{"result_count":1,"results":[{"addresses":[{"address_1":"185 CAMBRIDGE ST FL 5","address_purpose":"LOCATION","address_type":"DOM","city":"BOSTON","country_code":"US","country_name":"United States","fax_number":"617-643-3244","postal_code":"021142790","state":"MA","telephone_number":"617-726-2000"},{"address_1":"55 FRUIT ST","address_purpose":"MAILING","address_type":"DOM","city":"BOSTON","country_code":"US","country_name":"United States","postal_code":"021142621","state":"MA"}],"basic":{"certification_date":"2026-02-09","credential":"M.D., M.Sc.","enumeration_date":"2007-07-18","first_name":"CESAR","last_name":"CASTRO","last_updated":"2026-02-09","middle_name":"M","sex":"M","sole_proprietor":"YES","status":"A"},"created_epoch":"1184791153000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[],"last_updated_epoch":"1770643899000","number":"1184824112","other_names":[],"practiceLocations":[{"address_1":"75 FRANCIS ST","address_purpose":"LOCATION","address_type":"DOM","city":"BOSTON","country_code":"US","country_name":"United States","postal_code":"021156106","state":"MA","telephone_number":"617-732-5500"}],"taxonomies":[{"code":"207RX0202X","desc":"Internal Medicine, Medical Oncology","license":"235484","primary":true,"state":"MA","taxonomy_group":""},{"code":"207R00000X","desc":"Internal Medicine","license":"235484","primary":false,"state":"MA","taxonomy_group":""}]}]}