Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Reader, MD

Student in an Organized Health Care Education/Training Program in Appleton, WI · enumerated 2025 · practices at Mosaic Family Health, Inc.

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

National Provider Identifier

1598559163

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Registry record

Entity type Individual (Type 1)

Name Matthew Reader

Credential MD

Sex Male

Practice address 100 N Oneida St, Appleton, WI, 54911

Phone (920) 832-2783

Enumeration date Apr 8, 2025

Last updated in NPPES May 1, 2025

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1598559163 active?

Yes, as of the latest NPPES snapshot, NPI 1598559163 is active (record last updated 2025-05-01).

How do I verify Matthew Reader's NPI record?

Cross-check NPI 1598559163 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Mosaic Family Health, Inc Family Medicine Physician · Appleton, WI NPI 1548653389 Richard Robertson Student in an Organized Health Care Education/Training Program · Appleton, WI NPI 1942943063 Emily Calba Student in an Organized Health Care Education/Training Program · Appleton, WI NPI 1386380012 Christian Widder Student in an Organized Health Care Education/Training Program · Appleton, WI NPI 1861242018 Joseph Harter Student in an Organized Health Care Education/Training Program · Appleton, WI NPI 1487404661 Jenna Kautzer Student in an Organized Health Care Education/Training Program · Appleton, WI NPI 1720838154 Alexa Teerlinck Student in an Organized Health Care Education/Training Program · Appleton, WI NPI 1942051701 Domose Enodunmwenben Student in an Organized Health Care Education/Training Program · Appleton, WI NPI 1679377212

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-01.