Mid-Heian-period Japanese physician and the compiler of the KR3er092 Yī-xīn-fāng 醫心方 (Japanese: Ishinpō, 984), the largest surviving early-medieval Japanese medical compilation. Descendant of the Tanba 丹波 clan, who traced their lineage to Chinese immigrant-physicians of the Nara period and held hereditary medical office at the imperial Tenyaku-ryō 典藥寮 (Bureau of Medicine). He held the Hari-no-Hakushi 鍼博士 (Doctor of Acupuncture) post in the Tenyaku-ryō and was awarded Ason 朝臣 status in his later career. His son Tanba no Masatada 丹波雅忠 founded the Tanba-family hereditary medical line, which continued in unbroken service to the Japanese imperial court for nearly nine hundred years (down through the late-Edo Tanba Genshu / Genkichi line who produced the editio princeps of the Yī-xīn-fāng in 1860). The 1860 print descended from the Nakarai-shi 半井氏 scroll-form manuscript of 984, now a Japanese National Treasure.