Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Margaret Susan Mayer Herzfeld, MS, RD, CD

Individual provider Registered Dietitian · NPI 1992820252

MS. Margaret Susan Mayer Herzfeld, MS, RD, CD is a Registered Dietitian in Milwaukee, Wisconsin. Practices as a sole proprietor. Registered with an NPI since 2007.

In the registry since
2007
What do these letters mean?
MS — Master of Science
A graduate science degree.
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

2025 E Newport Ave
Milwaukee, WI 53211-2906
Phone: (414) 961-3660
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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 number1992820252
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , RD , CD
Sole proprietorYes
NPI enumeratedMarch 19, 2007
Last updated in NPPESJuly 8, 2007

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