Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lauren Halladay, PHD
Psychologist in Newton, MA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1245958180
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Registry record
Entity type Individual (Type 1)
Name Lauren Halladay
Credential PHD
Sex Female
Practice address 55 Chapel St Ste 202, Newton, MA, 02458
Phone (617) 658-9800
Enumeration date Aug 17, 2022
Last updated in NPPES Aug 17, 2022
Taxonomy & licenses
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
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 Lauren Halladay?
The National Provider Identifier (NPI) for Lauren Halladay is 1245958180, a Type 1 (individual) record in the CMS NPPES registry.
Where does Lauren Halladay practice?
The practice location on file with NPPES is in Newton, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-17.