{"npi":"1225019151","type":"NPI-1","status":"active","name":{"display":"Dr. Diane Greer MD","other":[],"first":"DIANE","last":"GREER","middle":"CECILIA","credential":"MD"},"specialty":{"primary_taxonomy":"2084P0805X","primary_taxonomy_description":"Geriatric Psychiatry Physician","slug":"geriatric-psychiatry-physician","schema_org_specialty":null,"all":[{"code":"2084P0800X","description":"Psychiatry","primary":false,"state":"MA","license":"71019"},{"code":"2084P0805X","description":"Geriatric Psychiatry Physician","primary":true,"state":"MA","license":"71019"}]},"addresses":[{"purpose":"LOCATION","street_1":"151 EVERETTE AVE CHC","city":"CHELSEA","state":"MA","postal_code":"021501807","country_code":"US","street_2":"CHELSEA HEALTHCARE CENTER","phone":"6178898515","fax":"6178898509"},{"purpose":"MAILING","street_1":"PO BOX 9142","city":"CHARLESTOWN","state":"MA","postal_code":"021299142","country_code":"US","street_2":"MASS GENERAL PHYSICIAN ORGANIZATION","phone":"6177240287","fax":"6177262894"}],"license":{"state":"MA","number":"71019"},"identifiers":[{"type_code":"01","label":"Other","value":"724285","state":"MA","issuer":"TUFTS HEALTH PLAN"}],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20051029000155","type_code":"14-26","type_desc":"PRACTITIONER - PSYCHIATRY","state":"MA","pac_id":"4284651134"}]},"enumeration_date":"2005-11-08","last_updated":"2025-09-11","_meta":{"source":"NPPES","snapshot_date":"2025-09-11","doc_url":"https://findmynpi.com/api"}}