{"result_count":1,"results":[{"addresses":[{"address_1":"200 HAWKINS DR","address_purpose":"MAILING","address_type":"DOM","city":"IOWA CITY","country_code":"US","country_name":"United States","postal_code":"522421009","state":"IA"},{"address_1":"200 HAWKINS DR","address_purpose":"LOCATION","address_type":"DOM","city":"IOWA CITY","country_code":"US","country_name":"United States","fax_number":"319-384-6247","postal_code":"522421009","state":"IA","telephone_number":"319-356-2737"}],"basic":{"certification_date":"2025-08-26","enumeration_date":"2017-05-05","first_name":"NICHOLAS","last_name":"ARNOLD","last_updated":"2025-08-26","middle_name":"R","sex":"M","sole_proprietor":"NO","status":"A"},"created_epoch":"1494007752000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[],"last_updated_epoch":"1756221323000","number":"1780110031","other_names":[],"practiceLocations":[{"address_1":"105 E 9TH ST","address_purpose":"LOCATION","address_type":"DOM","city":"CORALVILLE","country_code":"US","country_name":"United States","fax_number":"319-384-6247","postal_code":"522412209","state":"IA","telephone_number":"319-356-2737"},{"address_1":"500 E MARKET ST","address_purpose":"LOCATION","address_type":"DOM","city":"IOWA CITY","country_code":"US","country_name":"United States","fax_number":"319-384-6247","postal_code":"522452633","state":"IA","telephone_number":"319-356-2737"}],"taxonomies":[{"code":"207R00000X","desc":"Internal Medicine","license":"MD-47251","primary":false,"state":"IA","taxonomy_group":""},{"code":"207RC0200X","desc":"Internal Medicine, Critical Care Medicine","license":"MD-47251","primary":false,"state":"IA","taxonomy_group":""},{"code":"207RC0000X","desc":"Internal Medicine, Cardiovascular Disease","license":"MD-47251","primary":true,"state":"IA","taxonomy_group":""}]}]}