{"npi":"1043233166","type":"NPI-1","status":"active","name":{"display":"John Walczyk M.D.","other":[],"first":"JOHN","last":"WALCZYK","middle":"STEVEN","credential":"M.D."},"specialty":{"primary_taxonomy":"207N00000X","primary_taxonomy_description":"Dermatology","slug":"dermatology","schema_org_specialty":"Dermatologic","all":[{"code":"207N00000X","description":"Dermatology","primary":true,"state":"NY","license":"191586"}]},"addresses":[{"purpose":"LOCATION","street_1":"1165 NORTHERN BLVD","city":"MANHASSET","state":"NY","postal_code":"110303048","country_code":"US","street_2":"SUITE 405","phone":"5163658030","fax":"5163658058"},{"purpose":"MAILING","street_1":"1165 NORTHERN BLVD","city":"MANHASSET","state":"NY","postal_code":"110303048","country_code":"US","street_2":"SUITE 405","phone":"5163658030","fax":"5163658058"}],"license":{"state":"NY","number":"191586"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20040323002038","type_code":"14-07","type_desc":"PRACTITIONER - DERMATOLOGY","state":"NY","pac_id":"2961393301"}]},"enumeration_date":"2006-07-26","last_updated":"2007-07-08","_meta":{"source":"NPPES","snapshot_date":"2007-07-08","doc_url":"https://findmynpi.com/api"}}