About
Dr. Dennis Raphael Shi Yuan Lim, a respected Internist / Geriatrician, focuses on evidence-based medicine and personalized care plans. Practicing in Markham, ON, he serves the surrounding communities with a commitment to providing comprehensive and compassionate healthcare. His practice is aligned with the standards set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring quality and safety in every aspect of patient care. Dr. Lim specializes in managing complex adult and geriatric health conditions, emphasizing holistic and patient-centered approaches.
Dr. Lim graduated with a Medical Degree from Dalhousie University Faculty of Medicine in 2016, gaining a solid foundation in medical sciences and clinical practice. He has completed extensive postgraduate medical training, including residency in Internal Medicine and additional certifications in Geriatric Medicine, enabling him to address a broad spectrum of adult health issues with expertise and precision.
His clinical philosophy centers on clear, educational communication and evidence-based decision making. He is dedicated to serving the residents of Markham and the wider community, offering care in English and ensuring patients understand their health conditions and treatment options. Dr. Lim is committed to ongoing professional development to stay current with evolving medical practices and guidelines.
Dr. Lim provides expert care for adults with a wide range of medical conditions, including:
Complex Diagnostic & Multi-System Issues
- Investigation of Anemia: Diagnosing the underlying cause of low red blood cell counts.
- Syncope (Fainting) Evaluation: Comprehensive work-up to determine the cause of fainting spells or loss of consciousness.
- Management of Patients with Multiple Comorbidities: Coordinating care and treatment plans for individuals managing several complex health conditions simultaneously.
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.
Management of Chronic Diseases
- Chronic Kidney Disease (CKD): Monitoring kidney function, managing complications (anemia, bone disease, electrolytes), and strategies to slow disease progression.
- Cardiovascular Conditions: Medical management of heart failure, coronary artery disease (stable), arrhythmias (like atrial fibrillation), and valvular heart disease.
- Diabetes Mellitus (Type 1 & 2): Comprehensive management including glucose control strategies, complication prevention, and patient education.
Dr. Lim 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.
- Comprehensive Diagnostic Assessment: In-depth evaluation for adults with complex, unclear, or multi-system medical conditions, involving detailed history, physical examination, and coordination of necessary investigations.
- Assessment of Functional Decline: Investigating and managing sudden or gradual changes in an older adult's ability to perform daily activities.
- Management of Complex Chronic Diseases: Ongoing care and treatment optimization for adults managing multiple chronic conditions such as diabetes, heart disease, kidney disease, hypertension, and respiratory illnesses.
- Medication Review and Optimization (Deprescribing): Systematic review of all medications (polypharmacy) to ensure appropriateness, minimize side effects and interactions, and deprescribe unnecessary drugs.
Note: This list represents some of the key services offered by Dr. Lim. 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. Lim'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. Lim's practice is located in the Greensborough neighborhood of Markham, within the Westhill Medical Centre. The clinic is conveniently situated near the Markham Fairgrounds and is easily accessible via York Region Transit (YRT) and Viva transit services. The facility is wheelchair accessible. Parking is available at the facility.
- How is payment handled for appointments with Dr. Lim? Is it covered by Ontario Health Insurance Plan (OHIP)?
- In ON, medical consultations with specialists like Dr. Lim 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. Lim. 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 is involved in a Comprehensive Geriatric Assessment (CGA)?
- A CGA is a detailed evaluation specifically designed for older adults. It goes beyond standard medical checks to assess multiple domains including: medical conditions, medication review (polypharmacy), functional status (ability to perform daily tasks), mobility and fall risk, cognitive health (memory and thinking), mood (screening for depression/anxiety), nutrition, and social support systems. Dr. Lim uses this holistic approach to develop a personalized care plan.
- How long should I expect my appointment to last?
- Initial consultations with Dr. Lim are comprehensive and typically require more time, often ranging from 45 to 75 minutes, depending on the complexity of your medical history and concerns. Follow-up appointments are usually shorter. We recommend allowing ample time for your visit, including check-in and potential waiting periods.
- Can a family member or friend accompany me to the appointment?
- Yes, absolutely. Patients are welcome to bring a family member, friend, or caregiver to their appointment for support, to help recall information, or to ask questions. Especially for complex discussions or if memory is a concern, having a second person present can be very beneficial.
Westhill Medical Centre
112-379 Church St
Markham, ON L6B 0T1
Phone: (905) 471-0460 | Fax: (905) 471-5336
The facility is wheelchair accessible.
Dr. Lim 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/Lim-Dennis-Raphael-Shi-Yuan/0323853-114353