I had always assumed there was only one, and I falsely thought all doctors had to take it. I think it's clear that the classical version is completely out of touch with reality, and I wonder if it was ever taken seriously even back in Hippocrates' era. The modern version tries to help put a little more reality into the oath and adds a moral element and a more humanistic approach to the document. It tries to deliver a physician we all can respect. Instead of promoting this most critical part of health care, doctors are taught by their lawyers' insurance companies, and their own peers to turn a deaf ear to their patients and believe only test results.
Relationships take time, and time is the enemy.
In this environment, listening and observing become counterproductive. We as patients tolerate physicians who do not care, prescribe inappropriate tests and medicines, and act in a condescending manner. Oath, display it on the office wall and retake it every few years, it would go a long way toward rebuilding some of the lost respect. A covenant philosophy is still needed to ensure unbiased and ethical behavior in those who command the great respect and responsibility that physicians have in our society. Furthermore, accountability and consequences for breaking the societal covenant should be reinstituted and monitored by physicians and nonphysicians alike.