MS. MARCIA ANN WIRTH DIETICIAN
NPI 1386703643
Dietitian, Registered in Geneseo, IL

Q: What is Marcia Wirth's NPI number?

The NPI number for Marcia Wirth is 1386703643. It was assigned to this individual provider in the NPPES registry on December 6, 2006. The provider is also known as Ms. Marcia Ann Demay Dietician.

Q: What is Marcia Wirth's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Marcia Wirth was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.

Active since December 06, 2006

600 N COLLEGE AVE, GENESEO, IL 61254(309) 944-6431 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Ms. Marcia Ann Wirth Dietician NPPES

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

MS. MARCIA ANN WIRTH DIETICIAN (NPI 1386703643) is an individual dietitian, registered in Geneseo, Illinois, licensed in Illinois (716443) and active in the NPI registry since December 2006.

NPPES Registry Identity

NPI1386703643

Entity TypeIndividualFemale

Primary Taxonomy133V00000X

Provider Legal NameMS. MARCIA ANN WIRTHCredential: DIETICIAN

Location Address600 N COLLEGE AVEGeneseo, IL 61254-1091

Mailing Address600 N College AveGeneseo, IL 61254-1091 · (309) 944-6431

Phone(309) 944-6431

Sole ProprietorNo

Enumeration DateDecember 6, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1386703643 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers

Taxonomy Code133V00000X

License✔ Licensed in IL · 716443

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.

600 N COLLEGE AVE, Geneseo, IL 61254

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Other Names 1

Former Name (1)Ms. Marcia Ann Demay Dietician

Other Identifiers 1

Medicare ID-Type UnspecifiedL97967

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.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. Marcia Ann Wirth Dietician is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

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

Hammond Henry Dist Hospital

0.1 mi

Critical Access

600 N COLLEGE AVE
Geneseo, IL 61254

Reassigned Medicare billing, Illinois enrollment
2 clinicians in this Medicare group

NPI 1457344491 (309) 944-6431

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 20

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

MS. KATHY ANN PEED

Dietitian, Registered

600 N COLLEGE AVE
GENESEO, IL 61254

Henry County (309) 944-9103

DR. MATTHEW RYAN HEBERER M.D.

Surgery

600 N COLLEGE AVE
GENESEO, IL 61254

Henry County (309) 944-1595

DONALD R FORD MD

Family Medicine

600 N COLLEGE AVE, SUITE 120
GENESEO, IL 61254

Henry County (309) 944-5342

IOWA ILLINOIS PAIN CONSULTANTS PC

Clinic/Center (Pain)

600 N COLLEGE AVE
GENESEO, IL 61254

Henry County (309) 944-6431

HAMMOND HENRY DIST HOSPITAL

Clinic/Center (Rural Health)

600 N COLLEGE AVE
GENESEO, IL 61254

Henry County (309) 944-1275

HAMMMOND HENRY RETAIL PHARMACY

General Acute Care Hospital

600 N COLLEGE AVE
GENESEO, IL 61254

Henry County (309) 944-8326

ALISSA HAASE

Occupational Therapist

600 N COLLEGE AVE
GENESEO, IL 61254

Henry County (309) 944-6431

STACI LYNNE CIRCELLO APRN

Nurse Practitioner (Family)

600 N COLLEGE AVE
GENESEO, IL 61254

Henry County (309) 944-9160

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 Marcia Wirth's NPI number?

The NPI number for Marcia Wirth is 1386703643. It was assigned to this individual provider in the NPPES registry on December 6, 2006. The provider is also known as Ms. Marcia Ann Demay Dietician.

Where is Marcia Wirth located?

Marcia Wirth practices at 600 N College Ave, Geneseo, IL 61254. The listed phone number is (309) 944-6431.

What is Marcia Wirth's specialty?

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

Is Marcia Wirth enrolled in Medicare?

Yes. Marcia Wirth is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Marcia Wirth's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marcia Wirth reassigns Medicare benefits to Hammond Henry Dist Hospital (Geneseo, 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 Marcia Wirth's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marcia Wirth accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Marcia Wirth 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 Marcia Wirth was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.