Dr. Gabriel David Chan – Family Doctor | St Catharines, ON

Dr. Gabriel David Chan is a Family Doctor. Practicing at Toronto General Hospital in St Catharines, 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. His 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. Gabriel David Chan 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; advocating for patients' needs within the healthcare system and coordinating care effectively with specialists and community services. He provides consultations in English.

Dr. Gabriel David Chan provides comprehensive family medical care for a wide variety of health concerns affecting patients of all ages, including but not limited to:

Adult Common Health Issues

• Venous Insufficiency & Varicose Veins (Conservative Management & Lifestyle Advice): Primary care support for managing discomfort and preventing complications associated with venous disease. Referral to vascular specialists or phlebologists for more advanced treatments (e.g., sclerotherapy, endovenous ablation, surgery) if symptoms are severe, progressive, or complicated by ulceration or recurrent phlebitis.
• Benign Prostatic Hyperplasia (BPH) - Symptom Management & Monitoring: Management includes lifestyle advice (fluid management, avoiding bladder irritants), behavioral therapies (timed voiding), and prescription of medications such as alpha-blockers (e.g., tamsulosin, alfuzosin) to relax prostate/bladder neck muscles, or 5-alpha-reductase inhibitors (e.g., finasteride, dutasteride) to shrink prostate volume. Monitoring for symptom improvement and medication side effects.
• Allergic Conjunctivitis & Dry Eye Syndrome - Primary Care Management: Diagnosing and managing common eye conditions like allergic conjunctivitis (itchy, red, watery eyes often seasonal or related to specific allergens) with advice on allergen avoidance, cool compresses, artificial tears, and topical/oral antihistamines or mast cell stabilizers. Assessing and providing initial management for dry eye syndrome (keratoconjunctivitis sicca - gritty, burning, foreign body sensation, intermittent blurry vision) with education on environmental modifications, regular use of artificial tears/lubricating ointments, and advice on blinking exercises/lid hygiene. Referral to ophthalmology if symptoms are severe, persistent, vision is affected, or diagnosis is uncertain.
• Anemia (Iron Deficiency, Vitamin B12/Folate Deficiency - Diagnosis & Management): Managing common types of nutritional anemia such as iron deficiency anemia (oral or intravenous iron supplementation, dietary advice to increase iron intake and absorption, investigation for source of chronic blood loss if suspected - e.g., GI bleed, heavy menses) and megaloblastic anemia due to vitamin B12 or folate deficiency (oral or parenteral supplementation, dietary counseling, investigation for underlying causes like pernicious anemia, malabsorption syndromes - celiac disease, Crohn's, post-gastric surgery, medication effects - metformin, PPIs).

Joint Muscle Pain

• Gout & Pseudogout (Crystal Arthropathies) - Acute Attack Management & Chronic Prevention Strategies: Providing long-term management strategies for chronic gout to prevent recurrent attacks and complications (e.g., tophi, chronic gouty arthropathy, kidney stones), including detailed lifestyle advice (dietary modifications - reducing purine-rich foods such as red meat/organ meats/shellfish, limiting alcohol especially beer and spirits, avoiding sugary drinks/high-fructose corn syrup; hydration; weight management if overweight/obese) and initiating/managing urate-lowering therapy (ULT) such as allopurinol or febuxostat to achieve and maintain target serum uric acid levels (typically <360 µmol/L or <300 µmol/L if tophi present). Monitoring for medication side effects, adherence, and regular serum uric acid levels.
• Mechanical Low Back & Neck Pain (Acute, Subacute, Chronic - Uncomplicated): Primary care coordination for back and neck pain, including referral to physiotherapy, chiropractic, massage therapy, or specialist pain services when appropriate for persistent or disabling symptoms.
• Polymyalgia Rheumatica (PMR) - Diagnosis, Management & Monitoring (Often with Rheumatology Co-Management): Often co-managed with or referred to rheumatology, especially for atypical presentations, diagnostic uncertainty, difficulty tapering corticosteroids, frequent relapses, or suspected GCA. Primary care plays a key role in ongoing monitoring, patient education, and supportive care for PMR.
• Repetitive Strain Injuries (RSI), Tendinopathies & Work-Related Musculoskeletal Disorders (WRMSDs) - Initial Assessment & Conservative Management: A first point of contact for work-related or activity-induced repetitive strain injuries, guiding effective conservative management, facilitating return to function, and providing documentation for workplace accommodations if necessary. Referral to specialists (e.g., sports medicine, orthopedics, physiatry) if symptoms are persistent, severe, or require further investigation/intervention.

