My agency requires a W-9, EIN, and/or Tax ID Number. Can you provide me with this information? TherapyWorks Support Staff June 09, 2017 21:51 Updated Follow Yes. Please contact us and we are happy to send a copy to you. Related articles Do you accept purchase orders? I’ve registered for the Online Course and I am having technical difficulties. Do you have suggestions? I'm in the USA, how much will shipping cost for the products I want to order? Comments 0 comments Please sign in to leave a comment.