About
Dr. Jonathan Jason Aguanno is a Family Doctor. Practicing at Trillium Health Partners in Hamilton, ON, he is dedicated to providing high-quality, comprehensive, and patient-centered family medical care. He is registered with The College of Physicians and Surgeons of Ontario (CPSO) and practices in accordance with the standards set by this regulatory body and the principles of modern family medicine.
Dr. Aguanno's focus is providing continuous and comprehensive primary medical care for individuals and families across all ages and stages of life. This includes preventative care, diagnosis and treatment of acute and chronic illnesses, and management of ongoing health needs, serving as the central point for patient care. He serves patients of all ages, from newborns and infants through to children, adolescents, adults, and seniors. Dr. Jonathan Jason Aguanno completed his Medical Degree. He brings valuable clinical experience to the practice. He has developed skills or a strong interest in areas such as comprehensive primary care within family practice. He is also dedicated to ongoing professional development to stay current with the latest advancements in family medicine.
Key aspects of his practice philosophy include a holistic approach to health, considering the physical, mental, emotional, and social factors that influence a patient's well-being; empowering patients through clear communication, comprehensive health education, and fostering active participation in their own health decisions. He provides consultations in English.

Dr. Jonathan Jason Aguanno provides comprehensive family medical care for a wide variety of health concerns affecting patients of all ages, including but not limited to:
Mental Health Concerns
- Anxiety Disorders (Generalized Anxiety, Panic Disorder, Social Anxiety - Management): Supporting individuals experiencing persistent worry, panic attacks, social phobia, or generalized anxiety with a patient-centered and collaborative approach to care, focusing on symptom reduction and functional improvement.
- Initial Assessment & Referral for Other Mental Health Concerns (e.g., OCD, PTSD, Eating Disorders, Bipolar Disorder, Psychosis): Recognizing signs and symptoms of various serious mental health issues and facilitating timely access to the appropriate level of specialist care and support.
- Insomnia & Chronic Sleep Disturbances: Comprehensive primary care management of common sleep disorders to restore healthy sleep patterns and improve overall health and well-being.
Pediatric Common Issues
- Developmental, Behavioral & Learning Concerns in Children (Screening, Initial Assessment, Guidance & Referral Coordination): A first point of contact and trusted resource for parents with concerns about a child's learning, behavior, social interaction, or overall development, offering support, resources, advocacy, and clear pathways to specialized care and school-based supports.
- Pediatric Asthma, Eczema & Allergy Management (Primary Care): Primary care coordination for childhood asthma, eczema, and allergies, ensuring optimal health, growth, and development, with close collaboration with pediatric specialists when necessary for severe or complex cases.
- Common Childhood Infections (Viral & Bacterial - Ear, Throat, Chest, Skin, GI): Providing prompt, effective, and child-friendly medical care for common infections and acute conditions to ensure quick recovery, appropriate antibiotic stewardship (avoiding unnecessary antibiotics for viral illnesses), and prevent complications.
- Newborn Care & Infant Feeding Support (Breastfeeding, Formula): Ensuring a healthy start for newborns with regular check-ups, timely interventions if issues arise, and resources for parental education and support.
Common Chronic Conditions
- Chronic Obstructive Pulmonary Disease (COPD - Emphysema, Chronic Bronchitis): Helping individuals with chronic bronchitis or emphysema manage their symptoms effectively, improve exercise tolerance, and maintain the best possible lung function through a multidisciplinary approach.
- Type 2 Diabetes Mellitus & Prediabetes: Managing all aspects of type 2 diabetes and prediabetes with personalized treatment plans. This includes regular blood sugar monitoring (self-monitoring, A1c, continuous glucose monitoring (CGM) discussion), prescription and adjustment of medications (oral hypoglycemics, GLP-1 agonists, SGLT2 inhibitors, insulin), comprehensive diet and exercise counseling, and proactive screening and management of diabetes-related complications (retinopathy, nephropathy, neuropathy, foot problems, cardiovascular disease).
- Anemia (Iron Deficiency, B12/Folate Deficiency - Chronic): Investigating causes of chronic or recurrent anemia (e.g., fatigue, pallor) through blood tests (CBC, iron studies, B12, folate, ferritin). Managing common types such as iron deficiency anemia (oral/IV iron supplementation, dietary advice) and vitamin B12 or folate deficiency anemia (supplementation), and identifying/addressing underlying causes (e.g., malabsorption, chronic blood loss, dietary insufficiency).
This list offers some examples of common conditions managed in family practice. A diagnosis is always based on an individual assessment by Dr. Aguanno. If your specific health concern isn't listed, please contact the clinic to discuss your needs.
