Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Janna Sandmeyer
Psychologist in Washington, DC · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821829516
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Registry record
Entity type Individual (Type 1)
Name Janna Sandmeyer
Sex Female
Practice address 1112 16th St Nw Ste 440, Washington, DC, 20036
Phone (202) 306-6500
Enumeration date Aug 13, 2024
Last updated in NPPES Aug 13, 2024
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY1000287 (DC) 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 Janna Sandmeyer?
The National Provider Identifier (NPI) for Janna Sandmeyer is 1821829516, a Type 1 (individual) record in the CMS NPPES registry.
Where does Janna Sandmeyer practice?
The practice location on file with NPPES is in Washington, DC. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Corene Alvarado Psychologist · Washington, DC NPI 1518495597 Alexander Afram Clinical Psychologist · Washington, DC NPI 1942703533 Dylana Blum Clinical Psychologist · Washington, DC NPI 1568114585 Paul Higgins Clinical Social Worker · Washington, DC NPI 1073249785 Emma Weissfeld Clinical Social Worker · Washington, DC NPI 1851184972
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-13.