Dr. Calvin Frederick Johnston – Family Doctor | Waterloo, ON

Dr. Calvin Frederick Johnston is a Family Doctor. Practicing at a family doctor practice in Waterloo, 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. He focuses on 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. Calvin Frederick Johnston 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 advocating for patients' needs within the healthcare system and coordinating care effectively with specialists and community services; a commitment to evidence-based medicine, integrating the latest research with clinical expertise to provide the highest standard of care; empowering patients through clear communication, comprehensive health education, and fostering active participation in their own health decisions. He provides consultations in English.

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

Common Chronic Conditions

• Chronic Kidney Disease (CKD) - Early to Moderate Stages: Primary care strategies to protect and preserve kidney health, including tight blood pressure and glycemic control, and education on kidney-friendly habits.
• Dyslipidemia (High Cholesterol, High Triglycerides): Screening, diagnosis, and management of abnormal lipid profiles (high LDL cholesterol, low HDL cholesterol, high triglycerides) through lifestyle modifications (heart-healthy diet, physical activity, weight management) and, when indicated, prescription of lipid-lowering medications (e.g., statins, ezetimibe, fibrates, PCSK9 inhibitors) based on cardiovascular risk assessment.
• Asthma (All Ages) & Allergic Rhinitis: Working collaboratively with you (or your child) to achieve optimal asthma control, minimize symptoms (wheezing, coughing, shortness of breath), improve lung function, and reduce reliance on reliever medications.

Mental Health Concerns

• Insomnia & Chronic Sleep Disturbances: Thoroughly evaluating persistent sleep problems (difficulty initiating or maintaining sleep, early morning awakening, non-restorative sleep), offering education on optimal sleep hygiene, principles of cognitive behavioral therapy for insomnia (CBT-I) or facilitating referrals for it, addressing underlying contributing factors (e.g., anxiety, pain, medications, restless legs syndrome), and judiciously considering short-term medication if necessary.
• Depression & Other Mood Disorders (e.g., Dysthymia, Seasonal Affective Disorder - Management): Assessing symptoms of depression (low mood, loss of interest/pleasure, fatigue, changes in sleep/appetite) and other mood disorders. Offering empathetic supportive counseling, discussing and initiating treatment options including lifestyle interventions, evidence-based antidepressant medications, and facilitating referrals to psychotherapy or psychiatry for moderate to severe or treatment-resistant cases.
• Anxiety Disorders (Generalized Anxiety, Panic Disorder, Social Anxiety - Management): Ongoing management and support for anxiety disorders, helping patients develop coping strategies, achieve symptom remission or reduction, and improve overall well-being.
• Stress-Related Conditions, Burnout & Adjustment Disorders: Helping individuals build resilience, develop adaptive coping mechanisms (e.g., problem-solving, relaxation techniques, mindfulness), and navigate stressful periods effectively to protect their mental and physical health.

Adult Common Health Issues

• Helicobacter pylori (H. pylori) Infection - Testing & Eradication Therapy: Testing for Helicobacter pylori infection in appropriate clinical contexts (e.g., patients with peptic ulcer disease, certain types of gastritis, dyspepsia in high-prevalence areas, or family history of gastric cancer) using non-invasive methods like urea breath test, stool antigen test, or serology (less reliable for active infection).
• 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.
• 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.
• Anemia (Iron Deficiency, Vitamin B12/Folate Deficiency - Diagnosis & Management): Investigating causes of anemia (e.g., symptoms like fatigue, pallor, dyspnea on exertion, dizziness, palpitations, restless legs) through thorough history (diet, medications, menstrual history, GI symptoms), physical examination, and targeted blood tests (Complete Blood Count - CBC with differential and red cell indices, iron studies including ferritin, serum vitamin B12, serum folate, reticulocyte count, LDH, bilirubin if hemolysis suspected).

