NPPES file of Aug 9, 2026

Mallory Flager, RDN

Registered Dietitian · Philadelphia, PA

Mallory Flager, RDN is a registered dietitian with a practice address in Philadelphia, Pennsylvania, and NPI 1831890979, issued on Mar 15, 2023. Check the license (Pennsylvania DN004683, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831890979
Name
Mallory Flager
Credential
RDN
Primary taxonomy
Registered Dietitian 133V00000X
License number
DN004683 PA
Self-reported in NPPES; status is on the state search
Practice location
833 Chestnut St FL 1, Philadelphia, PA 19107
Phone
(215) 932-6165
Enumerated
Mar 15, 2023
Record last updated
Mar 15, 2023
Medicare enrollment
Enrolled (PECOS I20240302000592); accepts Medicare assignment
Medical or professional school
Univ Of Pittsburgh School Of Dental Medicine, 2011
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 3,083 in Pennsylvania → Look up another NPI →

Also registered at 833 Chestnut St FL 1

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ines Aguerre Lopez, MDStudent in an Organized Health Care Education/Training Program1235924283
  2. Amelia Alberts, MDStudent in an Organized Health Care Education/Training Program1174460265
  3. Adriana Baez, MD, JDStudent in an Organized Health Care Education/Training Program1649065517
  4. Agatha BergerObstetrics & Gynecology Physician1609192988
  5. Katherine Bodycot, MDStudent in an Organized Health Care Education/Training Program1477349074
  6. Olivia BrittonStudent in an Organized Health Care Education/Training Program1487449377

Verify Mallory Flager in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license DN004683    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Jefferson University PhysiciansPhiladelphia, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mallory Flager among 3,083 registered dietitian records in Pennsylvania

Mallory Flager, RDN is one of 3,083 registered dietitian records with a practice address in Pennsylvania. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 77% of them.

  • NPI issued2023 · 77% of these records are older, 18% newer
  • In a Medicare fileYes · 8% of these records are
  • In the CMS Doctors and Clinicians fileYes · 10% of these records are
  • Graduated2011 · median 2014 among the 315 with a school on file
  • Record last updated2023 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Registered Dietitian providers in Pennsylvania

There are 3,083 registered dietitian records in Pennsylvania.

All 3,083 in Pennsylvania → Every provider in Philadelphia → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Barbara Bender, RD LDNPhiladelphia, PA 191071487971917
  2. Zachari Breeding, RD, LDNPhiladelphia, PA 191071992129522
  3. Lynne Bucovetsky, RD, LDN, CDE, CFIPhiladelphia, PA 191071285831479
  4. Monica Crawford, R.D., L.D.N., C.S.O.Philadelphia, PA 191071881048346
  5. Frank Duffy, RDPhiladelphia, PA 191071356643472
  6. Jacqueline Dwyer, RD, CDEPhila, PA 191071629201462
  7. Carey Emmons, R.D.,L.D.N.Philadelphia, PA 191071811147929
  8. Catherine Gill, R.D.Philadelphia, PA 191071770907214

Common questions

What is Mallory Flager, RDN's NPI number?

Mallory Flager, RDN's National Provider Identifier (NPI) is 1831890979, issued on Mar 15, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Mallory Flager, RDN located?

The NPPES record lists a practice address at 833 Chestnut St FL 1, Philadelphia, PA, 19107. Phone: (215) 932-6165. Providers update this record themselves, so call before visiting.

How can I verify Mallory Flager, RDN's license?

NPPES lists Pennsylvania license number DN004683, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.