Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marlena Castro
Social Worker in Newark, NJ · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427506088
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Marlena Castro
Sex Female
Practice address 590 N 7th St, Newark, NJ, 07107
Phone (973) 596-3835
Enumeration date Sep 13, 2016
Last updated in NPPES Sep 13, 2016
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 44SL050908300 (NJ) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
How do I verify Marlena Castro's NPI record?
Cross-check NPI 1427506088 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1427506088 active?
Yes, as of the latest NPPES snapshot, NPI 1427506088 is active (record last updated 2016-09-13).
Other providers at this practice address
Browse all → Mount Carmel Guild Behavioral Health System Community/Behavioral Health Agency · Newark, NJ NPI 1417223140 Jeannette Guzman Mental Health Counselor · Newark, NJ NPI 1366872202 Catholic Charities of the Archdiocese of Newark Community/Behavioral Health Agency · Newark, NJ NPI 1982034815 Mount Carmel Guild Behavioral Health System Mental Health Clinic/Center (Including Community Mental Health Center) · Newark, NJ NPI 1689074601 Ruth Viera Clinical Social Worker · Newark, NJ NPI 1003293853 Dawn Conroy Clinical Social Worker · Newark, NJ NPI 1497130785 Ileana Hernandez Clinical Social Worker · Newark, NJ NPI 1164052833 Ashley Escobar Mental Health Counselor · Newark, NJ NPI 1003605270
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-13.