Kashif Irshad, MD, MSc, FRCSC
Lifespire Medical Director & Co-Founder · Lifespire
Thoracic and bariatric surgeon leading Lifespire's biomarker-driven prevention model as medical director and co-founder
About
Kashif Irshad is Lifespire's Medical Director and Co-Founder, with a clinical background that runs through surgery, obesity medicine, and functional medicine. He trained at McGill, McMaster, and the University of Pittsburgh Medical Centre, is FRCSC-certified in general surgery and thoracic surgery, and serves as Chief of Thoracic Surgery at William Osler Health System. At Clinic360, he has led bariatric surgery work with more than 3,000 stomach surgeries performed. He is also a diplomate of the American Board of Obesity Medicine and a member of the Institute for Functional Medicine.
What to Know
Signature approach
Irshad shapes Lifespire's diagnostic and longevity protocols from an upstream-prevention lens. The program reads 150+ biomarkers across cardiovascular, metabolic, hormonal, inflammatory, and neurocognitive systems, then turns the data into a roadmap across nutrition, supplementation, hormone and metabolic priorities, and movement. Retesting lets the plan adjust to the member's biology over time.
What sets them apart
- Surgical depth. FRCSC certification in both thoracic and general surgery gives him a heavier clinical background than many longevity-clinic medical directors.
- Metabolic-health layer. ABOM diplomate status and IFM membership connect the surgical background to obesity, metabolism, and prevention.
- High-volume operative experience. His work at Clinic360 and William Osler gives Lifespire a prevention thesis grounded in serious downstream disease, not only wellness optimization.
Before You Book
- Ask about direct access. Irshad is Medical Director and Co-Founder while also holding roles at William Osler and Clinic360, so member care may route through the broader Lifespire clinical team.
- Expect application-based access. Engagement runs through Lifespire's private membership process rather than open online scheduling.
- Languages. His Ontario profile lists English, French, Punjabi, and Urdu.
Expertise
Focus areas
Patient types
Credentials
Education
MD
McGill University Faculty of Medicine (1998)
MSc, Experimental Surgery
McGill University
Board certifications
Thoracic Surgery (FRCSC)
Royal College of Physicians and Surgeons of Canada
Canadian specialty board certification in thoracic surgery - the lungs, esophagus, and chest cavity. Issued June 2005.
General Surgery (FRCSC)
Royal College of Physicians and Surgeons of Canada
Canadian specialty board certification in general surgery. Issued June 2003.
Residency
General Surgery
McGill University
Thoracic Surgery
McMaster University
Fellowship
Minimally Invasive Thoracic Surgery
University of Pittsburgh Medical Centre
Additional certifications
Diplomate, American Board of Obesity Medicine (ABOM)
American Board of Obesity Medicine
Recognized expertise in the medical management of obesity and metabolic disease, beyond surgical training.
Member, Institute for Functional Medicine (IFM)
Institute for Functional Medicine
Training in the functional-medicine framework that informs Lifespire's preventive, root-cause approach.
Years in practice
20
Affiliations
Thought Leadership
Notable Collaborators
- William Osler Health System · Chief, Division of Thoracic Surgery - concurrent role since 2014, on staff since 2006
- Clinic360 (Toronto) · Medical Director of Bariatric Surgery - concurrent private bariatric practice
- McMaster University · Assistant Clinical Professor, Department of Surgery - academic appointment since 2006
- Dr. James D. Luketich, UPMC · Fellowship mentor in minimally-invasive thoracic surgery; collaborated on a 2008 live telesurgery event at Brampton Civic Hospital
Other specialists at Lifespire
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