Thomas K. Marsh, Odsc
Thomas K. Marsh, Odsc is a healthcare organization registered as Optometrist in Oconomowoc, WI, holding Type 2 (organization) NPI 1649242967 since 2006. The authorized official on file is Laina Marsh, Office Manager.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1649242967 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Thomas K. Marsh, Odsc |
| Other name | <Unavail> |
| Practice address | 1280 SUMMIT AVE, Oconomowoc, WI, 53066 |
| Phone | 2625673214 |
| Fax | 2625672449 |
| Enumeration date | 2006-02-02 |
| Last updated in NPPES | 2008-06-27 |
Authorized official
| Name | Laina Marsh |
|---|---|
| Title | Office Manager |
| Phone | 2625673214 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 152W00000X | Optometrist | Primary | 1507-035 | WI |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 38564400 | Medicaid | WI | — |
Copy-ready billing details
Provider: Thomas K. Marsh, Odsc NPI: 1649242967 Taxonomy: 152W00000X (Optometrist) Address: 1280 SUMMIT AVE, Oconomowoc, WI, 53066
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1578556239 | Thomas Marsh | Individual | Optometrist | Oconomowoc, WI |
Verify this record
Cross-check NPI 1649242967 against the authoritative CMS record: view Thomas K. Marsh, Odsc on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
What type of organization is Thomas K. Marsh, Odsc?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-06-27.