Which doctor is responsible for follow up after Ileostomy surgery?

My husband had an emergency Ileostomy on August 7 by an emergency physician. He never had a physician associated with this health problem. My question is, do you have a physician dedicated to monitor the health and well being of the stoma, rashes, vitamin deficiency, loss of weight, appetite, etc.? If so we need to know why type of specialty doctor this would be. Thank you.