https://oig.hhs.gov/reports/all/2016/early-alert-incorporating-medical-device-specific-information-on-claim-forms/
...impediment.) To determine this, we had to subpoena manufacturers to obtain lists of beneficiaries...medical records. Specifically, we subpoenaed ...
https://oig.hhs.gov/reports/all/2016/we-could-not-determine-whether-west-virginias-severance-and-business-privilege-tax-on-behavioral-health-services-is-a-permissible-health-care-related-tax/
...complete our analysis. We did not subpoena those records. Without this information