{"result_count":1,"results":[{"addresses":[{"address_1":"300 CONGRESS ST STE 304","address_purpose":"MAILING","address_type":"DOM","city":"QUINCY","country_code":"US","country_name":"United States","fax_number":"617-773-2202","postal_code":"021690907","state":"MA","telephone_number":"617-773-2200"},{"address_1":"300 CONGRESS ST STE 304","address_purpose":"LOCATION","address_type":"DOM","city":"QUINCY","country_code":"US","country_name":"United States","fax_number":"617-773-2202","postal_code":"021690907","state":"MA","telephone_number":"617-773-2200"}],"basic":{"certification_date":"2025-10-23","credential":"MD","enumeration_date":"2007-02-27","first_name":"JOHN","last_name":"KADZIELSKI","last_updated":"2025-10-23","middle_name":"J","name_prefix":"Dr.","name_suffix":"--","sex":"M","sole_proprietor":"NO","status":"A"},"created_epoch":"1172589969000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[{"code":"01","desc":"Other (non-Medicare)","identifier":"1053448498","issuer":"Blue Cross Blue Shield","state":null},{"code":"05","desc":"MEDICAID","identifier":"110088698A","issuer":null,"state":"MA"},{"code":"01","desc":"Other (non-Medicare)","identifier":"479451","issuer":"Tufts","state":null}],"last_updated_epoch":"1761250689000","number":"1053448498","other_names":[],"practiceLocations":[],"taxonomies":[{"code":"207XS0106X","desc":"Orthopaedic Surgery, Hand Surgery","license":"239683","primary":true,"state":"MA","taxonomy_group":""},{"code":"207X00000X","desc":"Orthopaedic Surgery","license":"L-228167","primary":false,"state":"MA","taxonomy_group":""}]}]}