{"result_count":1,"results":[{"addresses":[{"address_1":"801 S WASHINGTON ST","address_purpose":"LOCATION","address_type":"DOM","city":"NAPERVILLE","country_code":"US","country_name":"United States","postal_code":"605407430","state":"IL","telephone_number":"630-527-3000"},{"address_1":"1000 MINERAL POINT AVE","address_purpose":"MAILING","address_type":"DOM","city":"JANESVILLE","country_code":"US","country_name":"United States","fax_number":"608-756-6177","postal_code":"535482940","state":"WI","telephone_number":"608-756-6111"}],"basic":{"certification_date":"2025-11-25","credential":"MD","enumeration_date":"2006-12-30","first_name":"MICHAEL","last_name":"HARTMANN","last_updated":"2025-11-25","middle_name":"J.","sex":"M","sole_proprietor":"NO","status":"A"},"created_epoch":"1167491037000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[{"code":"01","desc":"Other (non-Medicare)","identifier":"000054176-K400095937","issuer":"WI Medicare","state":"WI"},{"code":"05","desc":"MEDICAID","identifier":"036109982","issuer":null,"state":"IL"},{"code":"01","desc":"Other (non-Medicare)","identifier":"1013073253","issuer":"BCBSWI","state":"WI"},{"code":"05","desc":"MEDICAID","identifier":"1013073253","issuer":null,"state":"WI"},{"code":"01","desc":"Other (non-Medicare)","identifier":"HARTMMI4","issuer":"MercyCare Insurance","state":"WI"}],"last_updated_epoch":"1764099219000","number":"1013073253","other_names":[],"practiceLocations":[{"address_1":"1000 MINERAL POINT AVE","address_purpose":"LOCATION","address_type":"DOM","city":"JANESVILLE","country_code":"US","country_name":"United States","fax_number":"608-756-6177","postal_code":"53548","state":"WI","telephone_number":"608-756-6111"}],"taxonomies":[{"code":"207P00000X","desc":"Emergency Medicine","license":"60901-20","primary":false,"state":"WI","taxonomy_group":""},{"code":"207P00000X","desc":"Emergency Medicine","license":"036109982","primary":true,"state":"IL","taxonomy_group":""}]}]}