Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Chad A Johnson, OD
Optometrist in Baraboo, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720030133
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Registry record
Entity type Individual (Type 1)
Name Chad A Johnson
Credential OD
Sex Male
Practice address 1626 Tuttle St, Suite 1, Baraboo, WI, 53913
Phone (608) 356-2020
Fax (680) 356-6787
Enumeration date May 16, 2006
Last updated in NPPES Jan 22, 2016
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 |
|---|---|---|---|
| 1720030133 | Medicaid | WI | - |
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 NPI 1720030133 active?
Yes, as of the latest NPPES snapshot, NPI 1720030133 is active (record last updated 2016-01-22).
How do I verify Chad Johnson's NPI record?
Cross-check NPI 1720030133 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-22.