Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Catherine Anne Johnson, O.D.
Optometrist in Nashua, NH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1083822696
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Registry record
Entity type Individual (Type 1)
Name Dr. Catherine Anne Johnson
Credential O.D.
Sex Female
Practice address 505 W Hollis St Ste 109, Nashua, NH, 03062
Phone (603) 882-0311
Enumeration date May 18, 2007
Last updated in NPPES Feb 28, 2024
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 5068093 | Other | MA | AETNA |
| MA4575 | Other | MA | EYEMED |
| 0044301 | Other | MA | NHP |
| 95823001 | Other | MA | NETWORK HEALTH |
| 0712906 | Medicaid | MA | - |
| 9679519 | Other | MA | CIGNA |
| AA89356 | Other | MA | HARVARD PILGRIM |
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 1083822696, a Type 1 (individual) record in the CMS NPPES registry.
Where does Catherine Johnson practice?
The practice location on file with NPPES is in Nashua, NH. 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 2024-02-28.