I am an occupational therapist; I specialize in geriatrics, and safety with home functioning. I am part of a Senior Diagnostic Clinic that assesses older adults for their health, functioning, ability to care for themselves, memory, etc. I would highly recommend the following to give everyone more peace of mind:
1. Obtain a geriatric assessment, if there is a center near your father. Usually there is a team of a nurse, geriatric physician, social worker, and sometimes a PT or occupational therapist.
2. Have a Lifeline emergency button system set up. Then in an emergency of any kind, he can just push a button and help(EMS, family, neighbor, whatever you want) is alerted.
3. If he was recently ill, inquire into home OT or PT to assess home safety and functioning.
4. Contact the local Senior Services to inquire about local resources. Some people qualify for home health aides, chore services, errands.
5. Do they have durable power of attorneys set up, including health care? If not make sure that gets done, along with an advanced directive regarding your parents wishes for health care.
Hope that helps! Just because you live a distance away doesn't mean you can't be an advocate for your father. Feel free to write me with any questions.