Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Catherine Johnson
Social Worker in Ithaca, NY · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255118816
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Registry record
Entity type Individual (Type 1)
Name Catherine Johnson
Sex Female
Practice address 127 W State St, Ithaca, NY, 14850
Phone (607) 273-7494
Enumeration date Sep 8, 2023
Last updated in NPPES Sep 8, 2023
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
What is the NPI number for Catherine Johnson?
The National Provider Identifier (NPI) for Catherine Johnson is 1255118816, a Type 1 (individual) record in the CMS NPPES registry.
Where does Catherine Johnson practice?
The practice location on file with NPPES is in Ithaca, NY. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Lorraine Moran Clinical Social Worker · Ithaca, NY NPI 1174579411 Jane Fisher Clinical Psychologist · Ithaca, NY NPI 1346460326 Kelley Cook Clinical Social Worker · Ithaca, NY NPI 1548456007 Claudia Lewenstein Clinical Social Worker · Ithaca, NY NPI 1780855841 Judith Clay Clinical Social Worker · Ithaca, NY NPI 1750549226 Karen Fritz Social Worker · Ithaca, NY NPI 1821257270 Chet Gates-Lupton Clinical Social Worker · Ithaca, NY NPI 1215196118 Helen Kaplan Social Worker · Ithaca, NY NPI 1184883720
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-08.