Dr. Warren Lester Lee – Internist / Geriatrician | Toronto, ON

With extensive experience in Internal Medicine and Geriatric Care, Dr. Warren Lester Lee serves as a trusted medical specialist. Practicing in Toronto, ON, he provides comprehensive care in Internal Medicine and Geriatric Care. His practice is dedicated to addressing the complex health needs of adults, including older adults and seniors, ensuring they receive personalized and effective medical attention.

Dr. Lee graduated with a Medical Degree from the University of Toronto in 1997. He has completed extensive post-graduate medical training, including residency in Internal Medicine and specialized fellowships in Geriatric Medicine. His certifications are maintained in accordance with the standards of the College of Physicians and Surgeons of Ontario (CPSO), ensuring adherence to high professional and ethical standards.

He is committed to delivering patient-centered care with a clear and educational approach, fostering understanding and active participation in health management. Fluent in English, Dr. Lee is dedicated to serving the Toronto community and its surrounding areas with compassion and professionalism.

Dr. Lee provides expert care for adults with a wide range of medical conditions, including:

Endocrine & Metabolic Disorders

• Thyroid Disorders: Management of hypothyroidism, hyperthyroidism, thyroid nodules, and other thyroid conditions.
• Osteoporosis & Metabolic Bone Disease: Diagnosis, risk assessment, and treatment strategies for conditions affecting bone strength and metabolism.
• Calcium and Parathyroid Disorders: Evaluation and management of conditions related to abnormal calcium levels and parathyroid gland function.

Complex Diagnostic & Multi-System Issues

• Syncope (Fainting) Evaluation: Comprehensive work-up to determine the cause of fainting spells or loss of consciousness.
• Investigation of Anemia: Diagnosing the underlying cause of low red blood cell counts.
• Evaluation of Undifferentiated Symptoms: Investigating complex presentations like fatigue, weight loss, or pain without a clear diagnosis.

Select Infectious & Inflammatory Conditions

• Complex Infections Consultation: Providing diagnostic and management expertise for challenging infections, often in consultation with primary care.
• Fever of Unknown Origin (FUO) Workup: Systematic investigation to determine the cause of prolonged, unexplained fevers.
• Evaluation of Inflammatory Markers: Investigating elevated inflammatory markers (like ESR or CRP) to identify potential underlying systemic conditions.

Dr. Lee manages a wide range of complex adult and geriatric health conditions. This list highlights common areas of focus. If your condition is not listed, please note that internal medicine specialists address diverse and often multi-systemic diseases. Consultation is typically initiated via referral from your primary care physician.

• Preventative Health Risk Assessment: Evaluating individual risk factors for major chronic diseases (e.g., cardiovascular disease, osteoporosis) and developing preventative strategies.
• Osteoporosis and Bone Health Management: Screening, diagnosis, and treatment of osteoporosis to prevent fractures in older adults.
• Falls Risk Assessment and Prevention: Identifying factors contributing to falls in older adults and implementing strategies to improve balance, strength, and home safety.
• Management of Chronic Respiratory Conditions: Ongoing care for conditions such as COPD, asthma, and interstitial lung diseases, focusing on symptom control and exacerbation prevention.
• Management of Geriatric Syndromes: Specialized care for common age-related conditions including falls, frailty, cognitive impairment (dementia, delirium), polypharmacy, urinary incontinence, and malnutrition.

Note: This list represents some of the key services offered by Dr. Lee. As a specialist in Internal Medicine and Geriatric Care, he provides comprehensive diagnostic and management services. For specific inquiries about whether your condition falls within Dr. Lee's scope of practice, please discuss with your referring physician or contact the clinic.

All medical services are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO).

Dr. Lee's practice is located in the Garden District, within the Ryerson neighbourhood of Toronto. The clinic is situated within North York General Hospital, providing easy access for patients. The area nearby includes Sugar Beach, offering a scenic environment for those visiting the clinic. The location is well-served by public transportation, including the TTC subway, streetcar, and bus services. The facility is wheelchair accessible. Parking is available at the facility.

How is payment handled for appointments with Dr. Lee? Is it covered by Ontario Health Insurance Plan (OHIP)?

In ON, medical consultations with specialists like Dr. Lee are typically covered by your provincial health insurance (Ontario Health Insurance Plan (OHIP)) when you present a valid health card and have the required referral. You generally do not pay directly for the consultation service itself. Some specific procedures, forms, or administrative tasks might not be covered by Ontario Health Insurance Plan (OHIP) and may incur a separate fee according to provincial guidelines. Please inquire if you have questions about uninsured services.

Can I book an appointment directly or do I absolutely need a referral?

A referral from your family physician or another medical specialist is required to see Dr. Lee. As experts in Internal Medicine and Geriatric Care, Internists and Geriatricians see patients based on specific medical questions posed by the referring doctor. This ensures continuity of care and that the consultation is appropriate for your needs. Please have your doctor forward the referral information.

What should I do if I have an urgent medical problem?

Dr. Lee's office provides specialist consultations and is not equipped for emergency care. If you have an urgent medical issue or emergency, please contact your family doctor, go to the nearest hospital Emergency Department, or call 911.

What happens after the initial consultation?

After your assessment, Dr. Lee will typically send a detailed consultation report with findings and recommendations to your referring physician. Depending on your specific situation and the reason for referral, Dr. Lee may arrange follow-up appointments, order further tests, or transition care management back to your family doctor with specialist guidance. The plan will be discussed with you.

Will Dr. Warren Lester Lee replace my family doctor?

No, Dr. Lee acts as a specialist consultant. Your family doctor (or primary care provider) remains responsible for your routine healthcare, ongoing prescriptions (unless specified otherwise by the specialist), and coordinating your overall care. Dr. Lee will communicate findings and recommendations back to your family doctor.

North York General Hospital
1NW-126, 30 Bond St
Toronto, ON M5B 1W8

Phone: (416) 864-6060

The facility is wheelchair accessible.

Dr. Lee is a licensed physician regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Medicine Act, 1991 in ON. Patients are typically seen by referral from their primary care physician.

Verify registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Lee-Warren-Lester/0139751-71364