The Embassy of India, Bangkok, issues an emergency number, (+66 618819218), for Indian nationals in Thailand, which they can use in case of any emergency.
"After powerful earthquake tremors recorded in Bangkok and in other parts of Thailand, the Embassy is closely monitoring the situation in coordination with the Thai authorities. So far, no untoward incident involving any Indian citizen has been reported...All members of the Indian Embassy in Bangkok and Consulate in Chiang Mai are safe."