About
Dr. Thomas Andrew Warren is a dedicated Internist / Geriatrician committed to providing comprehensive medical care for adults, with a focus on complex conditions and geriatric health. Practicing in Oakville, ON, he serves the surrounding communities with a patient-centered approach. Dr. Warren adheres to the highest standards of clinical practice as outlined by the College of Physicians and Surgeons of Ontario (CPSO), ensuring that all patients receive safe and effective care.
He graduated with a Medical Degree from Schulich School of Medicine and Dentistry in 2005 in Canada. Following his graduation, Dr. Warren completed extensive post-graduate medical training, including residency in Internal Medicine and specialized fellowships in Geriatric Medicine. His training emphasizes both the diagnosis and management of complex adult health issues, with a particular interest in aging-related conditions.
Dr. Warren’s clinical philosophy is rooted in a professional and clinical approach, prioritizing evidence-based medicine and personalized patient care. He is committed to serving the Oakville community and speaks English fluently. His practice focuses on comprehensive assessment and management of adult and geriatric health conditions, aiming to improve quality of life and functional independence for his patients.
Dr. Warren provides expert care for adults with a wide range of medical conditions, including:
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.
Complex Diagnostic & Multi-System Issues
- Evaluation of Undifferentiated Symptoms: Investigating complex presentations like fatigue, weight loss, or pain without a clear diagnosis.
- Perioperative Medical Optimization: Pre-surgical assessment and management of medical conditions to minimize operative risks and ensure smoother recovery.
- Syncope (Fainting) Evaluation: Comprehensive work-up to determine the cause of fainting spells or loss of consciousness.
Geriatric Syndromes & Focused Elder Care
- Cognitive Impairment & Dementia Syndromes: Comprehensive assessment for memory loss/cognitive changes; diagnosis and management of Alzheimer's disease, vascular dementia, and others.
- Falls, Mobility & Balance Disorders: Multifactorial assessment to identify causes of falls and gait instability; implementation of prevention strategies.
- Delirium Prevention & Management: Identifying risk factors for delirium (acute confusion) in hospitalized or ill older adults and implementing management strategies.
Dr. Warren 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.
- 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 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.
- Management of Acute Medical Issues (Inpatient Focus): Diagnosis and treatment of serious acute illnesses requiring hospital admission (often a primary role in hospital settings).
- Coordination of Specialist Care: Acting as a central point of contact to help manage and coordinate input from various medical specialists for patients with multi-system diseases.
- Internal Medicine Consultation for Primary Care: Providing specialist opinion and management recommendations to family physicians for complex adult patient cases.
Note: This list represents some of the key services offered by Dr. Warren. 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. Warren'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. Warren's practice is located in the West Oak Trails area within the Glen Abbey West neighborhood of Oakville. The facility is situated within St. Joseph's Hospital, providing convenient access for inpatient and outpatient services. The location offers proximity to GO Transit stations and Ford Motor Company's Canadian headquarters and plant, making it accessible for patients from surrounding regions. Oakville Transit services the area, ensuring easy public transportation options. The facility is wheelchair accessible. Parking is available at the facility.
- How is payment handled for appointments with Dr. Warren? Is it covered by Ontario Health Insurance Plan (OHIP)?
- In ON, medical consultations with specialists like Dr. Warren 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. Warren. 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.
- Why is reviewing multiple medications (polypharmacy) important?
- As people age or develop multiple health conditions, they often take many medications. Polypharmacy increases the risk of side effects, drug interactions, falls, confusion, and non-adherence. A careful review helps ensure each medication is truly necessary, effective, and safe, potentially leading to deprescribing (stopping unnecessary drugs) and simplifying the regimen.
- How long should I expect my appointment to last?
- Initial consultations with Dr. Warren 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.
- How does Dr. Thomas Andrew Warren communicate with my family doctor?
- Clear communication with your referring physician is a priority. Dr. Warren will send a comprehensive consultation letter outlining the assessment findings, diagnosis (if established), and treatment recommendations. This ensures your family doctor is fully informed and can continue to coordinate your overall care effectively.
St. Joseph's Hospital
Rm D2-160, 3075 Hospital Gate
Oakville, ON L6M 1M1
Phone: (905) 844-5346 | Fax: (905) 849-6551
The facility is wheelchair accessible.
Dr. Warren 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/Warren-Thomas-Andrew/0220024-82482