Our Teams Mission
At Factor Dermatology, we are dedicated to caring about your skin and protecting your health. Our mission is to provide you with the best skin care, leveraging the latest technology and our extensive expertise to achieve healthier skin for you. Whether it's catching skin cancer early, treating complex dermatological conditions, or simply helping you maintain the best version of your skin, we approach every case with the utmost care and attention.
Our team of experienced and kind dermatologists, led by Dr. Sophia Colantonio and Dr. Genevieve Gavigan is committed to going beyond the hype and delivering results based on evidence. Factor Dermatology is where smart people get smart skin care. We do dermatology differently—by focusing on prevention, early detection, and personalized treatments that align with your unique needs.
Founder
Dr. Sophia Colantonio
Dr. Sophia Colantonio is a dual board-certified dermatologist in Canada and the U.S., practicing at the Ottawa Hospital Civic Campus, where she leads specialized clinics in Patch Testing, Biologics, and Pigmented Lesions. In 2024, she founded Factor Dermatology to provide innovative and accessible community dermatology care. Dr. Colantonio holds a Biology degree from the University of Ottawa, a Master’s in Public Health from Yale, and completed her medical degree and dermatology residency at the University of Ottawa. She has received several awards, including the 2024 Clinician Teacher Award and the 2023 Early Career Volunteer Award. Outside of work, she enjoys family time, Crossfit, and paddleboarding with her two Cavalier King Charles Spaniels.
Dermatologist
Dr. Genevieve Gavigan
Dr. Genevieve Gavigan is a dermatologist specializing in pediatric dermatology, hidradenitis suppurativa, and complex medical dermatology. She earned her medical degree and completed her dermatology residency at the University of Ottawa. An award-winning educator, Dr. Gavigan is dedicated to teaching and mentoring future dermatologists. She focuses on personalized patient care, understanding each individual's unique needs. Outside of work, she balances her career with raising three young children, bringing empathy and practicality to her practice.
Dermatologist
Dr. Gabrielle Veillet-Lemay
Dr. Gabrielle Veillet-Lemay is a distinguished bilingual dermatologist, highly regarded for her expertise in general and cosmetic dermatology. A graduate of the University of Ottawa, Dr. Veillet-Lemay combines clinical excellence with a deeply compassionate, patient-centered approach. In addition to her role at Factor Dermatology, she practices at Montfort Hospital and leads the dermatology clinic at Winchester District Memorial Hospital. Guided by family values of kindness and genuine connection, Dr. Veillet-Lemay is dedicated to providing every patient with exceptional, personalized care that prioritizes their unique needs and well-being.
Dermatologist
Dr. Katherine McDonald
Dr.KatherineMcDonald is a board-certified dermatologist at Factor Dermatology and DermCafé, and leads the dermatology clinic at Revisage Surgical Centre. She earned her medical degree in Ottawa and completed her dermatology residency at the University of Toronto, where she served as co-chief resident and received awards for teaching and mentorship. Known for her warm bedside manner, Dr. McDonald emphasizes patient education and personalized care. She has a special interest in treating acne, rosacea, melasma, and post-inflammatory hyperpigmentation, and offers procedural care for skin cancers and benign lesions, along with aesthetic services for natural, refreshed results.
General Practitioner
Dr. Flavia Sendi-Mukasa
Dr. Flavia Sendi-Mukasa is a family physician with an interest in acne, rosacea, and minor procedures for benign skin conditions. She completed medical school at the University of Toronto, and her family medicine residency at the University of Ottawa. Dr. Sendi-Mukasa has the privilege to work at Somerset West Community Health Centre, providing full scope family medicine care to a diverse patient population. Outside of work, she enjoys spending time with her husband and two young children. She speaks English and French.
Nurse Practitioner
Maddi McFadden
Maddi McFadden is a Nurse Practitioner in Ottawa specializing in cosmetic dermatology, with a focus on Botox treatments. Known for her precision and natural results, she creates personalized treatment plans that enhance natural beauty while maintaining a subtle, refreshed appearance. Maddi’s expertise and warm demeanor have made her a trusted figure in Ottawa’s aesthetic community.