Dhanvantari is the Hindugod of medicine and an avatar of Lord Mahavishnu. He is mentioned in the Puranas as the god of Ayurveda. He, during the Samudramanthan arose from the Ocean of Milk with the nectar of immortality. It is common practice in Hinduism for worshipers to pray to Dhanvantari seeking his blessings for sound health for themselves and/or others, especially on Dhanteras or Dhanwantari Trayodashi. The Indian Government has declared that Dhanwantari Trayodashii Kumara every year would be celebrated as "National Ayurveda Day".
Textual sources
"Ramayana Balakaand" and Bhagavata Purana state that Dhanvantari emerged from the Ocean of Milk and appeared with the pot of amrita during the story of the Samudra Sagara Mathana whilst the ocean was being churned by the Devas and Asuras, using the Mandara mountain and the serpent Vasuki. The pot of Amrita was snatched by the Asuras, and after this event another avatar, Mohini, appears and takes the nectar back from the Asuras. It is also believed that Dhanvantari promulgated the practice of Ayurveda. Of special mention here is the treatise of Dhanvantari-Nighantu, which completely elucidates Dhanvantari's medicinal plants.
Iconography
According to the ancient Sanskrit work Vishnudharamottara, Dhanvantari is a handsome individual and should usually be depicted with four hands, with one of them carrying Amrita, the ambrosia. Dhanvantari is depicted as Vishnu with four hands, holding Shankha, Chakra, Jalauka and a pot containing Amrita. He is often shown with a leech in his hand rather than the scriptures. In ancient texts there are some shlokas devoted to origin of Lord Dhanvantari: ॐ शंखं चक्रं जलौकां दधदमृतघटं चारुदोर्भिश्चतुर्मिः। सूक्ष्मस्वच्छातिहृद्यांशुक परिविलसन्मौलिमंभोजनेत्रम॥ कालाम्भोदोज्ज्वलांगं कटितटविलसच्चारूपीतांबराढ्यम। वन्दे धन्वंतरिं तं निखिलगदवनप्रौढदावाग्निलीलम॥ सूक्ष्मस्वच्छातिहृद्यांशुक परिविलसन्मौलिमंभोजनेत्रम॥
Birthday celebration
His birthday is celebrated by the practitioners of Ayurveda every year, on Dhanteras, two days before Diwali, the Hindufestival of lights. It is also celebrated as National Ayurveda Day in India. The National Ayurveda Day celebrations started since 2016. situated in the Milk City of India, Anand, Gujarat.
Temples in India
Dhanvantari temple in Maharashtra: In Konkan, There is a Dhanvantari temple at Dapoli, District Ratnagiri, Maharashtra. It belongs to Dongare family and is owned and run by Vaidya Aniruddha Dongare. Many devotees from konkan and rest of Maharashtra visit the temple and offer their prayers. There are a few dedicated temples to Dhanvantari in South India especially in Kerala and Tamil Nadu, where ayurveda is highly practised and patronised. The Thottuva Dhanwanthari temple in Kerala is a particularly famous temple, where Lord Dhanvantari's idol is almost six feet tall and facing east. On the right hand the lord holds Amrith and with the left hand the lord holds Atta, Shanku and Chakra. The 'Ekadasi' day celebration, which falls on the same day as the 'Guruvayur Ekadasi' is of special significance. In Tamil Nadu, in the courtyard of Sri Ranganathaswamy Temple, there is a Dhanvantari shrine where daily worship of the deity is performed. In front of this temple there is an engraved stone believed to be from the 12th century. According to the writings on the stone, Garuda Vahana Bhattar, a great ayurvedic physician, established the statue inside the temple. A prasada or theertham, a herbal decoction, is given to the visitors. The shrine is the oldest Dhanvantari shrine in the state. Another Dhanvantari shrine is found in the second precinct of Varadaraja Perumal Temple in Kanchipuram. Dhanvanthari temples in Kerala, Tamil Nadu and Puducherry include:
Sree Dhanwanthari Temple, Maruthorvattom, Cherthala, Kerala
Sree Dhanwanthari Temple, Prayikara, Mavelikara, Alleppey, Kerala
Sree Dhanwanthari Temple Elanthoor, Pathanamthitta, Kerala
Sri Dhanvantri Swamy Sannidhi within the Sanjeevi Vinayakar Temple, JIPMER campus
Shri Aalkkalmanna Dhanwanthari Temple is situated at Eranthod Village, Angadippuram Panchayat, Perintalmanna Taluk of Malappuram District.
There is also Sri Murrari Dhanvantri Moorthi Kshetram temple in kollam district paravur.It belongs to a family called Thundvilla, it is owned and run by the family members itself.People offer prayer for there beloved ones and offer paalpayasam to god.
Shri Dhanvantari Temple, Palluruthy, Kochi, Kerala is a small temple managed by Gowda Saraswath Brahmin Community.