OP, if you medical need is for a relatively small load, there are several suppliers of inverter based generators (typically 1 kw to 3 or 4 kW), the advantage is that they are very quite. I used on up north, and you had to walk up to the unit to hear it running. These typically cost twice as much as the same size conventional (aka noisy) units. Also, you will need a transfer switch for your critical circuits. These will not run you A/C, but you should be able to run the refrigerator, a TV, and your medical devices.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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