town neighborhood, serves as a leading pediatric medical facility in the region. The hospital's pediatric unit is situated within a vibrant medical complex that supports comprehensive child healthcare. The facility is easily accessible via public transit, with TTC (Subway, Streetcar, Bus) options conveniently nearby. The hospital is wheelchair accessible and strives to create a welcoming environment for children and families. Paid parking options are conveniently located for those arriving by car. The setting provides a family-friendly atmosphere, ensuring young patients and their families feel comfortable and cared for during their visits.

Are pediatric services with Dr. Maguire covered by Ontario Health Insurance Plan (OHIP) in ON?

Medically necessary consultations, well-child visits, immunizations, and treatment for illnesses provided by a licensed Pediatrician like Dr. Maguire are generally covered by Ontario Health Insurance Plan (OHIP) in ON. Some specialized tests, procedures, or medications prescribed by a subspecialist may require pre-authorization or might have specific coverage criteria. It's always a good idea to confirm coverage details with Ontario Health Insurance Plan (OHIP) or Dr. Maguire's office, especially for subspecialty care.

Do I need a referral to see Dr. Maguire, a Pediatrician?

For a general Pediatrician, you may be able to book an appointment directly for your child, particularly if Dr. Maguire is accepting new patients or for newborn care. However, if Dr. Maguire is a pediatric subspecialist (e.g., a Pediatric Cardiologist or Developmental Pediatrician), a referral from your child's family doctor or a general pediatrician is usually required for services to be covered by Ontario Health Insurance Plan (OHIP). It's best to check with Dr. Maguire's clinic directly regarding their new patient and referral policies. You may be able to book an appointment directly, especially if the practice is accepting new patients, or for newborn care.

What can I do if my child is having trouble sleeping?

Sleep is crucial for a child's development. If your child is having trouble sleeping, establishing a consistent bedtime routine is very important. This includes a calming wind-down period, a set bedtime, and ensuring their sleep environment is comfortable, dark, and quiet. Limiting screen time before bed can also help. Dr. Maguire can discuss age-appropriate sleep needs, common sleep problems, and strategies to address them. Sometimes, underlying issues like anxiety or medical conditions can affect sleep, which Dr. Maguire can help assess.

What immunizations will my child receive from Dr. Maguire?

Dr. Maguire follows the recommended provincial immunization schedule for ON. This schedule outlines the vaccines your child should receive at different ages to protect them from serious preventable diseases like measles, mumps, rubella, polio, diphtheria, tetanus, pertussis (whooping cough), chickenpox, hepatitis B, influenza, rotavirus, pneumococcal, and meningococcal diseases. He will discuss the specific vaccines due at each visit and answer any questions you may have about them.

The Hospital for Sick Children
6103C Burton Wing, 61 Queen St. East, Dept of Otolaryngology Head & Neck
Toronto, ON M5C 2T2

Phone: (416) 867-3655 | Fax: (416) 867-3736

The facility is wheelchair accessible and aims to be welcoming to children and families.

Dr. Maguire is a licensed Pediatrician regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Regulated Health Professions Act, 1991 and Medicine Act, 1991 in ON. Dr. Maguire may accept new patients directly for general pediatric care or via referral, depending on clinic policy. Please contact the clinic for information on new patient registration and any referral requirements for services covered by the provincial health plan.

Verify registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Maguire-Jonathon-Lee/0201349-79440