Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marcus Korcz, MSW, LMSW
Social Worker in Newington, CT · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1386212371
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Marcus Korcz
Credential MSW, LMSW
Sex Male
Practice address 555 Willard Ave, Newington, CT, 06111
Phone (860) 666-6951
Enumeration date Jun 15, 2021
Last updated in NPPES Oct 17, 2022
Taxonomy & licenses
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Marcus Korcz?
Marcus Korcz is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Donald Curran Internal Medicine Physician · Newington, CT NPI 1033111356 Eugene Constantinou Internal Medicine Physician · Newington, CT NPI 1265434526 Nadine Cartwright-Lowe Internal Medicine Physician · Newington, CT NPI 1760484513 Juan Lopez Dentist · Newington, CT NPI 1861471682 Syed Ali Family Medicine Physician · Newington, CT NPI 1508831256 West Haven Vamc Department of Veterans Affairs (VA) Pharmacy · Newington, CT NPI 1821056086 Melinda Smith Adult Health Nurse Practitioner · Newington, CT NPI 1194773093 Ronald Nardi Psychiatric/Mental Health Nurse Practitioner · Newington, CT NPI 1578513677
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-17.