Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Harper, MD

Sports Medicine (Physical Medicine & Rehabilitation) Physician in Green Bay, WI · enumerated 2017.

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

National Provider Identifier

1821529355

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Harper

Credential MD

Sex Male

Practice address 2223 Lime Kiln Rd, Green Bay, WI, 54311

Phone (920) 430-8113

Enumeration date Mar 26, 2017

Last updated in NPPES Apr 22, 2025

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 71372 (WI) Secondary

2081S0010X Sports Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 308613 (NY) Secondary

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

2081S0010X Sports Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 71372 (WI) 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 1821529355 active?

Yes, as of the latest NPPES snapshot, NPI 1821529355 is active (record last updated 2025-04-22).

How do I verify Michael Harper's NPI record?

Cross-check NPI 1821529355 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 2025-04-22.