David Benedict All the elements are there: a forgotten but fascinatingly tragic, true-life story about a world-changing medical discovery that saved the lives of millions; a large-cast, grand-scale production including dancers and onstage musicians; and Mark Rylance on stage in a no-hold-barred performance. Yet despite remarkably fierce energy from everyone involved, most particularly Rylance, the bio-drama “Dr. Semmelweis” ultimately proves more enervating than exciting. You would be forgiven for thinking that this play about a maverick, misunderstood savior in the middle of a public health crisis was a direct response to recent world events. In fact, workshops that formed the foundation of the play, the brainchild of Rylance and director Tom Morris (co-director of “War Horse”), predated the COVID-19 pandemic. Nonetheless, the events of very recent history adds considerable perspective to an already important story, dramatized here by Stephen Brown and Rylance and set in the middle of the 19th century.