Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Nathaniel B Willis, PHD, RD, LDN

Individual provider Registered Dietitian · NPI 1376420992

Nathaniel B Willis, PHD, RD, LDN is a Registered Dietitian in Madison, Wisconsin. Practices as a sole proprietor. Registered with an NPI since 2025.

In the registry since
2025
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
RD — Registered Dietitian
A credentialed nutrition professional.
LDN — Licensed Dietitian Nutritionist
A state-licensed dietitian nutritionist.

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Practice location Address checks out

4018 Paunack Ave
Madison, WI 53711-1625
Phone: (402) 681-7964
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X

Record details

NPI number1376420992
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD , RD , LDN
Sole proprietorYes
NPI enumeratedAugust 18, 2025
Last updated in NPPESAugust 18, 2025
Certification dateAugust 17, 2025
Mailing address4018 Paunack Ave, Madison, WI 53711-1625

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