Signature
Providers
100% Physician-Owned Practice
Signature Dermatology was founded in 2009 and is 100% owned by board-certified dermatologists, co-founders Marya Cassandra, DO and Andrea Costanza, DO. We are steadfast in our commitment to remain a physican-owned private practice in order to provide the best possible patient care experience while keeping healthcare costs down. By reinvesting in our team members, our clinics, and our patient interactions, we are completely focused on one goal - a patient-centered practice. We invite you to read about our providers at Signature Dermatology below.
100% Physician-Owned Practice
Signature Dermatology was founded in 2009 and is 100% owned by board-certified dermatologist co-founders Marya Cassandra, DO and Andrea Costanza, DO. We are steadfast in our commitment to remain a physican-owned private practice in order to provide the best possible patient care experience while keeping healthcare costs down. By reinvesting in our team members, our clinics, and our patient interactions, we are completely focused on one goal. A patient-centered practice. We invite you to read about our providers at Signature Dermatology below.
DR. KATIE WANG, DO
Board Certified Dermatologist
Katie Wang, D.O. completed her dermatology residency at OhioHealth Riverside Methodist Hospital in Columbus, where she served as Chief Resident. She graduated Cum Laude with a degree in Osteopathic Medicine from Kansas City University of Medicine and Biosciences and also completed her internship year in Preliminary Medicine at Riverside Methodist Hospital. She subsequently completed a clinical research fellowship at SUNY Downstate and Mount Sinai Hospital in New York City, where she used noninvasive imaging devices to diagnose and monitor cutaneous malignancies, inflammatory conditions, and therapeutic response. She is interested in medical, surgical, and cosmetic dermatology. In her spare time, she enjoys traveling, cooking, and spending time with her husband and two young children.
Board Certified Dermatologist
Katie Wang, D.O. completed her dermatology residency at OhioHealth Riverside Methodist Hospital in Columbus, where she served as Chief Resident. She graduated Cum Laude with a degree in Osteopathic Medicine from Kansas City University of Medicine and Biosciences and also completed her internship year in Preliminary Medicine at Riverside Methodist Hospital. She subsequently completed a clinical research fellowship at SUNY Downstate and Mount Sinai Hospital in New York City, where she used noninvasive imaging devices to diagnose and monitor cutaneous malignancies, inflammatory conditions, and therapeutic response. She is interested in medical, surgical, and cosmetic dermatology. In her spare time, she enjoys traveling, cooking, and spending time with her husband and two young children.
DR. JAMES DUNCAN, MD
Board Certified Dermatologist and Fellowship-Trained Mohs Micrographic and Reconstructive Surgeon
Dr. Duncan graduated from the University of Utah prior to attending The Ohio State University College of Medicine where he graduated Magna Cum Laude. While at Ohio State, he was inducted into the prestigious Alpha Omega Alpha academic honor society and received the Clinical Excellence Award. He completed his internship at Riverside Methodist Hospital prior to his dermatology residency at the University of Alabama at Birmingham (UAB) where he was selected to serve as Chief Resident. He then completed a fellowship in Mohs surgery at UAB where he extensively trained in the management of advanced skin cancers and reconstructive surgery, performing over 1,300 cases. He has over fifteen publications across dermatology journals and received the esteemed Tromovitch award from the American College of Mohs Surgery for outstanding research during fellowship. Dr. Duncan has interests in the prevention and management of skin cancer as well as a variety of medical dermatologic conditions and cosmetics. He is dedicated to helping his patients achieve the highest possible cure rate and best aesthetic and reconstructive outcomes through Mohs surgery. In his free time, he enjoys basketball, outdoor activities, watching Ohio State football and TV, and spending time with his wife.
Board Certified Dermatologist and Fellowship-Trained Mohs Micrographic and Reconstructive Surgeon
Dr. Duncan graduated from the University of Utah prior to attending The Ohio State University College of Medicine where he graduated Magna Cum Laude. While at Ohio State, he was inducted into the prestigious Alpha Omega Alpha academic honor society and received the Clinical Excellence Award. He completed his internship at Riverside Methodist Hospital prior to his dermatology residency at the University of Alabama at Birmingham (UAB) where he was selected to serve as Chief Resident. He then completed a fellowship in Mohs surgery at UAB where he extensively trained in the management of advanced skin cancers and reconstructive surgery, performing over 1,300 cases. He has over fifteen publications across dermatology journals and received the esteemed Tromovitch award from the American College of Mohs Surgery for outstanding research during fellowship. Dr. Duncan has interests in the prevention and management of skin cancer as well as a variety of medical dermatologic conditions and cosmetics. He is dedicated to helping his patients achieve the highest possible cure rate and best aesthetic and reconstructive outcomes through Mohs surgery. In his free time, he enjoys basketball, outdoor activities, watching Ohio State football and TV, and spending time with his wife.
DR. JESSICA HOY, DO
Board Certified Dermatologist
Jessica Hoy, DO, FAAD is a board-certified dermatologist and dermatopathologist. She obtained a Bachelor of Arts degree from Miami University in 2009 graduating Cum Laude. She then earned her Doctorate of Osteopathy in 2013 from Ohio University Heritage College of Osteopathic Medicine. Dr. Hoy completed dermatology residency at OhioHealth O’Bleness Hospital in 2017 where she served as chief resident, followed by a dermatopathology fellowship at Cleveland Clinic in 2018. She is committed to teaching dermatology residents and students, serving as the OhioHealth Dermatology Residency program’s Director of Dermatopathology. Dr. Hoy is a native to Columbus, Ohio and excited to offer dermatologic care to the community in which she was raised. She aims to provide a comprehensive, evidence-based approach to medical, surgical and cosmetic dermatologic concerns and believes the highest quality of care is achieved through shared-decision making. Her clinical interests include early detection of skin cancer, dermoscopy and acne. In her free time, she enjoys staying active with her husband and three sons.
Board Certified Dermatologist
Jessica Hoy, DO, FAAD is a board-certified dermatologist and dermatopathologist. She obtained a Bachelor of Arts degree from Miami University in 2009 graduating Cum Laude. She then earned her Doctorate of Osteopathy in 2013 from Ohio University Heritage College of Osteopathic Medicine. Dr. Hoy completed dermatology residency at OhioHealth O’Bleness Hospital in 2017 where she served as chief resident, followed by a dermatopathology fellowship at Cleveland Clinic in 2018. She is committed to teaching dermatology residents and students, serving as the OhioHealth Dermatology Residency program’s Director of Dermatopathology. Dr. Hoy is a native to Columbus, Ohio and excited to offer dermatologic care to the community in which she was raised. She aims to provide a comprehensive, evidence-based approach to medical, surgical and cosmetic dermatologic concerns and believes the highest quality of care is achieved through shared-decision making. Her clinical interests include early detection of skin cancer, dermoscopy and acne. In her free time, she enjoys staying active with her husband and three sons.
Hilliard
P: (614) 777-1200
F: (614) 777-1294
Monday-Friday 8:00AM-5:00PM
3853 Trueman Court
Hilliard, OH 43026
Lewis Center
P: (614) 777-1200
F: (614) 777-1294
Monday-Thursday 8:00AM-5:00PM
Friday 7:00AM-3:00PM
25 Hidden Ravines Drive
Powell, OH 43065
@Signature Dermatology
