{"result_count":1,"results":[{"addresses":[{"address_1":"1515 HOLCOMBE BLVD","address_purpose":"LOCATION","address_type":"DOM","city":"HOUSTON","country_code":"US","country_name":"United States","postal_code":"770304000","state":"TX","telephone_number":"713-792-6161"},{"address_1":"PO BOX 4439","address_purpose":"MAILING","address_type":"DOM","city":"HOUSTON","country_code":"US","country_name":"United States","postal_code":"772104439","state":"TX","telephone_number":"713-792-2991"}],"basic":{"certification_date":"2026-05-13","credential":"M.D.","enumeration_date":"2006-05-10","first_name":"WILLIAM","last_name":"MATSUI","last_updated":"2026-05-13","middle_name":"HIKARU","name_prefix":"--","name_suffix":"--","sex":"M","sole_proprietor":"NO","status":"A"},"created_epoch":"1147252481000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[{"code":"05","desc":"MEDICAID","identifier":"409100100","issuer":null,"state":"MD"}],"last_updated_epoch":"1778672317000","number":"1568411049","other_names":[],"practiceLocations":[],"taxonomies":[{"code":"207RX0202X","desc":"Internal Medicine, Medical Oncology","license":"R6828","primary":true,"state":"TX","taxonomy_group":""}]}]}