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National Site Visit Contractor

CMS has implemented a site visit verification process using a National Site Visit Contractor (NSVC). The site visit verification process is a screening mechanism to prevent questionable providers and suppliers from enrolling in the Medicare program. The NSVC will conduct site visits for all providers and suppliers except for the Durable Medical Equipment (DMEPOS) which will continue to be conducted by the National Supplier Clearinghouse. The NSVC will verify enrollment related information during the site visit and collect specific information based on pre-defined checklists. Failure to cooperate with the inspector(s) could result in the denial or revocation of your Medicare enrollment number.


MSM Security Services, LLC was awarded the national site visit contract. MSM and its subcontractors, Computer Evidence Specialists, LLC (CES) and Health Integrity, LLC (HI) are authorized by CMS to conduct the provider and supplier site visits. Inspectors performing the site visits will be employees of MSM, CES, or HI and shall possess a photo ID and a letter of authorization issued and signed by CMS that the provider or supplier may review. Under no circumstances may their ID or this letter be copied or retained by the provider/supplier. If you have any questions, please contact MSM point of contact at (855) 220-1071.