UNIQUE PHYSICIAN IDENTIFICATION NUMBER (UPIN) …
https://www.cms.gov/Research-Statistics-Data-and-Systems/Files-for-Order/NonIdentifiableDataFiles/Downloads/UPINinfo.pdf
WEBThe Unique Physician Identification Number (UPIN) Directory contains selected information on physicians, doctors of Osteopathy, limited licensed practitioners and some non physician practitioners who are enrolled in the Medicare Program.
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