
Hi @Vladimir Kuryatnik ,
Since your problem is not specifically described, my understanding is that it is only necessary to use SharePoint as a storage space to store and manage medical contracts.
So as my lack of knowledge about Healthcare Industry case, I can only give you some suggestions from the perspective of SharePoint:
Organizations use Microsoft SharePoint to create websites. You can use it as a secure place to store, organize, share, and access information from any device.
You can store the contracts in the document library, and choose to use one or more document libraries according to the actual situation.
https://support.microsoft.com/en-us/office/create-a-document-library-in-sharepoint-306728fe-0325-4b28-b60d-f902e1d75939#:~:text=Create%20a%20library%20in%20SharePoint,Select%20Create.
Regarding management, you can set different permissions for management control.
https://support.microsoft.com/en-us/office/customize-permissions-for-a-sharepoint-list-or-library-02d770f3-59eb-4910-a608-5f84cc297782#:~:text=Open%20the%20list%20or%20library,and%20then%20click%20Manage%20Permissions.
https://kb.uconn.edu/space/IKB/26043253275/Managing+Folder+Permissions+in+SharePoint#:~:text=Open%20the%20folder%20you%20want,Click%20Manage%20Access.
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
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