{"npi":"1699749788","type":"NPI-1","status":"active","name":{"display":"Dr. William Prominski MD","other":[{"code":"5","type":"Also known as","value":"PROMINSKI, BILL EDMUND"}],"first":"WILLIAM","last":"PROMINSKI","middle":"EDMUND","credential":"MD"},"specialty":{"primary_taxonomy":"2085R0202X","primary_taxonomy_description":"Diagnostic Radiology","slug":"diagnostic-radiology","schema_org_specialty":"Radiography","all":[{"code":"2085R0202X","description":"Diagnostic Radiology","primary":true,"state":"DC","license":"MD045791"},{"code":"2085R0202X","description":"Diagnostic Radiology","primary":false,"state":"VA","license":"0101041171"}]},"addresses":[{"purpose":"LOCATION","street_1":"5255 LOUGHBORO RD NW","city":"WASHINGTON","state":"DC","postal_code":"200162633","country_code":"US","phone":"2025374000"},{"purpose":"MAILING","street_1":"6201 GREENLEIGH AVE","city":"BALTIMORE","state":"MD","postal_code":"212202004","country_code":"US","phone":"4109336423","fax":"4105004266"}],"license":{"state":"DC","number":"MD045791"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20050126000405","type_code":"14-30","type_desc":"PRACTITIONER - DIAGNOSTIC RADIOLOGY","state":"DC","pac_id":"3274583414"},{"enrlmt_id":"I20080211000857","type_code":"14-30","type_desc":"PRACTITIONER - DIAGNOSTIC RADIOLOGY","state":"VA","pac_id":"3274583414"},{"enrlmt_id":"I20181205001646","type_code":"14-30","type_desc":"PRACTITIONER - DIAGNOSTIC RADIOLOGY","state":"MD","pac_id":"3274583414"}]},"enumeration_date":"2006-02-15","last_updated":"2026-05-21","_meta":{"source":"NPPES","snapshot_date":"2026-05-21","doc_url":"https://findmynpi.com/api"}}