NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr J J Marsh Ltd

Optometrist in Oshkosh, WI · enumerated 2006 · authorized official Jeffrey Marsh, Optometrist/Owner.

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

National Provider Identifier

1366552663

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Dr J J Marsh Ltd
Practice address 2510 W. 9th Ave, Oshkosh, WI, 54904
Phone (920) 426-2020
Fax (920) 235-3195
Enumeration date Aug 30, 2006
Last updated in NPPES Apr 26, 2017

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 2161 (WI) Primary

Authorized official

Name Jeffrey Marsh
Title Optometrist/Owner
Phone (920) 426-2020

Other identifiers

Identifier Type State Issuer
2161 Other WI STATE LICENSE
38529700 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Dr J J Marsh Ltd?
NPPES lists Jeffrey Marsh (Optometrist/Owner) as the authorized official for this organization.
What is the NPI number for Dr J J Marsh Ltd?
The NPI for Dr J J Marsh Ltd is 1366552663, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-26.