Joshi started his career by joining the faculty of the Seth G.S. Medical College and KEM Hospital at their endocrinology department. Later, he moved to the Grant Medical College and Sir Jamshedjee Jeejeebhoy Group of Hospitals as a faculty member. He is now working at Lilavati Hospital and Research Centre, Mumbai, as the Consultant Endocrine and Metabolic Physician[citation needed] and has private practice at Joshi Clinic in the city. He also works as consultant endocrinologist at Bhatia Hospital, Mumbai and serves as visiting faculty at various Indian and international universities.