Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas E Boulden, OD

Optometrist in Tomah, WI · enumerated 2005.

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

National Provider Identifier

1427052182

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Registry record

Entity type Individual (Type 1)

Name Thomas E Boulden

Credential OD

Sex Male

Practice address 325 Butts Ave, Tomah, WI, 54660

Phone (608) 372-5951

Enumeration date Jun 10, 2005

Last updated in NPPES Sep 16, 2020

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2618 (WI) Primary

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.

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Frequently asked questions

What specialty is Thomas Boulden?

Thomas Boulden 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.

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.

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Jane Weiss Medical Physician Assistant · Tomah, WI NPI 1245235662 Sharel Martin Emergency Medicine Physician · Tomah, WI NPI 1114917648 Michael Saunders Family Medicine Physician · Tomah, WI NPI 1558351056 Willard Schanhofer Family Medicine Physician · Tomah, WI NPI 1730179862 Michael Stark Family Medicine Physician · Tomah, WI NPI 1649260779 Stacey Sperlingas Family Medicine Physician · Tomah, WI NPI 1295790822 Alfred Oyler Physical Therapist · Tomah, WI NPI 1811072879 Lisa Clark Clinical Social Worker · Tomah, WI NPI 1194888222

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-16.