Dr. Nisco has practiced orthodontics in Fountain Valley since 1986 and in Lake Arrowhead since 1988. He was born in Massachusetts and moved to Fountain Valley in 1971.  Dr. Nisco graduated from UC, Irvine with a degree in Biology, received his Doctorate of Dental Surgery from the UCLA School of Dentistry, and his Orthodontic Specialty training at the University of Connecticut.

Dr. Nisco is a Diplomate of the American Board of Orthodontics, a member of the Cleft and Craniofacial Team at CHOC, and belongs to the American Dental Association, California Dental Association and American Association of Orthodontists. Dr. Nisco maintains a part time faculty appointment at the UCLA School of Dentistry since 1986, where he teaches biomechanics to the residents and dental students.

Dr. Greg is a board-certified orthodontist practicing in Fountain Valley, CA and Roseville, MI. He is a true Bruin, having earned his residency certificate, doctoral degree, masters and bachelors degree at UCLA. During residency, he served as chief resident and worked to implement his expertise in technology with patient care, and as such has been advancing orthodontic treatment planning and therapy by utilizing 3D technology. In conjunction to his clinical education, Dr. Asatrian is a prolific researcher in tissue engineering, authoring over 30 peer-reviewed journals/books and presenting at over 100 meetings. He continues to educate the dental and orthodontic community as a lecturer are at domestic and international conferences.