Wild Bill:
The body is referred to repeatedly by the wise as that clothing which we put on and take off. This is an apt and near-perfect description.
As a physician, you know the body is material trinity from its beginnings as endo-, meso-, ecto- through the chain of evolution (**** Latin/Greek, convert to Northern European: "turning out") to gut, muscle, nerve manifesting in abdomen, thorax, head.
Men of Science, probably including yourself, seek ceaselessly to find the seat of consciousness within this material, but that has always been fruitless, and always will be - and the reason is that consciousness is not "there" and so can not be found.
We measure electricity, gravity, magnetism - but we can not find them as substance and so we resort to saying they result from, or "are", something we call "fields".
The "I" which so many of us experience as a little man in our heads, peering out through the eyes like some driver in a robotic car, is not Material, not Energetic.
Those Scientists who call themselves (astro-)physicists now conceive that our Universe is made up of 99% "dark" matter, "dark" energy - and they do so because their search is as fruitless as that for the seat of Consciousness. It is not only not "where" they are looking, it is where they cannot look, for the simple reason that our perception of Universe is made through the media of our bodies, and they do not have the ability to perceive anything other than Matter and Energy because they are of Matter and Energy.
Consciousness is not Material - it is in, but not of, Matter; it is in, but not of, Energy.
The "I" that in every manner of thinking inhabits your body - and mine, and those of every living thing in this Universe - is in, but not of, the Body.
The "I" that you know of yourself is - quite simply - never going to "die". Not soon when that body, which you have put on like a garment, ceases to be, and not ever.
Those whose bodies continue to sense Universe through Matter and Energy will feel sadness when we no longer perceive you through the medium of your material body. But whoever seeks in the right ways can, and will, come to know that the "I" that is you continues forever to Be.