CONTACTS database seems to be lots of organizations (not persons at CMS). For example you can get the Ombudsman for Aging Services in North Dakota.
Something called Coverage/InfoExchange as of May 2022 still lists an Excel "CMD" medical director directory with emails.
https://www.cms.gov/Medicare/Coverage/InfoExchange
CMS publishes an NCD REPORT TO CONGRESS. As of May 2022, the most recent was CY2020. Half of it is boilerplate rules.
