However, in terms of religious ideology, Bulman chose to follow and be identified with Agudath Israel of America, one of Haredi Judaism's largest movements.
At a later stage in his life, Bulman sometimes dressed in the style typical of Gerrer Hasidim, even donning a spodik in his later years, on the Sabbath and holidays.
He was a popular teacher, lecturer, writer, translator of Hebrew language works into English, and builder of Jewish communities in both America and Israel.
In 1996 he founded a Beis Midrash, Nachlas Tzvi, in Telz-stone, named after the writings of Rabbi Samson Raphael Hirsch.
During the final three years of his life he lived in Neve Yaakov, a northern neighborhood of Jerusalem, where he founded Bais Medrash Nachliel, and where Kollel Nachmani was established in his memory.