Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John V Vanarendonk, MD

Emergency Medicine Physician in Kalispell, MT · enumerated 2006.

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

National Provider Identifier

1801833421

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Registry record

Entity type Individual (Type 1)

Name John V Vanarendonk

Credential MD

Sex Male

Practice address 310 Sunnyview Ln, Emergency Dept, Kalispell, MT, 59901

Phone (406) 752-1708

Fax (406) 755-0971

Enumeration date Jun 1, 2006

Last updated in NPPES Jan 21, 2026

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 6150 (MT) Primary

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

Other identifiers

Identifier	Type	State	Issuer
152728	Medicaid	MT	-
93126	Other	MT	BLUE CROSS

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 1801833421 active?

Yes, as of the latest NPPES snapshot, NPI 1801833421 is active (record last updated 2026-01-21).

How do I verify John Vanarendonk's NPI record?

Cross-check NPI 1801833421 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 2026-01-21.