Individual provider · Type 1 NPI

Clarissa Thannen, RD, LD

Registered Dietitian · Springfield, IL

NPI number 1558273631 Active

Practice location

751 N Rutledge St Ste 1700
Springfield, IL 62702-4968

Specialties and licenses

TaxonomyCodeLicense
Registered Dietitian Primary 133V00000X164025792 (IL)

Registered Dietitian: A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the…

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About NPI 1558273631

Clarissa Thannen, RD, LD's National Provider Identifier is 1558273631, issued on Sep 22, 2026. The primary taxonomy on file is Registered Dietitian (133V00000X), and the practice location is in Springfield, IL. The record was last updated on Sep 22, 2026.