{"npi":"1689693327","type":"NPI-1","status":"active","name":{"display":"Dr. John Leff MD","other":[],"first":"JOHN","last":"LEFF","credential":"MD"},"specialty":{"primary_taxonomy":"207RE0101X","primary_taxonomy_description":"Endocrinology, Diabetes & Metabolism Physician","slug":"endocrinology-diabetes-metabolism-physician","schema_org_specialty":null,"all":[{"code":"207RE0101X","description":"Endocrinology, Diabetes & Metabolism Physician","primary":true,"state":"NY","license":"143472"}]},"addresses":[{"purpose":"LOCATION","street_1":"LUTHERAN MEDICAL CENTER","city":"BROOKLYN","state":"NY","postal_code":"11220","country_code":"US","street_2":"150 55TH ST","phone":"7186307369","fax":"7186306286"},{"purpose":"MAILING","street_1":"150 55TH ST","city":"BROOKLYN","state":"NY","postal_code":"112202508","country_code":"US","street_2":"STATION 14","phone":"7186307369","fax":"7186306286"}],"license":{"state":"NY","number":"143472"},"identifiers":[],"pecos":{"enrolled_at":null,"enrollments":[]},"enumeration_date":"2006-07-19","last_updated":"2012-01-17","_meta":{"source":"NPPES","snapshot_date":"2012-01-17","doc_url":"https://findmynpi.com/api"}}