This passage doesn’t make it totally clear why Henry is seeing a geneticist, but it could relate to Clare’s idea that the couple starts trying for a baby—perhaps Henry is searching for some way to minimize the chance that his and Clare’s potential child will have his disease, wanting to exert whatever control they have over their future child’s health. Given the unbelievable nature of his Henry’s condition, he must resort of flashy shows of his foreknowledge of the future to convince skeptics like Dr. Kendrick that he is telling the truth. Henry rarely interferes with the natural progression of fate, but here he does so, seemingly using information about Dr. Kendrick’s future son that a future version of Henry has given him, to convince Dr. Kendrick that he is telling the truth about his so-called “Chrono-Impairment.”