Late-Edo Japanese kohō-ha 古方派 (Ancient-Formula School) physician of Yūn-pǔ 暈浦, Banshū 播州 (Harima province, mod. Hyōgo). Disciple of the 吉益東洞 Yoshimasu Tōdō / Yoshimasu Naomichi school of Kyōto medicine. His one extant work is KR3er094 Cháng-shā zhèng-huì 長沙證匯 (Kansei 2 / 1790), a one-juǎn systematisation of Zhāng Zhòng-jǐng’s Shāng-hán lùn and Jīn-guì yào-lüè formulary by symptom-pattern category, prefaced by Yoshimasu Naomichi (the school-head) and his disciples Okuda Genkei 奧田元繼 and Okuda Genjun 奧田元純 of Naniwa. Tanaka’s companion doctrinal treatise Féng-yuán 逢原 (Hōgen) — mentioned in Okuda Genjun’s postface as the systematic exposition of his medical position — is not extant in the hxwd series. Best known by his zì Yuàn-zhòng 願仲 (Japanese: Negaonaka).