{"npi":"1194138024","type":"NPI-1","status":"active","name":{"display":"Mr. Hassan Ahmad M.D","other":[],"first":"HASSAN","last":"AHMAD","middle":"A","credential":"M.D"},"specialty":{"primary_taxonomy":"207K00000X","primary_taxonomy_description":"Allergy & Immunology Physician","slug":"allergy-immunology-physician","schema_org_specialty":null,"all":[{"code":"207K00000X","description":"Allergy & Immunology Physician","primary":true,"state":"TX","license":"S5537"}]},"addresses":[{"purpose":"LOCATION","street_1":"226 S WOODS MILL RD STE 47W","city":"CHESTERFIELD","state":"MO","postal_code":"630173663","country_code":"US","phone":"3142056600","fax":"3145905941"},{"purpose":"MAILING","street_1":"226 S WOODS MILL RD STE 47W","city":"CHESTERFIELD","state":"MO","postal_code":"630173663","country_code":"US","phone":"3142056600","fax":"3145905941"}],"license":{"state":"TX","number":"S5537"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20210726000659","type_code":"14-03","type_desc":"PRACTITIONER - ALLERGY/IMMUNOLOGY","state":"MO","pac_id":"6103040993"}]},"enumeration_date":"2014-06-09","last_updated":"2021-07-28","_meta":{"source":"NPPES","snapshot_date":"2021-07-28","doc_url":"https://findmynpi.com/api"}}