A medical stethoscope head (1) comprises a body (2) with an inlet pipe and at least one diaphragm portion (4) provided with a diaphragm (5) at its lower surface. At least one identifying-personalizing ring (11) provided with identifying-personalizing means (14) is mounted in any area of an upper surface (10) of said diaphragm portion (4), opposite to said diaphragm (5). The identifying-personalizing ring (11), at its surface adjacent to the diaphragm portion (4), is provided with at least one locating element for explicit locating the identifying-personalizing ring (11) in defined angular position in relation to an axis (3') of said inlet pipe (3) of said body (2). In other embodiment of the invention a medical stethoscope head comprises a diaphragm portion (4), which, at its upper surface (10), opposite to a diaphragm (5), is provided with any identifying-personalizing means (14), and said diaphragm portion (4) is disconnectable joined with said body (2) by at least one locating-connecting means (20), allowing exchanging of a diaphragm portion (4) and explicit locating the diaphragm portion (4) in defined angular position in relation to an axis (3') of said inlet pipe (3) of said body (2).