Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Melissa J Lathrop, COTA

Occupational Therapy Assistant in Watertown, WI · enumerated 2012 · practices at Marquardt Memorial Manor, Inc..

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

National Provider Identifier

1558619163

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Registry record

Entity type Individual (Type 1)

Name Melissa J Lathrop

Credential COTA

Sex Female

Practice address Watertown, WI, 53098

Phone (920) 206-4935

Enumeration date Aug 29, 2012

Last updated in NPPES Feb 26, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 4923-27 (WI) Primary

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

Is NPI 1558619163 active?

Yes, as of the latest NPPES snapshot, NPI 1558619163 is active (record last updated 2013-02-26).

How do I verify Melissa Lathrop's NPI record?

Cross-check NPI 1558619163 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-26.