- Cancer Screening Coordination (Cervical, Breast, Colorectal, Prostate, Lung - as per guidelines): Providing guidance on, ordering, and interpreting results for essential cancer screenings (e.g., Pap tests, HPV testing, mammograms, fecal immunochemical tests (FIT) for colon cancer, PSA discussions for prostate cancer, low-dose CT for lung cancer in high-risk individuals) based on current evidence-based guidelines.
- Management of Common Chronic Pediatric Conditions (e.g., Asthma, Eczema, Allergies): Diagnosing and managing common chronic conditions in pediatric patients, such as asthma (including action plans and inhaler technique), eczema (atopic dermatitis), allergic rhinitis (hay fever), and food allergies (initial assessment and referral if needed), focusing on symptom control, trigger avoidance, and improving quality of life.
- Sexually Transmitted & Blood-Borne Infection (STBBI) Screening, Counseling & Treatment: Providing testing, education, treatment, and advice related to sexual health and the prevention and management of sexually transmitted and blood-borne infections.
- Chronic Pain Management (Musculoskeletal, Neuropathic - Primary Care Approach): Providing a primary care base for managing complex chronic pain, focusing on patient empowerment and coordinating with other specialists and therapies as needed.
- Developmental, Behavioral & Learning Concerns in Children (Initial Assessment, Guidance & Referral): A first point of contact for parents with concerns about a child's learning, behavior, social interaction, or overall development, offering support, resources, and clear pathways to specialized care and school supports.
Note: This list highlights some of the key services offered by Dr. Aguanno. For a comprehensive understanding of all services, or to discuss your specific health needs, please schedule a consultation.
All services are provided in accordance with the scope of practice for Family Doctors in ON and the ethical and professional standards set by The College of Physicians and Surgeons of Ontario (CPSO).
At Trillium Health Partners, family medicine is centered on a collaborative partnership to help individuals like you achieve significant improvements in your health, manage ongoing conditions effectively, and enhance your overall well-being. Dr. Aguanno frequently works with patients towards goals such as:
- A frequent goal for patients seeing Dr. Aguanno about wanting to discuss screening for osteoporosis or how to maintain bone health is to achieve having a clear, actionable, and well-understood plan, along with readily available support from Dr. Aguanno, for effectively managing an acute flare-up of a chronic condition like Inflammatory Bowel Disease (IBD), Chronic Migraine, or Rheumatoid Arthritis (often in co-management with specialists). This success paves the way for them to re-engage with joyfully and responsibly taking care of beloved family pets, which includes activities like daily walking, regular feeding, grooming, active playtime, and providing necessary veterinary care.
- Many patients have successfully addressed questions or concerns about their child's growth, developmental milestones, or specific behaviors with Dr. Aguanno's support. This often leads to benefiting from Dr. Aguanno's proactive and systematic approach to mental health screening and discussion during routine visits, leading to earlier identification and support for emerging psychological distress and the ability to fully participate in confidently enjoying a varied, balanced, and largely unrestricted diet (unless medically indicated for very specific diagnosed conditions like celiac disease or severe allergies) without undue fear of triggering adverse reactions, pain, or significant digestive distress once more.
- With Dr. Aguanno's care, managing experiencing panic attacks and wanting to find ways to manage them aims for getting timely, astute, and accurate diagnoses for puzzling, unusual, or concerning symptoms from Dr. Aguanno, leading to the prompt initiation of appropriate treatment pathways and significantly alleviating anxiety and uncertainty, empowering patients to get back to what they love, like feeling physically strong, mentally resilient, and emotionally capable of consistently handling the often unpredictable and demanding day-to-day responsibilities of active parenting, grand-parenting, or intensive caregiving roles.
- The path to wellness when facing their child having a sudden high fever, being very irritable, and not acting like themselves involves working towards receiving compassionate, understanding, and effective support and strategies from Dr. Aguanno for managing a spectrum of mental health challenges including persistent anxiety, significant depression, debilitating grief, overwhelming life stress, or initial symptoms of more complex psychiatric conditions. Dr. Aguanno guides patients so they can again enjoy generously volunteering their valuable time, unique skills, and boundless energy in their local community for causes they deeply believe in, feeling consistently healthy, capable, and motivated enough to contribute meaningfully and make a real difference.
Your personalized healthcare plan, developed in discussion with Dr. Aguanno, will be thoughtfully designed to help you reach your specific functional, preventative, and wellness objectives. He believes in empowering patients with the knowledge and support needed to take an active role in their health journey.
