Established in 2017, the Tomo Riba Institute of Health and Medical Sciences (TRIHMS) is the first and only government medical college in Arunachal Pradesh. Located in Naharlagun, near the state capital Itanagar, the institute is named after Tomo Riba, the second Chief Minister of the state. Affiliated with Rajiv Gandhi University and recognized by the National Medical Commission (NMC).

The college offers an undergraduate MBBS program with an annual intake of 50 to 100 students, alongside nursing and postgraduate courses. It is integrated with a 500-bedded multi-specialty hospital that provides extensive clinical training and serves as a vital healthcare hub for the local population.

A 5.5-year MBBS program with 4.5 years academic + 1 year internship.

Around ₹1.89 Lakhs to ₹2.19 Lakhs for the entire 5.5-year MBBS program

• Separate multi-story buildings for boys and girls with elevator (lift) access and tiled flooring.
• Lecture Halls & Labs includes digital lecture halls and a dedicated Skill Lab for practical clinical training.
• A massive facility containing over 26,000 books and a wide range of national and international journals. It is typically open from 8:00 AM to 8:00 PM on working days.
• A Multi-Disciplinary Research Unit (MRU) supports faculty and student projects, often in collaboration with other institutes like NERIST.
• A large space used for seminars, cultural fests, and medical conferences.

To get into Tomo Riba Institute of Medical Sciences (TRIHMS) for MBBS, you need to clear NEET UG, pass 10+2 with PCB, meet percentile cutoffs (50th for General, 40th for Reserved), and then participate in online counselling via the Arunachal Pradesh DME/TRIHMS portal or MCC, registering, filling choices, and attending document verification for seat allotment.