After graduation, having no attachment to samsara, he abandoned the temporary benefits of the material world and began his training in the Lomgya Monastery. It is here at the Lomgya Monastery that His Holiness Penam Rinpoche, the supreme head of the Jonang Tradition of Tibetan Buddhism, recognized Tashi Rinpoche as the incarnation of Jetsun Taranatha, a famous scholar and yogi in the history of Tibetan Buddhism. From 1984 to 1991 Rinpoche completed his studies of the doctrine of both historical and recent traditions in the subjects of Sutra and Tantra. During this same period of time, he completed his solitary retreat of 3 years, 1 month and 15 days on the Six-Branch Yoga of the Kalachakra, achieving significant realizations.

In 1991 he came to the United States and formed the Dorje Ling Buddhist Center in Brooklyn, New York, and later formed another Center in Atlanta, Georgia. In October of 1999, Rinpoche was inaugurated as the throne holder of the Jonang Tradition of Tibetan Buddhism at the Zemtong Monastery in Tibet. Many thousands of people attended this blessed event. Because of his kind effort, the 700-year-old tradition of Jonang has taken root in American soil for the first time. He is dedicated to making Dharma available in his home country and abroad. It is with a pure motivation and true compassion that he wishes to benefit others.

In 1996 he established a school and orphanage for children who did not have parents or family to care for them. He also established a home for the elderly where they can receive care needed at this point in their lives. In an effort to preserve the Jonang Tradition, he built a large stupa and helped rebuild the monastery in Gandhi, Golok, and has preserved and reprinted many traditional texts and teachings so they may be available for the people in his homeland.
In an effort to make the Jonang Tradition and its teachings available to present day students, he is dedicated to caring for and developing the spiritual awareness of monks, nuns, and lay students from his homeland in the East to his new home in the West. May his enlightened activities continue to bring great waves of benefit, peace and happiness to sentient beings everywhere. Tashi Rinpoche is often moved to create poetry to express his meditational experiences and his understanding of the nature of reality. Following is one of his poems.