Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Abigail Debera Hallmark, MS, RDN, LDN

Individual provider Registered Dietitian · NPI 1043836315

Abigail Debera Hallmark, MS, RDN, LDN is a Registered Dietitian in Saint Louis, Missouri. Practices as a sole proprietor. Licensed in Missouri.

Licensed in
MO
In the registry since
2020
What do these letters mean?
MS — Master of Science
A graduate science degree.
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.
LDN — Licensed Dietitian Nutritionist
A state-licensed dietitian nutritionist.

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Practice location Address checks out

3510 Wyoming St Apt A
Saint Louis, MO 63118-2021
Phone: (814) 860-0291
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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 2019029413 (MO)

Record details

NPI number1043836315
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , RDN , LDN
Sole proprietorYes
NPI enumeratedJune 22, 2020
Last updated in NPPESJune 22, 2020
Certification dateJune 22, 2020

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