Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Efthemia Greco, RDN, LDN

Registered Dietitian in Huntley, IL · enumerated 2020 · practices at Olive Branch Nutrition LLC.

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

National Provider Identifier

1033716345

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Registry record

Entity type Individual (Type 1)

Name Efthemia Greco

Credential RDN, LDN

Sex Female

Practice address Huntley, IL, 60142

Phone (630) 750-0955

Enumeration date Oct 8, 2020

Last updated in NPPES Nov 19, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 164004966 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
164004966	Other	IL	STATE LICENSURE

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

Where does Efthemia Greco practice?

The practice location on file with NPPES is in Huntley, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Efthemia Greco?

The National Provider Identifier (NPI) for Efthemia Greco is 1033716345, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Olive Branch Nutrition LLC Registered Dietitian · Huntley, IL NPI 1467051912

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-19.