In oral references, chief NCOs may be called chiefs, but they are never called sir. Enlisted USN and USCG personnel are referred to verbally by their basic rank. All classes of non-commissioned officers (first, second and third) are orally referred to as “non-commissioned officers (last name)”. The military will have an occupational specialty (a qualification); you mentioned that you are a doctor from a hospital; there is no reference to your specialty in the formal management forms.
For the most part, he'll call all senior officers sir. Even female officers are called sir. In BSG military it is a gender-neutral degree. In addition to a monthly basic salary, a chief petty officer in the Navy may be entitled to several types of allowances and bonuses, such as payment for hostile fire, personal monetary allowance, and more.
In addition to the functions of his category, a chief petty officer is responsible for training junior officers and for managing his division of sailors and non-commissioned officers. The promotion to chief petty officer is an even more rigorous process than the promotion to any of the ranks of non-commissioned officers. Like non-commissioned officers, all chief NCOs have a qualification or position, and their full operational title is determined by their qualification; a chief petty officer who specializes as a fellow gunnery officer, for example, is known by the full title of comrade in chief. The chief petty officer is the seventh rank in the United States Navy, above the first-class petty officer and directly below the senior petty officer.
The equivalent of a chief non-commissioned officer for a civilian government employee is paid according to the salary scale in the general category. In addition to wearing a uniform on board similar to that of a commissioned officer, chief petty officers enjoy private housing and access to the boss's dining room, known in informal Navy jargon as a goat locker, in reference to the ship's livestock that used to be kept in the boss's quarters for safekeeping. In addition to greater responsibilities, chief petty officers enjoy a wide variety of benefits while in service, far greater than those received by non-commissioned officers or enlisted sailors. The only notable exception is that senior commissioned officers may call junior officers by their first names.
The chief petty officer is the first of the Navy's chief petty officer ranks and the first rank with the enhanced functions and benefits of the chief petty officer. Most of the time, a chief petty officer is promoted from first-class petty officer (PO), although promotion from lower wage levels can occur if sufficient leadership and experience are demonstrated. Photo of Admiral Vern Clark wearing a white sailor's uniform on a black background on a faded forest entitled A Time of Great Consequence with the following caption, with the following banner, with the banner of the former chief of naval operations, Admiral Vern Clark. After a highly competitive selection process, the selected candidates are incorporated into the Chief's community by their new colleagues and commanding officers.
The chief petty officer is the first rank in the Navy that has much broader powers and responsibilities than those below him.