There are many organizations that not provide a review of websites for accessibility as well as perform remediation. The Job Accommodation Network and EARN have information regarding website accessibility. Organizations such as Hire Potential, The Sierra Group, and Audio Eye are just a few organizations who perform this type of service and employ individuals with disabilities to assist in conducting the accessibility review. Biddle Consulting Group performs training on accommodations, compliance with ADA/Section 503, and inclusive practices for individuals with disabilities. Feel free to email me for additional information at email@example.com.