Pediatric Common Issues

• Newborn Care & Infant Feeding Support (Breastfeeding, Formula): Supporting new parents in caring for their infant, addressing common concerns (colic, reflux, sleep patterns), and promoting bonding and healthy attachment.
• Developmental, Behavioral & Learning Concerns in Children (Screening, Initial Assessment, Guidance & Referral Coordination): Providing initial guidance and evidence-based parenting strategies, and coordinating timely referrals to appropriate pediatric specialists (e.g., developmental pediatricians, child psychologists/psychiatrists, speech-language pathologists, occupational therapists, audiologists) if further evaluation, diagnosis, or specialized intervention is indicated.
• Adolescent Health Care & Counseling (Physical, Mental, Sexual Health, Lifestyle, Substance Use): Providing confidential, respectful, and age-appropriate comprehensive primary care for teenagers (typically ages 12-18+). Addressing a wide range of issues including pubertal development, acne, body image concerns, sports injuries, mental health (screening for anxiety, depression, stress, eating disorders), sexual health education (contraception, STI prevention/screening, healthy relationships), substance use (screening, brief intervention, counseling), and promoting healthy lifestyle choices (nutrition, physical activity, sleep, responsible digital media use).
• Well-Baby & Well-Child Check-ups (Growth, Development, Nutrition, Safety): Ensuring your child meets key developmental stages according to age, receives all recommended preventative health screenings (e.g., vision, hearing, anemia, lead - as per guidelines), and appropriate immunizations in a timely manner.

Preventative Health Topics

• Driver's Medical Examinations (Routine, Age-Related, Commercial): Performing comprehensive driver's medicals to ensure individuals meet the health standards necessary for safe vehicle operation, promoting road safety for all.
• Travel Medicine Advice & Routine/Travel Vaccinations: Offering essential travel health services and tailored advice to protect your health while abroad, based on current international health regulations, CDC/WHO recommendations, and your specific travel plans.
• Weight Management & Obesity Prevention/Treatment: Supporting individuals in achieving and maintaining a healthy body weight through non-stigmatizing, patient-centered approaches that focus on sustainable lifestyle habits, improved metabolic health, and overall well-being rather than solely on rapid weight loss or restrictive dieting.
• Comprehensive Lifestyle Counseling (Diet, Exercise, Sleep, Stress Reduction): Providing personalized, evidence-based advice on adopting and maintaining a balanced diet (e.g., Canada's Food Guide, Mediterranean diet, plant-based options), engaging in regular physical activity (aerobic, strength, flexibility - meeting Canadian Physical Activity Guidelines), achieving optimal sleep hygiene, and implementing effective stress management techniques (mindfulness, relaxation) to promote overall health, prevent chronic diseases, and enhance well-being.

This list offers some examples of common conditions managed in family practice. A diagnosis is always based on an individual assessment by Dr. Chan. If your specific health concern isn't listed, please contact the clinic to discuss your needs.

• Management of Acute Dermatological Conditions (Rashes, Hives, Shingles): Providing care for various acute dermatological concerns, offering treatment options (topical or oral) and referrals to dermatology if needed for severe or complex cases.
• Attention-Deficit/Hyperactivity Disorder (ADHD) Care (All Ages - Initial & Ongoing): A comprehensive approach to ADHD care, addressing challenges in attention, hyperactivity, and impulsivity across the lifespan.
• Diagnosis & Management of Common Acute Childhood Illnesses: Expert management of a wide spectrum of acute illnesses affecting infants, toddlers, school-aged children, and teenagers, including appropriate antibiotic stewardship.
• Fungal, Viral & Bacterial Skin Infections: Diagnosis and treatment of common superficial infections like tinea (ringworm, athlete's foot), candidiasis, warts (cryotherapy, topical agents), molluscum contagiosum, herpes simplex/zoster (shingles), impetigo, and folliculitis, using appropriate topical or oral antifungal, antiviral, or antibacterial medications.
• Evaluation of Acute Headaches & Dizziness / Vertigo: Providing care for acute episodes of headache or dizziness/vertigo, offering relief strategies and guidance.

