Are the physicians a group? No. Each physician has a separate practice. Each physician sees his own patients and practices independently of the others. Each physician uses his independent medical judgement in providing you care. The physician seeing you is alone responsible for the medical care he provides you. The office space and other expenses are shared to provide you with the best and most cost-effective care possible.
If I see another physician at the office will my insurance coverage remain the same? Not necessarily. Each physician is contracted with the insurance plans that he or she chooses and therefore you should not assume that by seeing another physician that you will still be covered (as a preferred provider arrangement). All 5 physicians are Medicare participating providers.