Cornerstone has been a great experience with them. They are very professional and very knowledgeable. They understand our needs and are very attentive to detail. They are very good at their job and have always been extremely efficient. I have never experienced any problems with them. I would highly recommend Cornerstone Professional Services. We have used Cornerstone for many years and have always been very pleased with their services. As a medical transcriptionist, I have used Cornerstone Professional Services for many years and have always been pleased with their service. Their staff is very friendly and knowledgeable. They are always professional and very organized. Very nice people to work with.