Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Karen Mahoney-Malcomson, LMSW
Social Worker in West Hempstead, NY · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477734549
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Registry record
Entity type Individual (Type 1)
Name Ms. Karen Mahoney-Malcomson
Credential LMSW
Sex Female
Practice address 600 Hempstead Tpke, West Hempstead, NY, 11552
Phone (516) 481-2890
Fax (516) 481-2723
Enumeration date Nov 17, 2007
Last updated in NPPES Nov 17, 2007
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 073294-1 (NY) 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
Where does Karen Mahoney-Malcomson practice?
The practice location on file with NPPES is in West Hempstead, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Karen Mahoney-Malcomson?
The National Provider Identifier (NPI) for Karen Mahoney-Malcomson is 1477734549, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Richard Menzel Oral & Maxillofacial Surgery (D.M.D.) · West Hempstead, NY NPI 1770665259 Helena Solomon Mental Health Counselor · West Hempstead, NY NPI 1861601874 Barbara Gilbert Addiction (Substance Use Disorder) Counselor · West Hempstead, NY NPI 1427237155 Projeact Outreach Clinic/Center · W Hempstead, NY NPI 1740469154 Johan Mejia Clinical Social Worker · West Hempstead, NY NPI 1740604271 Urgdent Dental Care General Practice Dentistry · West Hempstead, NY NPI 1629458674 Skyeler Kopper Social Worker · West Hempstead, NY NPI 1275471815
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-17.