Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mallory Flager, RDN

Individual provider Registered Dietitian · NPI 1831890979

Mallory Flager, RDN is registered under Registered Dietitian OR Nutrition Professional in Philadelphia, Pennsylvania. Graduated from Univ of Pittsburgh School of Dental Medicine in 2011, 15 years ago. Practices with Jefferson University Physicians, a 1,554-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
15
Trained at
Univ of Pittsburgh School of Dental Medicine
Licensed in
PA
In the registry since
2023
What do these letters mean?
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.

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Practice location Address checks out

833 Chestnut St Fl 1
Philadelphia, PA 19107-4404
Phone: (215) 932-6165
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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 DN004683 (PA)

Record details

NPI number1831890979
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN
Sole proprietorNo
NPI enumeratedMarch 15, 2023
Last updated in NPPESMarch 15, 2023
Certification dateMarch 15, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolUNIV OF PITTSBURGH SCHOOL OF DENTAL MEDICINE
Graduated 2011 (15 years in practice)
Group practice Jefferson University Physicians — 1554 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Colleagues at Jefferson University Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1554 clinicians in the practice; 12 are shown here.

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