Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Rachel Van Oss, MD

Public Health & General Preventive Medicine Physician in Grand Rapids, MI · enumerated 2009.

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

National Provider Identifier

1801020474

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Registry record

Entity type Individual (Type 1)

Name Katherine Rachel Van Oss

Credential MD

Sex Female

Practice address 4069 Lake Dr Se Ste 118, Grand Rapids, MI, 49546

Phone (616) 267-8520

Enumeration date May 11, 2009

Last updated in NPPES Dec 11, 2023

Taxonomy & licenses

2083P0901X Public Health & General Preventive Medicine Physician Allopathic & Osteopathic Physicians · License 4301510374 (MI) 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

What is the NPI number for Katherine Van Oss?

The National Provider Identifier (NPI) for Katherine Van Oss is 1801020474, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katherine Van Oss practice?

The practice location on file with NPPES is in Grand Rapids, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-11.