{"npi":"1710249529","type":"NPI-1","status":"active","name":{"display":"William Ergen M.D.","other":[],"first":"WILLIAM","last":"ERGEN","middle":"FREDERICK","credential":"M.D."},"specialty":{"primary_taxonomy":"207RG0100X","primary_taxonomy_description":"Gastroenterology","slug":"gastroenterology","schema_org_specialty":"Gastroenterologic","all":[{"code":"207RG0100X","description":"Gastroenterology","primary":true,"state":"TN","license":"51868"}]},"addresses":[{"purpose":"LOCATION","street_1":"1311 DOWELL SPRINGS BLVD","city":"KNOXVILLE","state":"TN","postal_code":"379092454","country_code":"US","phone":"8655885121"},{"purpose":"MAILING","street_1":"1311 DOWELL SPRINGS BLVD","city":"KNOXVILLE","state":"TN","postal_code":"379092454","country_code":"US","phone":"8655885121","fax":"8655882126"}],"license":{"state":"TN","number":"51868"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20180910001643","type_code":"14-10","type_desc":"PRACTITIONER - GASTROENTEROLOGY","state":"TN","pac_id":"5698077824"}]},"enumeration_date":"2012-06-08","last_updated":"2025-04-10","_meta":{"source":"NPPES","snapshot_date":"2025-04-10","doc_url":"https://findmynpi.com/api"}}