Dr. Tinnitus

Dr. Tinnitus is a ear doctor who tells D.W. that she needs an operation.

Trivia

 * "Tinnitus" is also the name of an ear infection that causes ringing in a person's ears.
 * She appears on the cover the DVD release "Hooray for Health!," examining Arthur when he has chickenpox, even though she did not appear in "Arthur's Chicken Pox" and was not introduced until much later in the series.