Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maria Tadic, RD

Registered Dietitian in Fairfax, VA · enumerated 2015.

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

National Provider Identifier

1427436062

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Registry record

Entity type Individual (Type 1)

Name Maria Tadic

Credential RD

Sex Female

Practice address 3580 Joseph Siewick Dr Ste 205, Fairfax, VA, 22033

Phone (703) 620-3211

Fax (703) 620-3215

Enumeration date May 15, 2015

Last updated in NPPES Jul 14, 2026

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86001017 Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Maria Tadic?

Maria Tadic 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-14.