why I feel the need to go straight to the pts Dr, not the Dr on call

A few weeks ago now I had a post-op patient who, while in the city, had fallen and gotten a sub-dural hematoma...shipped back to our rural site he was periodically confused, had super high blood pressures, and just wasnt being himself, according to his wife. I report all this to the doctor on call who gives him some BP meds, and then orders Haldol prn. Now we all think this is a bit much as the pt isnt actively psychotic. Then the Dr on call gets this pts INR results, which are within normal range, and decides to order 6mg Coumadin. Well this sure didnt seem right, so after consulting with my coworkers it is decided I will go straight to the pts Dr and avoid the doc on call. Pts doc wants pt sent out for a stat CT after hearing how pts weekend has gone, and to not on my life give the 6mg Coumadin. Pt goes for CT, everything is thankfully good. However, Dr. on Call explodes in rage when he finds out pt is going out, calls pt Dr to ream him out. Fortunately he couldnt put two and two together to figure out it was me who called the pts DR. Eventually he did figure out it was me, and sits my down one day, to talk about how it made him look bad that he couldnt take care of the other Dr's pts, and being a small town word will spread, etc, etc, and how we should just be able to call the Dr on call. Well maybe if the Dr on call actually stayed in the hospital, didnt run around like a chicken with its head cutoff, and read charts and histories before ordering meds. I can't run around all day after the Dr on call, that day already I spent at least on hour looking for him and trying to get ahold of him, and then having to call him back to clarify his poorly handwritten orders. If I had dealt with the pts Dr from the getgo I think half my time and stress would have been saved.