My father recently crossed 60 and he is diabetic. I want to buy health insurance medicliam for him. Please suggest some good plans and their benefits.

You have 2 options

Option 1. Get policy from any insurance company with exclusion of diabetes for 4 years.
Exceptions are- L + T where it will be covered after 2 years Bajaj Allianz Silver Health- where it will be covered after 1 year

Option 2. Get policy from one of the following companies.
(a) Star Health- Diabetic Care: You will have to pay 30% of the claim amount.