Complex sentence: He attended school in New Delhi and graduated from AIIMS, New Delh in MBBS (Dermatology) in 1969, where he also obtained his post graduate degree (M.D.) in Dermatology and Venereology in 1975.
Split into simpler sentences: He attended school in New Delhi and graduated from AIIMS, New Delh in MBBS (Dermatology) in 1969. He continued in AIIMS, New Delhi to obtain his post graduate degree (M.D.) in Dermatology and Venereology in 1975.