Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diana Dee Johnson, RDO
Optician in Carson City, NV · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1437643335
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Registry record
Entity type Individual (Type 1)
Name Diana Dee Johnson
Credential RDO
Sex Female
Practice address 3839 N Carson St, Carson City, NV, 89706
Phone (775) 297-4453
Fax (775) 841-2020
Enumeration date Jun 14, 2018
Last updated in NPPES Jun 14, 2018
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Diana Johnson?
Diana Johnson is registered in NPPES with the primary taxonomy of Optician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Michael Fischer Ophthalmology Physician · Carson City, NV NPI 1588660815 Eye Surgery Center of Nevada Ambulatory Surgical Clinic/Center · Carson City, NV NPI 1528064854 Optical Centers of Nevada Eyewear Supplier · Carson City, NV NPI 1073638128 Michael J Fischer, MD Ltd Ophthalmology Physician · Carson City, NV NPI 1669773644
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-14.