The Secretary of Health and Human Services shall not—
(1)
remove a member of the National Health Service Corps from a health facility operated by the Indian Health Service or by a tribe or tribal organization under contract with the Indian Health Service under the Indian Self-Determination Act [25 U.S.C. 450f et seq.], or
(2)
withdraw funding used to support such member,
unless the Secretary, acting through the Service, has ensured that the Indians receiving services from such member will experience no reduction in services.