Deities According to Function (Buddhist)
Subjects, Topics & Types:
 Tibetan Medicine
 Tantric Medicine (substances)
 Tantric Healing (meditation, mantra, visualization)
 Yantra Yoga
 Long Life Deities
 Purification Deities
 Cleansing Deities
 Healing Deities
- Health, Healing & Longevity Deities
- Tibetan Medicine Glossary
There are deities and categories of deities for confession, purification, cleansing, healing in general, healing specific illnesses, naga illness, astrological illness, contagion, long-life, and immortality.
Vajrasattva is the principal Vajrayana deity for the purification of moral and ethical faults. For specific defilements and sickness there is also a wide range of specialized deities. Some deities are for contagious disease and others for non-contagious.
The subject of Tantric healing traditionally (not Tibetan Medicine) has two broad distinctions which overlap in many ways:  Purification and  Healing. These can further be sub-divided into the Four Activities of  Peaceful,  Increasing  Powerful and  Wrathful.
Jeff Watt 5-2000 [updated 6-2017, 2-2020]
(The images below are only a selection of examples from the links above).