{"result_count":1,"results":[{"addresses":[{"address_1":"150 HARVESTER DR STE 300","address_purpose":"MAILING","address_type":"DOM","city":"BURR RIDGE","country_code":"US","country_name":"United States","postal_code":"605275965","state":"IL"},{"address_1":"5841 S MARYLAND AVE","address_purpose":"LOCATION","address_type":"DOM","city":"CHICAGO","country_code":"US","country_name":"United States","postal_code":"606371443","state":"IL","telephone_number":"888-824-0200"}],"basic":{"certification_date":"2026-01-15","credential":"M.D.","enumeration_date":"2012-04-25","first_name":"GARY","last_name":"ALTWERGER","last_updated":"2026-01-15","sex":"M","sole_proprietor":"YES","status":"A"},"created_epoch":"1335371962000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[],"last_updated_epoch":"1768510370000","number":"1407114630","other_names":[],"practiceLocations":[{"address_1":"333 CEDAR STREET","address_2":"FMB 328","address_purpose":"LOCATION","address_type":"DOM","city":"NEW HAVEN","country_code":"US","country_name":"United States","fax_number":"203-785-7134","postal_code":"065103220","state":"CT","telephone_number":"203-785-7385"},{"address_1":"880 W. CENTRAL RD.","address_2":"SUITE 5000","address_purpose":"LOCATION","address_type":"DOM","city":"ARLINGTON HEIGHTS","country_code":"US","country_name":"United States","fax_number":"847-618-3809","postal_code":"600052355","state":"IL","telephone_number":"847-618-3800"}],"taxonomies":[{"code":"207VX0201X","desc":"Obstetrics & Gynecology, Gynecologic Oncology","license":"036176993","primary":true,"state":"IL","taxonomy_group":""}]}]}