Valeria Grijalva Cobos, MD

Helen He, MD is a Dermatology provider with Mount Sinai Health System, treating patients in the New York area. Dr. He is committed to compassionate, coordinated care that supports patients throughout the diverse communities we serve.

Jesse Lewin, MD is a Dermatology provider with Mount Sinai Health System, treating patients in the New York area. Dr. Lewin is committed to compassionate, coordinated care that supports patients throughout the diverse communities we serve.

Dr. Christina Dai is a board-certified dermatologist and an Assistant Professor of Dermatology at the Hofstra Northwell School of Medicine. Dr. Dai graduated from New York University with a Bachelor of Arts in Biochemistry and a minor in Child and Adolescent Mental Health Studies. During her medical school education at University of Central Florida College of Medicine, Dr. Dai was inducted into the Alpha Omega Alpha Honor Medical Society for excellence in scholarly achievement and professional conduct. She completed her dermatology training and chief residency at the Mayo Clinic in Jacksonville, Florida where her research was dedicated to investigating cutaneous lymphomas and transplant dermatology. Dr. Dai is devoted to delivering excellent and comprehensive evidence-based care to patients of all ethnicities and skin types. She has extensive experience in treating a broad spectrum of skin conditions, ranging from common disorders such as acne, eczema, and psoriasis to complex dermatological conditions requiring multidisciplinary care. In addition to practicing medical dermatology, she is also able to perform a variety of medical and cosmetic procedures including, but not limited to, surgical excisions, neurotoxin (e.g Botox) and filler injections, and fractional resurfacing lasers to treat signs of skin aging, hyperpigmentation, and scars. Dr. Dai is a member of several dermatological societies including the American Academy of Dermatology, the American Society for Dermatologic Surgery, and the Mayo Clinic O Leary Society. She sees adult patients and children above the age of three years old. Her care philosophy prioritizes building trust and rapport with her patients in order to address their unique concerns and improve their quality of life.