About
With extensive experience in Internal Medicine and Geriatric Care, Dr. Nagib Masaud A Khalifa serves as a trusted medical specialist. Practicing in Chatham, ON, he provides comprehensive care in Internal Medicine and Geriatric Care to adults, including seniors, with a warm and community-focused approach. His practice adheres to the high standards set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring that each patient receives safe, ethical, and personalized medical attention.
Dr. Khalifa graduated with a Medical Degree from the University of Tripoli Faculty of Medicine in 1999 (Libya). He has completed extensive post-graduate medical training, including specialized residencies and certifications in internal medicine and geriatric care. His ongoing commitment to professional development ensures he remains current with the latest advances in adult and senior healthcare.
Driven by a warm, community-oriented philosophy, Dr. Khalifa is dedicated to building trusting relationships with his patients and their families. He speaks Arabic and English fluently, fostering effective communication and cultural understanding, which are central to his patient-centered approach in serving the Chatham community.

Dr. Khalifa provides expert care for adults with a wide range of medical conditions, including:
Endocrine & Metabolic Disorders
- Osteoporosis & Metabolic Bone Disease: Diagnosis, risk assessment, and treatment strategies for conditions affecting bone strength and metabolism.
- Thyroid Disorders: Management of hypothyroidism, hyperthyroidism, thyroid nodules, and other thyroid conditions.
- Adrenal Gland Disorders: Diagnosis and management of conditions affecting the adrenal glands, such as adrenal insufficiency.
Management of Chronic Diseases
- Chronic Kidney Disease (CKD): Monitoring kidney function, managing complications (anemia, bone disease, electrolytes), and strategies to slow disease progression.
- Dyslipidemia (High Cholesterol): Assessment and management of abnormal lipid levels through lifestyle advice and medication to reduce cardiovascular risk.
- Diabetes Mellitus (Type 1 & 2): Comprehensive management including glucose control strategies, complication prevention, and patient education.
Select Infectious & Inflammatory Conditions
- Evaluation of Inflammatory Markers: Investigating elevated inflammatory markers (like ESR or CRP) to identify potential underlying systemic 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.
Dr. Khalifa 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.
- Medication Review and Optimization (Deprescribing): Systematic review of all medications (polypharmacy) to ensure appropriateness, minimize side effects and interactions, and deprescribe unnecessary drugs.
- Driving Safety Assessment Consultation (Medical): Evaluating medical fitness to drive in older adults, considering cognitive, sensory, and physical factors.
- Perioperative Medical Consultation: Assessing and managing medical risks (e.g., cardiac, respiratory) for patients undergoing surgery to ensure safety and optimize post-operative recovery.
- Geriatric Psychiatry Liaison Support: Assessing and managing mood disorders (like depression, anxiety) and behavioral changes often associated with dementia or other conditions in older adults.
- Advance Care Planning Discussions: Facilitating conversations about future healthcare preferences and goals of care, including discussions about powers of attorney for personal care.
Note: This list represents some of the key services offered by Dr. Khalifa. 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. Khalifa'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. Khalifa's practice is situated in the central area of Chatham, ON, easily accessible from surrounding neighborhoods and close to local points of interest such as the downtown core and community centers. The location is well-served by public transit options, making it convenient for patients traveling from various parts of the city and nearby communities. The facility is wheelchair accessible. Parking is available at the facility.
- How is payment handled for appointments with Dr. Khalifa? Is it covered by Ontario Health Insurance Plan (OHIP)?
- In ON, medical consultations with specialists like Dr. Khalifa 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. Khalifa. 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 the appointment cancellation policy?
- We understand that unforeseen circumstances arise. If you need to cancel or reschedule your appointment, please provide at least 24-48 hours notice so we can offer the time slot to another patient waiting for consultation. Failure to provide sufficient notice may result in a missed appointment fee (if applicable per clinic policy). Please contact the office directly to make changes.
- What happens after the initial consultation?
- After your assessment, Dr. Khalifa 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. Khalifa 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.
- Is the focus mainly on diseases or also on daily function?
- While diagnosing and managing diseases like Syncope (Fainting) Evaluation or Thyroid Disorders is crucial, Dr. Khalifa also places significant emphasis on maintaining or improving daily function and quality of life, especially for older adults. The goal is often to help patients remain as independent and active as possible, addressing issues like mobility, self-care, and participation in meaningful activities.
- What are typical wait times for an appointment?
- Wait times for specialist appointments can vary significantly depending on the urgency of the referral, the volume of requests, and Dr. Khalifa's availability. Our office prioritizes referrals based on medical need. We strive to see patients as promptly as possible and will contact you once the referral is processed to schedule an appointment. You can inquire about approximate wait times when booking.
2nd Floor, 72 Victoria Avenue
Chatham, ON N7L 3A1
Phone: (519) 397-0790 | Fax: (519) 397-5535
The facility is wheelchair accessible.
Dr. Khalifa 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/Khalifa-Nagib-Masaud-A/0220647-82366