Common Acute Conditions

• Allergic Reactions (Mild to Moderate - e.g., Hay Fever, Hives, Minor Food Allergy Symptoms): Providing advice on allergen avoidance, prescribing antihistamines, intranasal corticosteroids or other medications for symptom relief, and discussing options like allergy testing or specialist referrals if indicated for more severe or complex allergies.
• Urinary Tract Infections (UTIs - Cystitis, Pyelonephritis - uncomplicated initial): Prompt diagnosis (e.g., urinalysis, urine culture if needed) and treatment for uncomplicated urinary tract infections such as cystitis (bladder infection) and initial assessment/management of suspected uncomplicated pyelonephritis (kidney infection) to alleviate discomfort (dysuria, frequency, urgency, flank pain) and prevent complications.
• Common Acute Skin Conditions (Rashes, Infections, Bites, Minor Burns): Managing various acute dermatological conditions with appropriate topical or oral medications (antibiotics, antifungals, corticosteroids, antihistamines) to alleviate itching, redness, pain, swelling, and discomfort.

Joint Muscle Pain

• Fibromyalgia & Other Widespread Chronic Pain Syndromes - Primary Care Diagnosis & Multimodal Management: A supportive, holistic, and patient-centered primary care approach to helping individuals manage the complex and often debilitating symptoms of fibromyalgia (widespread pain, profound fatigue, sleep disturbance, cognitive dysfunction - 'fibro fog', mood disturbances), aiming to improve daily function, reduce pain interference, and enhance overall quality of life.
• Gout & Pseudogout (Crystal Arthropathies) - Acute Attack Management & Chronic Prevention Strategies: Diagnosing (often clinical, supported by serum uric acid levels; joint aspiration for crystal analysis if diagnostically uncertain or to rule out septic arthritis) and managing acute gout or pseudogout attacks with appropriate anti-inflammatory medications (NSAIDs like naproxen/indomethacin, colchicine, oral or intra-articular corticosteroids).
• Mechanical Low Back & Neck Pain (Acute, Subacute, Chronic - Uncomplicated): Assessment and management of non-specific (mechanical) low back pain and neck pain, which accounts for the majority of spinal pain presentations. This includes taking a thorough history, performing a focused physical examination to rule out 'red flag' conditions (e.g., fracture, infection, malignancy, cauda equina syndrome), providing reassurance about the generally favorable prognosis of acute pain, and advising on pain relief (acetaminophen, NSAIDs, short-term muscle relaxants if severe spasm), maintaining activity as tolerated (avoiding prolonged bed rest), heat/cold application, and self-care strategies. For subacute or chronic pain, emphasis on active therapies (exercise, physiotherapy referral), addressing psychosocial factors (yellow flags), and promoting functional restoration.

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

• Cardiovascular & Metabolic Risk Assessment & Management: Identifying individuals at higher risk for heart attacks, strokes, or diabetes to implement early interventions and promote long-term health.
• Cardiovascular Disease Management (Stable CAD, Heart Failure, Atrial Fibrillation): Ongoing management of stable cardiovascular conditions like coronary artery disease (CAD), congestive heart failure (CHF), and atrial fibrillation (AFib), often in collaboration with cardiologists, focusing on medication optimization (e.g., anticoagulants for AFib), risk factor reduction, symptom monitoring, and patient education.
• Smoking & Tobacco Cessation Programs & Support: Providing evidence-based resources, behavioral strategies, and relapse prevention planning to overcome nicotine addiction and achieve long-term cessation.
• Primary Care for Overuse & Repetitive Strain Injuries: Advising on activity modification, ergonomic adjustments, stretching/strengthening exercises, and pain relief measures for overuse injuries.
• Fungal, Viral & Bacterial Skin Infections: Effective remedies for bothersome infections of the skin, hair, and nails.

