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MS. EILEEN HOURIHAN MCCARTHY MFN, RDN, LDN, CPT,
NPI 1265673958
Dietitian, Registered in Oak Park, IL

Active since March 10, 2009
715 LAKE ST STE 220, OAK PARK, IL 60301(708) 285-1347(708) 356-6611 Get Directions Write a Review

NPPES record last updated: October 21, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Eileen Hourihan Mccarthy Mfn, Rdn, Ldn, Cpt, NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. EILEEN HOURIHAN MCCARTHY MFN, RDN, LDN, CPT, (NPI 1265673958) is an individual dietitian, registered in Oak Park, Illinois, licensed in Illinois (164.004823) and active in the NPI registry since March 2009.

NPPES Registry Identity

NPI1265673958
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameMS. EILEEN HOURIHAN MCCARTHYCredential: MFN, RDN, LDN, CPT,
Location Address715 LAKE ST STE 220Oak Park, IL 60301-1411
Mailing Address715 Lake St Ste 220Oak Park, IL 60301-1411 · (708) 285-1347 · Fax (708) 356-6611
Phone(708) 285-1347
Fax(708) 356-6611
Sole ProprietorYes
Enumeration DateMarch 10, 2009
Last NPPES UpdateOctober 21, 2024
NPPES CertifiedOctober 21, 2024
✔ NPI 1265673958 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in IL · 164.004823
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
Also ListedHealth EducatorTaxonomy 174H00000X
715 LAKE ST STE 220, Oak Park, IL 60301
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Eileen Hourihan Mccarthy Mfn, Rdn, Ldn, Cpt, is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Eileen Mccarthy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Illinois Dietitians LLC
Same address
Dietitian, Registered
715 LAKE ST STE 220
Oak Park, IL 60301
  • Reassigned Medicare billing, Illinois enrollment
NPI 1710241872 (708) 285-1347

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ILLINOIS DIETITIANS LLC
Dietitian, Registered
715 LAKE ST STE 220
OAK PARK, IL 60301
Cook County (708) 285-1347

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Eileen Mccarthy's NPI number?

The NPI number for Eileen Mccarthy is 1265673958. It was assigned to this individual provider in the NPPES registry on March 10, 2009.

Where is Eileen Mccarthy located?

Eileen Mccarthy practices at 715 Lake St Ste 220, Oak Park, IL 60301. The listed phone number is (708) 285-1347.

What is Eileen Mccarthy's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Eileen Mccarthy enrolled in Medicare?

Yes. Eileen Mccarthy is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Eileen Mccarthy's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Eileen Mccarthy reassigns Medicare benefits to Illinois Dietitians LLC (Oak Park, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Eileen Mccarthy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Eileen Mccarthy accept?

Health plans from Oscar Health list Eileen Mccarthy as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Eileen Mccarthy was last updated on October 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.