{"result_count":1,"results":[{"addresses":[{"address_1":"PO BOX 232410","address_purpose":"MAILING","address_type":"DOM","city":"SAN DIEGO","country_code":"US","country_name":"United States","postal_code":"921932410","state":"CA"},{"address_1":"3315 WATT AVE","address_2":"DEPARTMENT OF ANESTHESIOLOGY","address_purpose":"LOCATION","address_type":"DOM","city":"SACRAMENTO","country_code":"US","country_name":"United States","postal_code":"958213600","state":"CA","telephone_number":"916-481-6800"}],"basic":{"certification_date":"2026-05-20","credential":"M.D.","enumeration_date":"2013-04-21","first_name":"JEFFREY","last_name":"WALKER","last_updated":"2026-05-20","middle_name":"BRIAN","name_prefix":"Dr.","sex":"M","sole_proprietor":"NO","status":"A"},"created_epoch":"1366553215000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[],"last_updated_epoch":"1779285101000","number":"1023452042","other_names":[],"practiceLocations":[],"taxonomies":[{"code":"207L00000X","desc":"Anesthesiology","license":"A134006","primary":false,"state":"CA","taxonomy_group":""},{"code":"2083B0002X","desc":"Preventive Medicine, Obesity Medicine","license":"25MA11783200","primary":false,"state":"NJ","taxonomy_group":""},{"code":"2083B0002X","desc":"Preventive Medicine, Obesity Medicine","license":"D0095863","primary":true,"state":"MD","taxonomy_group":""}]}]}