It's clear that GenesisCare U.S. has its strengths, particularly in terms of the quality of care provided by doctors like Dr. William J. Tingle. Many patients have praised his expertise and kindness. However, the office staff's performance is a significant concern. Several reviewers have expressed frustration with long wait times, unreturned calls, and unhelpful front desk staff. This has led to a lack of confidence in the office's ability to provide efficient and patient-centered care. Some reviewers have noted that the office seems understaffed, which may contribute to the issues with communication and scheduling. While Dr. Tingle's skills are undoubtedly valuable, the office's problems may hinder patients' ability to access and benefit from his care.