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

Jaclyn A Kiernan, RDN

Individual provider Registered Dietitian · NPI 1659950822

Jaclyn A Kiernan, RDN is a Registered Dietitian in Smithtown, New York. Practices as a sole proprietor. Registered with an NPI since 2021.

In the registry since
2021
What do these letters mean?
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.

See every abbreviation used in this directory →

Practice location Address checks out

496 Smithtown Byp Ste 204
Smithtown, NY 11787-5011
Phone: (631) 371-3825
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 86075293

Record details

NPI number1659950822
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN
Sole proprietorYes
NPI enumeratedApril 6, 2021
Last updated in NPPESAugust 2, 2021
Certification dateJuly 7, 2021

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