Why is Rizal referred as a German Doctor?

Answer 1

Rizal stayed at Germany for these five reasons:

First, to gain further knowledge of ophthalmology;

Second, to further his studies in sciences and other languages;

Third, to associate with German scientists and scholars;

Fourth, to observe the economic and political conditions of the German nation; and

Fifth, to published his novel, noli me tangere.

Answer 2

Dr. José P. Riza was called the "German doctor" because he obtained his second doctorate at Heidelberg University in Germany.