Note: This list highlights some of the key services offered by Dr. Chan. 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 Toronto General Hospital, 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. Chan frequently works with patients towards goals such as:

• Addressing having trouble falling asleep most nights, or waking up frequently and feeling exhausted with Dr. Chan often leads to feeling much more confident and competent in managing minor common illnesses at home for themselves or their children after receiving clear, practical instructions and valuable anticipatory guidance from Dr. Chan, enabling patients to more freely engage in being physically and emotionally able to consistently attend and meaningfully participate in important community gatherings, significant religious or spiritual services, and culturally relevant events that foster a sense of belonging and connection.
• Many seek Dr. Chan's help for that persistent, dry cough that just won't seem to go away after a cold. The collaborative goal is feeling substantially more in control of their personal health journey, demonstrably better equipped to make informed health decisions for themselves and their family, and genuinely optimistic about their future health prospects due to the guidance and partnership with Dr. Chan, allowing a return to valued activities like successfully maintaining a clean, organized, and uncluttered living space that actively contributes to their sense of calm, mental clarity, physical safety, and overall feelings of well-being at home.
• Dr. Chan's care for a recurring ear infection, or their child tugging at their ear and being fussy is designed to result in successfully and permanently quitting smoking, vaping, or significantly reducing harmful substance use with the consistent, non-judgmental, evidence-based support, counseling, and resources provided by Dr. Chan, so patients can resume activities such as feeling well-prepared, physically able, and mentally positive for attending and fully participating in significant, once-in-a-lifetime family or social events like weddings, milestone anniversaries, international reunions, or major academic graduations with confidence.
• When their child having issues with persistent allergies, eczema flare-ups, or food sensitivities affects a patient's ability to 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, Dr. Chan works with them to develop a plan. Success means reaching achieving more restorative and consistent sleep patterns and experiencing increased daytime energy levels and cognitive function after effectively addressing underlying sleep disturbances with Dr. Chan's comprehensive assessment and management plan and getting back to their valued pursuits.

Your personalized healthcare plan, developed in discussion with Dr. Chan, 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. Chan's practice at Toronto General Hospital is situated in a family medical practice in the central St. Catharines neighborhood of St. Catharines. The clinic is conveniently located near local community centers, schools, and shopping areas and is accessible via major local public transit routes. Street parking and nearby public or paid lots typically offer convenient options for visitors.

What should I do if I have an urgent medical issue when Toronto General Hospital is closed?

If you have a life-threatening medical emergency, please call 911 or go to the nearest hospital emergency department immediately. For urgent, non-life-threatening issues that cannot wait until Toronto General Hospital reopens, you may consider visiting an urgent care centre or a walk-in clinic. Some family health teams or groups offer after-hours on-call services for their registered patients; please check with Toronto General Hospital or Dr. Chan during regular hours to see if such arrangements are in place for their practice. Our clinic voicemail [(905) 378-4647] may also provide instructions or resources for after-hours care.

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 in Ontario 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 from a family doctor to see most medical specialists.

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 OHIP for eligible residents with a valid health card. Some services, such as cosmetic procedures or travel medicine consultations, may not be covered and might have an associated fee. Please confirm with Toronto General Hospital if you have questions about specific non-insured services or potential fees.

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, which 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. Finding a doctor may take time.

What exactly is a family doctor (Family Doctor) and what is their role?

A family doctor, often called a general practitioner (GP), is a medical doctor specializing in comprehensive primary healthcare for individuals and families across all ages and life stages. They serve as your first point of contact for most health concerns, offering preventative care, diagnosing and treating illnesses, managing chronic conditions, providing mental health support, and coordinating your care with specialists when necessary. Building long-term relationships with patients is a key aspect of their role.

Toronto General Hospital
1200 Fourth Ave
St Catharines, ON, L2S 0A9

Phone: (905) 378-4647

Dr. Gabriel David Chan 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: 110789

Verify registration with The College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Chan-Gabriel-David/0310833-110789

Family doctors like Dr. Chan 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.