Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tricia G Greenwood, RDN, LDN

Registered Dietitian in Joliet, IL · enumerated 2006.

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

National Provider Identifier

1700842572

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Registry record

Entity type Individual (Type 1)

Name Tricia G Greenwood

Credential RDN, LDN

Sex Female

Practice address 333 Madison St, Joliet, IL, 60435

Phone (815) 723-7133

Enumeration date Apr 21, 2006

Last updated in NPPES Apr 4, 2016

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 164-003953 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
P00510176	Other	IL	RAIL ROAD MEDICARE

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 Tricia Greenwood?

Tricia Greenwood 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 2016-04-04.