Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Emma Elizabeth Johnsen, LMSW
Social Worker in Mastic Beach, NY · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1407620966
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Registry record
Entity type Individual (Type 1)
Name Emma Elizabeth Johnsen
Credential LMSW
Sex Female
Practice address 468 Main St, Mastic Beach, NY, 11951
Phone (631) 772-6219
Enumeration date Nov 14, 2023
Last updated in NPPES Nov 14, 2023
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 121597-01 (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
What is the NPI number for Emma Johnsen?
The National Provider Identifier (NPI) for Emma Johnsen is 1407620966, a Type 1 (individual) record in the CMS NPPES registry.
Where does Emma Johnsen practice?
The practice location on file with NPPES is in Mastic Beach, NY. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Holly Gordon Social Worker · Mastic Beach, NY NPI 1215169602 Monique Montgomery Social Worker · Mastic Beach, NY NPI 1891468237 Community Counseling Too Lcsw Services Pllc Clinical Social Worker · Mastic Beach, NY NPI 1619707650 Counseling Connections Community Center Inc Clinical Social Worker · Mastic Beach, NY NPI 1851116321 Valerie Surdi Social Worker · Mastic Beach, NY NPI 1700693421
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-14.