Ann Porter, RDN, LDN
Registered Dietitian · Rockville, MD
Ann Porter, RDN, LDN is a registered dietitian with a practice address in Rockville, Maryland, and NPI 1578932844, issued on Sep 17, 2015. Check the license (Maryland DX3838, as entered in NPPES) with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ann Porter
- Credential
- RDN, LDN
- Primary taxonomy
- Registered Dietitian 133V00000X
- License number
- DX3838 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1201 Seven Locks RD, Rockville, MD 20854
- Phone
- (301) 263-7319
- Enumerated
- Sep 17, 2015
- Record last updated
- Jul 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160215000412); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 1,124 in Maryland → Look up another NPI →
Also registered at 1201 Seven Locks RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ann Porter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license DX3838Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ann Porter among 1,124 registered dietitian records in Maryland
Ann Porter, RDN, LDN is one of 1,124 registered dietitian records with a practice address in Maryland. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2015, is newer than 39% of them.
- NPI issued2015 · 39% of these records are older, 56% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 13% of these records are
- Graduated2012 · median 2015 among the 143 with a school on file
- Record last updated2021 · 62% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Registered Dietitian providers in Maryland
There are 1,124 registered dietitian records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,124 in Maryland → Every provider in Rockville → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Katherine Brown, MS, RDPotomac, MD 208541295352342
- Beth Dorman, MS,RDN,LDNPotomac, MD 208541740976331
- Natalie Eatedali, MS, RD, CDNPotomac, MD 208541114154689
- Sarah Johnston, RDPotomac, MD 208541891301958
- Juli Louttit, RDPotomac, MD 208541750737888
- Lynda McIntyrePotomac, MD 208541891871513
- Carolyn Miller, RDRockville, MD 208541205927548
- Daniela Quiros, RDNRockville, MD 208541346867066
Common questions
What is Ann Porter, RDN, LDN's NPI number?
Ann Porter, RDN, LDN's National Provider Identifier (NPI) is 1578932844, issued on Sep 17, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ann Porter, RDN, LDN located?
The NPPES record lists a practice address at 1201 Seven Locks RD, Rockville, MD, 20854. Phone: (301) 263-7319. Providers update this record themselves, so call before visiting.
How can I verify Ann Porter, RDN, LDN's license?
NPPES lists Maryland license number DX3838, as entered by the provider. Search the Maryland 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. An NPI identifies who bills; it is not a license.
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.