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

Ann Porter, RDN, LDN

Individual provider Registered Dietitian · NPI 1578932844

Ann Porter, RDN, LDN is registered under Registered Dietitian OR Nutrition Professional in Rockville, Maryland. Qualified in 2012, 14 years ago. Accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
14
Licensed in
MD
In the registry since
2015
Specialties on file
2
What do these letters mean?
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

1201 Seven Locks Rd
Rockville, MD 20854-2931
Phone: (301) 263-7319
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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 DX3838 (MD)
Registered Dietitian Taxonomy 133V00000X

Record details

NPI number1578932844
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN , LDN
Sole proprietorNo
NPI enumeratedSeptember 17, 2015
Last updated in NPPESJuly 7, 2021
Certification dateJuly 7, 2021

Medicare enrollment

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

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients11
Services billed 125 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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