Dr. Aguanno practices at Trillium Health Partners, situated in the Hamilton Mountain West (Gourley, Rolston) neighborhood of Hamilton. The clinic is conveniently located near Ancaster Village and is accessible via Hamilton Street Railway (HSR). Street parking and nearby public or paid lots typically offer convenient options for visitors.
- Is seeing a family doctor (Family Doctor) covered by Ontario Health Insurance Plan (OHIP) in ON?
- Medically necessary visits to a family doctor are typically covered by the Ontario Health Insurance Plan (OHIP) for eligible residents with a valid provincial health card. Some services (e.g., cosmetic procedures, most travel medicine consultations, sick notes, insurance forms, driver's medicals) may not be covered and might have an associated fee. Please confirm with Trillium Health Partners if you have questions about specific non-insured services or potential fees.
- What exactly is a family doctor (Family Doctor) and what is their role?
- Your family doctor (Ontario) is your primary healthcare provider, expertly trained to care for a wide spectrum of health issues, from newborns to seniors. He manages acute illnesses and injuries, oversees the care of long-term chronic diseases, provides routine health screenings and lifestyle counseling, administers vaccinations, and ensures you get access to specialized medical services through referrals when needed. The continuity of care he provides, understanding your health history and individual needs, is fundamental to effective family medicine.
- Does Dr. Aguanno at Trillium Health Partners offer virtual (video) or phone appointments?
- Yes, Dr. Aguanno at Trillium Health Partners offers virtual (video) and/or phone appointments for certain types of consultations when clinically appropriate. These can be convenient for discussing some test results, managing stable chronic conditions, prescription renewals for ongoing medications (not controlled substances), or for certain mental health follow-ups. However, many conditions, new problems, or situations requiring a physical examination will still necessitate an in-person visit for accurate assessment and diagnosis. Please discuss with our reception staff or Dr. Aguanno if a virtual appointment might be suitable for your specific needs. Provincial health plan coverage for virtual visits may vary; please check with Trillium Health Partners regarding any potential fees for uninsured virtual services.
- Do I need a referral to see a family doctor (Family Doctor) in ON?
- Generally, you do not need a referral to see a family doctor if the doctor is accepting new patients. However, finding a family doctor who is accepting new patients can be challenging. Resources like Health Care Connect in Ontario may be helpful. A referral is usually required to see most medical specialists.
- How can I find a family doctor (Family Doctor) in ON who is accepting new patients?
- Check the website of The College of Physicians and Surgeons of Ontario (it often has a 'Find a Doctor' tool). In Ontario, you can register with Health Care Connect. Ask friends, family, or colleagues for recommendations. Contact local community health centres or new patient clinics. It may take time.
- How do I get a prescription refilled by Dr. Aguanno?
- For most refills, contact your pharmacy at least 5-7 days before you run out. Your pharmacy can fax a refill request to Dr. Aguanno's office. Allow at least 2-3 business days for processing. For certain medications (e.g., narcotics, controlled substances), or if it has been a while since your last visit, an appointment will be required. Request refills proactively.
- What happens if Dr. Aguanno determines I need to see a medical specialist?
- If Dr. Aguanno determines you need a specialist, he will discuss this with you and initiate a referral. This involves sending a referral letter to the specialist. Wait times vary. Trillium Health Partners will inform you once the referral is sent; the specialist will contact you to schedule an appointment. Follow up if you haven't heard within a reasonable timeframe.
- How often should I see Dr. Aguanno for a check-up or physical exam?
- The recommended frequency varies based on your age, health, existing conditions, and risk factors. Generally, healthy younger adults may need less frequent check-ups (e.g., every 2-5 years), while children, older adults (e.g., annually over 65), or those with chronic conditions may need more frequent visits (e.g., annually or semi-annually). Discuss your individual needs with Dr. Aguanno.
Trillium Health Partners
565 Sanatorium Rd, Mississauga Hospital
Hamilton, ON, L9C 7N4
Phone: (289) 309-2119
Dr. Jonathan Jason Aguanno is regulated by the Regulated Health Professions Act, 1991 & Medicine Act, 1991 (Ontario) in ON and is a registered member in good standing with The College of Physicians and Surgeons of Ontario (CPSO).
Registration Number: 70121
Verify registration with The College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Aguanno-Jonathan-Jason/0116958-70121
Family doctors like Dr. Aguanno are skilled in managing a wide range of health issues. For urgent or life-threatening emergencies, please call 911 or visit the nearest emergency department. It is always recommended to maintain open communication with your family doctor about all aspects of your health, including any treatments received from other practitioners.