I am telling you the contact details of some good PG course in Diabetology Colleges in India:

Govt. Medical College
#88 College Street
Kolkata, West Bengal
(033) 24512644

Vardhman Mahavir Medical College (VMMC) Safdarjung Hospital Campus
Delhi, Delhi
(011) 26165060, 26165032, 26168336, 26190763, 26707114
(011) 26163072, 26194690

National Institute Of Medical Sciences
National Institute Of Medical Sciences, Jaipur, Rajasthan, India ‎
+91 98 29 062023 (Mobile) ‎

Madras Medical College
Poongavanapuram, Chennai, Tamil Nadu 600003, India ‎

Some other Medical Colleges

All India Institute of Medical Sciences(AIIMS) Ansari Nagar, Delhi 011-26594622

Christian Medical College, Vellore (CMC, Vellore) Vellore 0416-2284202

Armed Forces Medical College(AFMC) Sholapur Road, Pune 020-26306000/ 26802216/26306055

JIPMER Dhanvantri Nagar, Puducherry 0413-2272901

Maulana Azad Medical College(MAMC) Bahadur Shah Zafar Marg, Delhi 011-23231478/26863889

Lady Hardinge Medical College(LHMC) C- 604, Shivaji Stadium Bus Terminal Co. Place, Shaheed Bhagat Singh Marg, Delhi 011-23363728

Madras Medical College (Chennai Medical College) Periyar Evr Salai, Park Town, Chennai 044-25305238

Grant Medical College J J Road,Byculla, Mumbai 022-23735555

Kasturba Medical College(KMC) Madhav nagar,Manipal Post, Manipal 0820-2922367/ 2571114

Sri Ramachandra Medical College & Research Institute 1,Ramachandra Nagar, Porur, Chennai 044-4828027-29/31-33