{"npi":"1922072891","type":"NPI-1","status":"active","name":{"display":"Maroun Hayek MD","other":[],"first":"MAROUN","last":"HAYEK","middle":"E","credential":"MD"},"specialty":{"primary_taxonomy":"207RH0003X","primary_taxonomy_description":"Hematology & Oncology","slug":"hematology-oncology","schema_org_specialty":"Oncologic","all":[{"code":"207RH0003X","description":"Hematology & Oncology","primary":true,"state":"MS","license":"16611"}]},"addresses":[{"purpose":"LOCATION","street_1":"1514 E UNION ST","city":"GREENVILLE","state":"MS","postal_code":"387033248","country_code":"US","phone":"6623346394","fax":"6623321647"},{"purpose":"MAILING","street_1":"1514 E UNION ST","city":"GREENVILLE","state":"MS","postal_code":"387033248","country_code":"US","phone":"6623346394","fax":"6623321647"}],"license":{"state":"MS","number":"16611"},"identifiers":[{"type_code":"05","label":"Medicaid","value":"00123081","state":"MS","issuer":null},{"type_code":"05","label":"Medicaid","value":"129581001","state":"AR","issuer":null}],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20091229000299","type_code":"14-83","type_desc":"PRACTITIONER - HEMATOLOGY/ONCOLOGY","state":"MS","pac_id":"4688714496"}]},"enumeration_date":"2006-02-15","last_updated":"2014-04-16","_meta":{"source":"NPPES","snapshot_date":"2014-04-16","doc_url":"https://findmynpi.com/api"}}