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Marielle Antoinette Olson, RDN, LD

Registered Dietitian in St. Louis, MO · enumerated 2024 · practices at William Wang LLC.

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

National Provider Identifier

1720832165

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Registry record

Entity type Individual (Type 1)
Name Marielle Antoinette Olson
Credential RDN, LD
Sex Female
Practice address 12303 Depaul Drive, St. Louis, MO, 63044
Phone (144) 447-5663
Enumeration date Apr 12, 2024
Last updated in NPPES Apr 12, 2024

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 2021035174 (MO) Primary

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.

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Frequently asked questions

Where does Marielle Olson practice?
The practice location on file with NPPES is in St. Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marielle Olson?
The National Provider Identifier (NPI) for Marielle Olson is 1720832165, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-12.