Ayelet Mizrachi-Jonisch, MD is a board-certified physician, specializing in Dermatology. With an office conveniently located in Katonah, NY, Dr. Mizrachi-Jonisch provides expert medical and cosmetic skin care for adults and children. Whether you need treatment for a skin condition or are seeking healthier, younger-looking skin, we can help. Optum dermatologists specialize in treating acne, alopecia, eczema, skin cancer, pediatric dermatology conditions, lentigo, psoriasis and much more. Our team also provides a range of diagnostic testing and treatment services including skin biopsies, Botox, chemical peel, Juvederm, patch testing and more.