{"npi":"1306828074","type":"NPI-1","status":"active","name":{"display":"Dr. Alvin Schergen MD","other":[],"first":"ALVIN","last":"SCHERGEN","middle":"K","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":"MO","license":"R8B76"}]},"addresses":[{"purpose":"LOCATION","street_1":"6400 CLAYTON RD","city":"SAINT LOUIS","state":"MO","postal_code":"631171850","country_code":"US","street_2":"SUITE 302","phone":"3146453370","fax":"3146450576"},{"purpose":"MAILING","street_1":"10777 SUNSET OFFICE DR","city":"SAINT LOUIS","state":"MO","postal_code":"631271019","country_code":"US","street_2":"SUITE 310","phone":"3148225900","fax":"3148225919"}],"license":{"state":"MO","number":"R8B76"},"identifiers":[{"type_code":"01","label":"Other","value":"10864","state":"MO","issuer":"BLUE CHOICE"},{"type_code":"01","label":"Other","value":"43405","state":"MO","issuer":"GHP"},{"type_code":"01","label":"Other","value":"101305","state":"MO","issuer":"HEALTHLINK HMO"},{"type_code":"01","label":"Other","value":"110016471","state":"MO","issuer":"RAILROAD MEDICARE"},{"type_code":"01","label":"Other","value":"3490","state":"MO","issuer":"GHP"},{"type_code":"01","label":"Other","value":"000000010274","state":"MO","issuer":"ESSENCE HEALTH PLAN"},{"type_code":"01","label":"Other","value":"027001","state":null,"issuer":"PROVIDER NUMBER"},{"type_code":"01","label":"Other","value":"116650","state":"MO","issuer":"HEALTHLINK"},{"type_code":"01","label":"Other","value":"1719340","state":"MO","issuer":"CIGNA"},{"type_code":"05","label":"Medicaid","value":"201617214","state":"MO","issuer":null},{"type_code":"01","label":"Other","value":"3600048","state":"MO","issuer":"UNITED HEALTHCARE"},{"type_code":"01","label":"Other","value":"2055735","state":"MO","issuer":"AETNA"},{"type_code":"01","label":"Other","value":"BLC001420600","state":null,"issuer":"PROVIDER NUMBER"},{"type_code":"01","label":"Other","value":"5598523","state":null,"issuer":"PROVIDER NUMBER"}],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20090326000635","type_code":"14-90","type_desc":"PRACTITIONER - MEDICAL ONCOLOGY","state":"MO","pac_id":"3678676848"}]},"enumeration_date":"2005-11-17","last_updated":"2008-12-15","_meta":{"source":"NPPES","snapshot_date":"2008-12-15","doc_url":"https://findmynpi.com/api"}}