NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Erin R Switzer, OD

Optometrist in Marshall, IL · enumerated 2014 · practices at Eyes on Main Pllc.

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

National Provider Identifier

1962819342

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Erin R Switzer
Credential OD
Sex Female
Practice address 608 Archer Ave, Marshall, IL, 62441
Phone (618) 819-0308
Fax (618) 819-0307
Enumeration date Jul 17, 2014
Last updated in NPPES Jan 3, 2024

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 18003857 (IN) Primary
152W00000X Optometrist Eye and Vision Services Providers · License 046011048 (IL) Secondary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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 Erin Switzer?
The National Provider Identifier (NPI) for Erin Switzer is 1962819342, a Type 1 (individual) record in the CMS NPPES registry.
Where does Erin Switzer practice?
The practice location on file with NPPES is in Marshall, IL. 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 2024-01-03.