Create a memorable, easily repeatable value statement. Decide what it is that you want people to say about your center. Make it easy for people to talk about you by giving them the words to say. Provide quality service, and most of all treat people with respect. Make sure respect is present in everything you do and say.
Respect creates a feeling of honor which nourishes people at a soul level.
Ask people to spread the word. Ask people to help you reach others who can benefit from the services you provide. With a little encouragement individuals will help you spread the word to others throughout the community. Give people something great to talk about. Do something extraordinary that makes people want to talk.