Information for Providers

Form I-9 Form I-9 Form W-4 Form W-4 Form W-9 Form W-9 Direct Deposit Application Direct Deposit Application
DC Withholding Form DC Withholding Form MD Withholding Form MD Withholding Form VA Withholding Form VA Withholding Form

Every provider must fill out an I-9 form. Employees must also complete a W-4 form and a state withholding form. Independent contractors must complete a W-9 form. Please fax the forms to 301-263-7794 between the hours of 9 am and 9 pm or scan and email them to

Invoice Instructions Invoice instructions

Billing System (standard) Billing System (mobile devices)

Username/password required - contact for more information.

Information for Medical Interpreters and Providers


If you don't have an Acrobat Reader application, click here for a free download:

Get Adobe Reader