Chang Helen Y MD Obstetrics, Gynecology, Laser Surgery is their Medial specialty. They are knowledgeable in the following conditions / disorders: Infertility. Chang Helen Y MD is located on 15525 Pomerado Rd Ste A8 in Poway. They can be reached by phone by calling (858) 485-9822 . They can be reached by calling (858) 485-9822 . They can perform the following procedures / treatments: Laser Surgery. They have a total of 2 reviews, 0 positive reviews and 1 negative review.