Note: This list highlights some of the key services offered by Dr. Johnston. 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 Dr. Calvin Frederick Johnston's practice, 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. Johnston frequently works with patients towards goals such as:

• A key objective when treating concerns about exposure to an infectious disease like measles or chickenpox at Dr. Johnston's clinic is their elderly parents or relatives receiving thoughtful, patient, dignified, and age-appropriate comprehensive care from Dr. Johnston that demonstrably enhances their functional abilities, safety, and overall quality of life in their later years, supporting a comfortable return to graciously hosting enjoyable social gatherings, dinner parties, or casual get-togethers for friends, colleagues, and family members in their home, feeling comfortable, energetic, and capable as a host.
• Dr. Johnston understands the impact of needing support, resources, and a concrete plan to help them quit smoking for good this time. That's why treatment is geared towards seeing profoundly positive and lasting changes in their overall approach to health, preventative self-care, and health-seeking behaviors as a direct and inspiring result of Dr. Johnston's ongoing education, consistent encouragement, and positive role modeling, helping patients get back to feeling mentally sharp, agile, and capable enough to readily engage in complex problem-solving tasks, intricate strategic thinking exercises, or detailed analytical work required in their profession or personal projects with greater ease.
• Overcoming or managing symptoms of a possible urinary tract infection (UTI) like burning pain, increased frequency, or urgency to urinate is a common patient journey at Dr. Johnston's practice. The focus is on enabling 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. Johnston, so that engaging in effectively managing their personal or household finances, diligently paying bills on time, and competently handling other essential administrative or organizational tasks with sustained mental clarity and focus becomes a reality again.

Your personalized healthcare plan, developed in discussion with Dr. Johnston, 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. Johnston practices at a family medical clinic in Waterloo, situated in the University District (University of Waterloo, Wilfrid Laurier University) neighborhood of Waterloo. The clinic is conveniently located near the University of Waterloo and is accessible via Grand River Transit (GRT) (Bus and ION Light Rail). Ample parking is generally accessible close to the clinic entrance; please observe local signage.

How can I find a family doctor (Family Doctor) in ON who is accepting new patients?

Finding a family doctor in Ontario who is accepting new patients can be challenging. The College of Physicians and Surgeons of Ontario often has a "Find a Doctor" tool or list on their website. In Ontario, you can register with Health Care Connect. You can also ask friends, family, or colleagues for recommendations, or contact local community health centres or new patient clinics directly. It may take time to find a suitable doctor.

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 they are accepting new patients. However, finding a family doctor who is accepting new patients can be difficult. Provincial resources like Health Care Connect in Ontario may be helpful. A referral from your family doctor is usually required to see specialists.

Does Dr. Johnston at {clinic_name_if_available_else_your_clinic} offer virtual (video) or phone appointments?

Yes, Dr. Johnston at our clinic 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. Johnston if a virtual appointment might be suitable for your specific needs. Provincial health plan coverage for virtual visits may vary; please check with our clinic regarding any potential fees for uninsured virtual services.

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.

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. However, some services, such as cosmetic procedures or travel medicine consultations, may not be covered and might have an associated fee. Please confirm with our clinic if you have questions about specific services or potential fees.

How do I get a prescription refilled by Dr. Johnston?

For most prescription refills, please contact your pharmacy first, at least 5-7 days before you run out of medication. Your pharmacy can often fax a refill request directly to Dr. Johnston's office. Please allow at least 2-3 business days for these requests to be processed by Dr. Johnston. For certain medications (e.g., narcotics, controlled substances, or medications requiring close monitoring), or if it has been a while since your last review with Dr. Johnston, an appointment will be required to assess your condition and ensure the medication is still appropriate and at the correct dose. It is always best to request refills proactively.

106-318 Spruce St
Waterloo, ON, N2L 0E9

Phone: (519) 725-1111

Dr. Calvin Frederick Johnston 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: 101188

Verify registration with The College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Johnston-Calvin-Frederick/0288707-101188

Family doctors like Dr. Johnston 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.