Came to the United States, 1865. Educated public grammar and high schools. Studied and practiced pharmacy.
Doctor of Medicine University Medical College (New York University), 1879.
In practice since 1879. Since 1891 has confined practice to gynecology. Professor gynecology, New York Post-Graduate Medical school and Hospital (now post-graduate department of Columbia University), 1890-1923.
Now professor emeritus.
Was consultant gynecologist, Stuyvesant Polyclinic, Post Graduate, Beth Israel, Saint Vincent’s and Union hospitals. Retired, 1929. Extensive investigator into physiological action of cocaine and gynecological pathology.
Inventor of various gynecological instruments and an operating table for abdominal surgery which received medal at Paris Exposition, 1900, and also a modern examining table for office work.
Fellow American College Surgeons (founder. Member American Gynecological Society, American Gynecological. Club, Westchester Surgical Society.
Member National Society of Sciences, New York Academy Sciences, International Gynecological Society and Obstetrical Society (ex-president), New York Academy of Medicine (ex-chairman gynecological section), Southern Surgical Society, Military Surgeons United States of America, Royal Society of Medicine (London), Gynecological Society of Germany.
Member, ex-president German Medical Society (New York). Member Gynecological Society of Great Britain, Gynecological Society of Germany.
His only child, Hermann J., Junior, First lieutenant 102d Infantry, was killed in France, July 20, 1918, while on volunteer duty on hazardous mission as aerial observer attached to 1st American Escadrille.
Married Hedwig Krüger, 1891.