Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Mary Ellen Ruggiero, RN HCSW
School Social Worker in Essex, CT · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861595373
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Registry record
Entity type Individual (Type 1)
Name Ms. Mary Ellen Ruggiero
Credential RN HCSW
Sex Female
Practice address 28 Main St, Essex, CT, 06426
Phone (860) 767-1517
Fax (860) 767-7703
Enumeration date Sep 7, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
1041S0200X School Social Worker Behavioral Health & Social Service Providers · License 003045 (CT) 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
Is NPI 1861595373 active?
Yes, as of the latest NPPES snapshot, NPI 1861595373 is active (record last updated 2007-07-08).
How do I verify Mary Ellen Ruggiero's NPI record?
Cross-check NPI 1861595373 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Suzanne Derry Clinical Psychologist · Essex, CT NPI 1356362347 Stuart Fisher Clinical Psychologist · Essex, CT NPI 1558375063 Kim Dematteo Clinical Social Worker · Essex, CT NPI 1467466979 Michael Barrios Clinical Psychologist · Essex, CT NPI 1609950781 Lisa Silberstein Psychologist · Essex, CT NPI 1508945965 Elizabeth Hale Clinical Social Worker · Essex, CT NPI 1861561755 The Center for Psychotherapy, Inc. Clinical Psychologist · Essex, CT NPI 1902000672 Kamilla Gardner Marriage & Family Therapist · Essex, CT NPI 1265615884
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.