Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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MS. Sonja C. Simzak, MS-MPH, RD, LDN

Individual provider Nutritionist · NPI 1083814289

MS. Sonja C. Simzak, MS-MPH, RD, LDN is a Nutritionist in Washington, District of Columbia. Licensed in Maryland. Registered with an NPI since 2007.

Licensed in
MD
In the registry since
2007
Specialties on file
2
What do these letters mean?
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

5801 Army Pentagon Dilorenzo Pentagon Health Clinic
Washington, DC 20310
Phone: (036) 927-8898
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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 978644 (MD)
Nutritionist Taxonomy 133N00000X · Licence DX2932 (MD)

Record details

NPI number1083814289
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS-MPH , RD , LDN
Sole proprietorNo
NPI enumeratedJuly 25, 2007
Last updated in NPPESFebruary 2, 2023
Certification dateFebruary 2, 2023

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