{"npi":"1083681027","type":"NPI-1","status":"active","name":{"display":"Dr. Joon Ahn M.D.","other":[],"first":"JOON","last":"AHN","middle":"S","credential":"M.D."},"specialty":{"primary_taxonomy":"207XS0106X","primary_taxonomy_description":"Hand Surgery","slug":"hand-surgery","schema_org_specialty":"Surgical","all":[{"code":"207XS0106X","description":"Hand Surgery","primary":true,"state":"IL","license":"036104840"}]},"addresses":[{"purpose":"LOCATION","street_1":"4121 VETERANS MEMORIAL DR","city":"MOUNT VERNON","state":"IL","postal_code":"628646262","country_code":"US","phone":"6182423778","fax":"6182422551"},{"purpose":"MAILING","street_1":"4121 VETERANS MEMORIAL DR","city":"MOUNT VERNON","state":"IL","postal_code":"628646262","country_code":"US","phone":"6182423778","fax":"6182422551"}],"license":{"state":"IL","number":"036104840"},"identifiers":[{"type_code":"05","label":"Medicaid","value":"036104840","state":"IL","issuer":null}],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20100604001096","type_code":"14-40","type_desc":"PRACTITIONER - HAND SURGERY","state":"IL","pac_id":"8426188277"}]},"enumeration_date":"2006-03-08","last_updated":"2007-07-09","_meta":{"source":"NPPES","snapshot_date":"2007-07-09","doc_url":"https://findmynpi.com/api"}}