In the anime, the reason that Nurse Joys are all over the place is because they're all related. Not only that, Joy is their family name and not their actual first names. Along with them looking identical, they are also all voiced by the same person, making them sound identical too. This is noted when he can tell the difference between the eyelash length of two different Nurse Joys. Nurse Joy is actually one of the few girls in the anime that does not reject Brock.
Nurse Joy's Chansey
Nurse Joy - The Pokémon Wiki
This caused Ash and Pikachu to worry about their upcoming Gym battle with Lt. While Ash and his friends were in Dr. When Team Rocket battled Ash and his friends, Chansey prevented them from doing so and as Chansey cared for Arbok and Weezing earlier while they were injured, Arbok and Weezing refused to fight Chansey. Proctor and Chansey waved goodbye to Ash and his friends. Jessie was revealed to have once befriended a Chansey, which she later met again in Ignorance is Blissey. When she did, it was revealed to have evolved into a Blissey. In Hour of the Houndour , a Chansey, along with Nurse Joy, bought groceries earlier and noticed an ice cream truck.
Much like in the games, most of the Nurse Joys have brink pink hair and fair skin. Others could have a lighter shade of hair color, or brighter or darker skin. In Unova, Nurse Joys have different hairstyle with the hair being tied in rounder rings, a plain pink dress with a shorter apron, white pantyhose, and pink shoes instead of white.
As revealed in Drifloon in the Wind! Surge's Raichu. She stopped Ash and Misty from fighting, reminding them that the hospital required peace. Nurse Joy then advised Ash that Pikachu would require more rest to regain its stamina for its upcoming rematch. This Nurse Joy was uncharacteristically ill-tempered, but nevertheless, she instructed Ash to leave Pikachu with her overnight.