NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Wayne G Slothouber, OD

Optometrist in Sioux Falls, SD · enumerated 2005 · practices at Howlin Vision Clinic, P.C..

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

National Provider Identifier

1710970371

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Wayne G Slothouber
Credential OD
Sex Male
Practice address 5129 S Western Ave, Sioux Falls, SD, 57108
Phone (605) 332-2231
Enumeration date Aug 29, 2005
Last updated in NPPES Mar 27, 2012

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 144 (SD) Primary
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
9201860 Medicaid SD -

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

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 Wayne Slothouber?
Wayne Slothouber is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-27.