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Provider Profile

Clarissa Thannen, RD, LD

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At a glance

About Clarissa Thannen

Clarissa Thannen, RD, LD is a registered dietitian / nutritionist based in Springfield, IL. The provider's National Provider Identifier (NPI) is 1558273631.

Factual summary compiled by Guide.md from public records; not written by this provider.

Credentials & Licensing

IL licenceAs reported to the NPI registry
No. 164025792As reported
NPINational Provider Identifier
1558273631Issued 2026

As reported to the NPI registry ↗

Common questions

What kind of doctor is Clarissa Thannen, RD?

Clarissa Thannen, RD is a registered dietitian / nutritionist in Springfield, IL. That is the designation recorded for this NPI in the federal registry.

NPI registry

What is Clarissa Thannen, RD's address?

Clarissa Thannen, RD is listed at 751 N Rutledge St Ste 1700, Springfield, IL 62702. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Clarissa Thannen, RD?

The number on file is (217) 545-8000. Contact the office directly to confirm availability and scheduling.

NPI registry

What is the NPI for Clarissa Thannen, RD?

Clarissa Thannen, RD's National Provider Identifier is 1558273631. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Is Clarissa Thannen, RD's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by Clarissa Thannen, RD. If this is you, claiming it is free.

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