Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mallory Anne Marchionda, RD, LDN

Registered Dietitian in Lowell, MA · enumerated 2011.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1952699191

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Registry record

Entity type Individual (Type 1)

Name Mallory Anne Marchionda

Credential RD, LDN

Sex Female

Practice address 295 Varnum Ave, Lowell, MA, 01854

Phone (978) 937-6054

Fax (978) 937-6954

Enumeration date Jul 20, 2011

Last updated in NPPES Oct 8, 2014

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 2923 (MA) Primary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 0557 (NH) Secondary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mallory Marchionda?

Mallory Marchionda is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-08.