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

Margaret Louise Mangan, RDN

Individual provider Nutritionist · NPI 1215386685

Margaret Louise Mangan, RDN is registered under Registered Dietitian OR Nutrition Professional in Raleigh, North Carolina. Qualified in 2008, 18 years ago. Practices with Rex Hospital Inc, a 15-clinician group and accepts Medicare assignment. Licensed in North Carolina.

Years since qualifying
18
Licensed in
NC
In the registry since
2016
Specialties on file
2
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

4200 Lake Boone Trl
Raleigh, NC 27607-6521
Phone: (919) 784-3419
Fax: (919) 784-3094
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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 L004314 (NC)
Nutritionist Taxonomy 133N00000X · Licence L004314 (NC)

Record details

NPI number1215386685
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN
Sole proprietorNo
NPI enumeratedJune 7, 2016
Last updated in NPPESApril 2, 2026
Certification dateApril 2, 2026

Medicare enrollment

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

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Rex Hospital Inc — 15 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Colleagues at Rex Hospital Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 15 clinicians in the practice; 12 are shown here.

Other providers in Raleigh