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

Mr. Frank Nicholas Duffy, RD

Individual provider Registered Dietitian · NPI 1356643472

Mr. Frank Nicholas Duffy, RD is a Registered Dietitian in Philadelphia, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2010
What do these letters mean?
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

515 S 12th St Apt 4
Philadelphia, PA 19107
Phone: (267) 252-6584
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence DN003021 (PA)

Record details

NPI number1356643472
Entity typeIndividual (Type 1)
GenderMale
Credentials RD
Sole proprietorYes
NPI enumeratedNovember 22, 2010
Last updated in NPPESNovember 22, 2010

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