Our Expert Physicians
Dr. Thomas Kohn
Dermatologist & Dermatologic Surgeon | Founder, CTC International
Dr. Thomas Kohn is a dermatologist and dermatologic surgeon with decades of experience in medical, surgical and cosmetic dermatology. Founder of CTC International in 1981, his career has included advanced training in dermatologic surgery, Mohs surgery, hair transplantation and laser surgery, as well as teaching, research and international lecturing.
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Medical Dermatology · Dermatologic Surgery · Mohs Surgery · Hair Restoration · Cosmetic Dermatology
Leila Cattelan, MD, FRCPC
Board-Certified Dermatologist | Medical & Aesthetic Dermatology
Dr. Leila Cattelan is a board-certified dermatologist whose practice encompasses both medical and aesthetic dermatology. Born and raised in Montreal, she completed her undergraduate degree and medical training at McGill University, followed by a five-year residency in dermatology.
Her clinical and academic interests include skin cancer diagnosis and management, aesthetic dermatology and regenerative techniques. Dr. Cattelan has authored more than 18 peer-reviewed manuscripts and has presented her research nationally and internationally. She brings a warm, thoughtful and evidence-guided approach to patient care, with an emphasis on personalized treatment plans tailored to each patient’s individual needs and goals.Â
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Medical Dermatology · Aesthetic Dermatology · Skin Cancer · Regenerative Aesthetics
Arieh Gomolin, MD
Dermatologist | Mohs Surgeon & Dermatologic Surgeon
Dr. Arieh Gomolin completed his medical training and dermatology residency at McGill University in Montreal, followed by fellowship training in Mohs Micrographic Surgery in Texas under the mentorship of Dr. Leonard H. Goldberg.
His practice focuses on skin cancer management, Mohs surgery and dermatologic surgery, with subspecialized expertise in facial reconstructive surgery. Dr. Gomolin also holds an appointment with the McGill University Department of Medicine at the Jewish General Hospital.
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Skin Cancer · Mohs Surgery · Dermatologic Surgery · Facial Reconstruction
Additional Clinical Services
Psychology & Personal Development
Jonathan Ohayon, MS (2), PPCC
Professor of Psychology | Certified Life Coach
Jonathan Ohayon has been a Professor of Psychology at Dawson College since 2009 and is a trained guidance counselor and PPCC Certified Life Coach. His areas of expertise include positive psychology, mental health counseling, psychometric assessment and career counseling.
His approach focuses on identifying and developing an individual’s strengths and resilience. Drawing on the principles of positive psychology, his Life & Wellness Coaching helps clients navigate personal and professional challenges, develop their potential and work toward greater well-being and personal growth.
Positive Psychology · Life & Wellness Coaching · Career Counseling · Personal Development
The Patient-First Philosophy
We believe that medical excellence begins with a deep understanding of your unique skin health. Our physician-led approach ensures that every treatment, from advanced skin cancer screening to sophisticated cosmetic procedures, is guided by clinical precision and a commitment to your long-term well-being.