NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Chrystal Lynn Johnson

Optician in Grove City, OH · enumerated 2023.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1841995594

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Registry record

Entity type Individual (Type 1)
Name Mrs. Chrystal Lynn Johnson
Sex Female
Practice address Grove City, OH, 43123
Phone (614) 539-8640
Fax (614) 539-8644
Enumeration date Apr 3, 2023
Last updated in NPPES Apr 3, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License OP.010042-SC (OH) Primary
156FX1800X Optician Eye and Vision Services Providers · License OP.010042.SC (OH) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Chrystal Johnson?
The National Provider Identifier (NPI) for Chrystal Johnson is 1841995594, a Type 1 (individual) record in the CMS NPPES registry.
Where does Chrystal Johnson practice?
The practice location on file with NPPES is in Grove City, OH. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-03.