Dr. Negin Mastouri
MD, MSc, CCFP
Negin Mastouri is a family doctor, board certified by the College of Family Physicians of Canada, deeply committed to holistic and wellness-oriented patient care. As a co-founder and co-CEO of the Canadian Endocrine Institute, she leverages her extensive training and passion for lifestyle modification to guide her patients toward healthier and more fulfilling lives. Her leadership is instrumental in guiding the clinic’s strategic direction.
With over two decades of experience in medicine, Dr. Mastouri completed her residency at the prestigious University of Toronto and holds a clinical fellowship in Hospital Medicine. A Fellow in Metabolic and Nutritional Medicine and a member of the American Academy of Anti-Aging Medicine, she employs a comprehensive approach to healthcare. Dr. Mastouri focuses on lifestyle medicine, which involves using evidence-based lifestyle interventions to help manage weight, combat obesity, and prevent chronic health conditions.
She also addresses menopause management and aesthetic medicine, dedicating her practice to helping her clients achieve their best selves through personalized, preventive, and predictive care. Additionally, she enriches the medical community as an Assistant Professor at McMaster University, where she shares her knowledge and experience with the next generation of medical professionals. Dr. Mastouri practices family medicine at a separate office in West Toronto where she continues to provide comprehensive medical care to her patients.
Dr. Negin Mastouri
MD, MSc, CCFP
Negin Mastouri is a family doctor, board certified by the College of Family Physicians of Canada, deeply committed to holistic and wellness-oriented patient care. As a co-founder and co-CEO of the Canadian Endocrine Institute, she leverages her extensive training and passion for lifestyle modification to guide her patients toward healthier and more fulfilling lives. Her leadership is instrumental in guiding the clinic’s strategic direction.
With over two decades of experience in medicine, Dr. Mastouri completed her residency at the prestigious University of Toronto and holds a clinical fellowship in Hospital Medicine. A Fellow in Metabolic and Nutritional Medicine and a member of the American Academy of Anti-Aging Medicine, she employs a comprehensive approach to healthcare. Dr. Mastouri focuses on lifestyle medicine, which involves using evidence-based lifestyle interventions to help manage weight, combat obesity, and prevent chronic health conditions.
She also addresses menopause management and aesthetic medicine, dedicating her practice to helping her clients achieve their best selves through personalized, preventive, and predictive care. Additionally, she enriches the medical community as an Assistant Professor at McMaster University, where she shares her knowledge and experience with the next generation of medical professionals. Dr. Mastouri practices family medicine at a separate office in West Toronto where she continues to provide comprehensive medical care to her patients.
Where Artistry Meets Medical Precision
At the Canadian Endocrine Institute, cosmetic medicine is approached as both a science and an art. With over a decade of experience in aesthetic medicine, Dr. Negin Mastouri blends clinical expertise, anatomical precision, and artistic vision to deliver refined, natural-looking results.
A practicing physician and trained artist, Dr. Mastouri is recognized for her exceptional eye for detail and facial harmony. She has also trained numerous physicians, nurses, and dentists across Canada in cosmetic injection techniques, and continues to teach and mentor health professionals in the field of aesthetic medicine.
Cosmetic services are not covered by OHIP
Our Cosmetic Services
Neuromodulator Injections (Botulinum Toxin Type A)
Dr. Mastouri provides customized treatments using all Health Canada-approved neuromodulators, including Botox® (onabotulinumtoxinA), Dysport®, Xeomin®, and Nuceiva™. These are used to:
- Soften forehead lines, frown lines, and crow’s feet
- Improve facial symmetry and refine expression
- Treat jaw tension, teeth grinding (masseter hypertrophy), and neck bands
- Manage medical concerns such as chronic migraines and excessive sweating (hyperhidrosis)
Results appear in 3–10 days and typically last 3–6 months.
Dermal Fillers for Facial Balance & Volume
Using premium products such as Juvéderm® and Teosyal®, Dr. Mastouri restores volume and enhances symmetry in:
- Cheeks, chin, jawline, and lips
- Under-eye hollows (tear troughs)
- Areas of facial imbalance or asymmetry
Her goal is to enhance—not alter—your natural features through subtle, artistic correction.
Surgical Mole Removal
For patients with benign moles causing cosmetic concern or irritation, Dr. Mastouri offers in-office surgical excision or electrocautery, depending on location and depth. Suspicious moles can be sent for histopathology. The procedure is quick, safe, and designed to minimize scarring.
Skin Tag Removal
Skin tags can be removed quickly and comfortably using electrocautery or minor surgical techniques, often during a single visit. Dr. Mastouri ensures a clean result with minimal downtime and cosmetic precision.
What to Expect
Your journey begins with a comprehensive consultation where Dr. Mastouri evaluates your goals, anatomy, and treatment options to design a customized plan. Whether you’re seeking subtle refinement or medical treatment, your care is rooted in precision, safety, and individualized artistry.
From wrinkle reduction to facial balancing, Dr. Mastouri’s approach reflects her dual passion for medicine and aesthetics—offering patients results that are elegant, confident, and completely their own.
Dr. Negin Mastouri
MD, MSc, CCFP
Negin Mastouri is a family doctor, board certified by the College of Family Physicians of Canada, deeply committed to holistic and wellness-oriented patient care. As a co-founder and co-CEO of the Canadian Endocrine Institute, she leverages her extensive training and passion for lifestyle modification to guide her patients toward healthier and more fulfilling lives. Her leadership is instrumental in guiding the clinic’s strategic direction.
With over two decades of experience in medicine, Dr. Mastouri completed her residency at the prestigious University of Toronto and holds a clinical fellowship in Hospital Medicine. A Fellow in Metabolic and Nutritional Medicine and a member of the American Academy of Anti-Aging Medicine, she employs a comprehensive approach to healthcare. Dr. Mastouri focuses on lifestyle medicine, which involves using evidence-based lifestyle interventions to help manage weight, combat obesity, and prevent chronic health conditions.
She also addresses menopause management and aesthetic medicine, dedicating her practice to helping her clients achieve their best selves through personalized, preventive, and predictive care. Additionally, she enriches the medical community as an Assistant Professor at McMaster University, where she shares her knowledge and experience with the next generation of medical professionals. Dr. Mastouri practices family medicine at a separate office in West Toronto where she continues to provide comprehensive medical care to her patients.
Dr. Negin Mastouri
MD, MSc, CCFP
Negin Mastouri is a family doctor, board certified by the College of Family Physicians of Canada, deeply committed to holistic and wellness-oriented patient care. As a co-founder and co-CEO of the Canadian Endocrine Institute, she leverages her extensive training and passion for lifestyle modification to guide her patients toward healthier and more fulfilling lives. Her leadership is instrumental in guiding the clinic’s strategic direction.
With over two decades of experience in medicine, Dr. Mastouri completed her residency at the prestigious University of Toronto and holds a clinical fellowship in Hospital Medicine. A Fellow in Metabolic and Nutritional Medicine and a member of the American Academy of Anti-Aging Medicine, she employs a comprehensive approach to healthcare. Dr. Mastouri focuses on lifestyle medicine, which involves using evidence-based lifestyle interventions to help manage weight, combat obesity, and prevent chronic health conditions.
She also addresses menopause management and aesthetic medicine, dedicating her practice to helping her clients achieve their best selves through personalized, preventive, and predictive care. Additionally, she enriches the medical community as an Assistant Professor at McMaster University, where she shares her knowledge and experience with the next generation of medical professionals. Dr. Mastouri practices family medicine at a separate office in West Toronto where she continues to provide comprehensive medical care to her patients.
