Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Zachary Alan Rehfus, DO

Pediatrics Physician in Holland, MI · enumerated 2022.

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

National Provider Identifier

1083343529

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Registry record

Entity type Individual (Type 1)

Name Dr. Zachary Alan Rehfus

Credential DO

Sex Male

Practice address 602 Michigan Ave, Holland, MI, 49423

Phone (616) 394-3501

Enumeration date Jun 9, 2022

Last updated in NPPES Jul 1, 2025

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 5101028675 (MI) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 1083343529 active?

Yes, as of the latest NPPES snapshot, NPI 1083343529 is active (record last updated 2025-07-01).

How do I verify Zachary Rehfus's NPI record?

Cross-check NPI 1083343529 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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William Frauenheim Cardiovascular Disease Physician · Holland, MI NPI 1497746952 Thomas Wolf Physician Assistant · Holland, MI NPI 1629059480 Western Michigan Pathology Associates, LLC Anatomic Pathology & Clinical Pathology Physician · Holland, MI NPI 1053394080 Edward Fody Anatomic Pathology & Clinical Pathology Physician · Holland, MI NPI 1619950649 Lee Ruotsi Undersea and Hyperbaric Medicine (Preventive Medicine) Physician · Holland, MI NPI 1376504605 Donald Fix Emergency Medical Services (Emergency Medicine) Physician · Holland, MI NPI 1588621239 Timothy Gezon Emergency Medical Services (Emergency Medicine) Physician · Holland, MI NPI 1770541328 Scott Loos Emergency Medical Services (Emergency Medicine) Physician · Holland, MI NPI 1427006964

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