Walker was elected Coadjutor Bishop of Long Island on the seventh ballot on November 21, 1987. He was consecrated on April 9, 1988 by Presiding Bishop
Edmond L. Browning in the
Cathedral of the Incarnation. After his ordination, he was assigned with the responsibility of ordinations, particularly of women, noting that the diocesan, Bishop Witcher, opposed the ordination of women to the priesthood. Walker ordained Anne Lyndall and Noreen Moody, the first women priests for the Diocese of Long Island in the Cathedral of the Incarnation on 25 January 1989. He succeeded as diocesan in on January 1, 1991 and was installed in his cathedral on January 5. During his episcopacy he worked for the full inclusion of women in the ordained ministry. He retired his post in 2009. == See also ==