MADELYN CARNAHAN MS, RDN, LD
NPI 1124873542
Dietitian, Registered in Defiance, OH

Q: What is Madelyn Carnahan's NPI number?

The NPI number for Madelyn Carnahan is 1124873542. It was assigned to this individual provider in the NPPES registry on April 19, 2024.

Q: What is Madelyn Carnahan'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 Madelyn Carnahan was last updated on June 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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 April 19, 2024Accepts Medicare Assignment

724 INVERNESS DR, DEFIANCE, OH 43512(419) 980-9813 Get Directions Write a Review

NPPES record last updated: June 10, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Madelyn Carnahan Ms, Rdn, Ld NPPES

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

MADELYN CARNAHAN MS, RDN, LD (NPI 1124873542) is an individual dietitian, registered in Defiance, Ohio, licensed in Ohio (LD.10548) and active in the NPI registry since April 2024. She maintains a secondary practice location in Yellow Springs and is a graduate of Other (2022).

NPPES Registry Identity

NPI1124873542

Entity TypeIndividualFemale

Primary Taxonomy133V00000X

Provider Legal NameMADELYN CARNAHANCredential: MS, RDN, LD

Location Address724 INVERNESS DRDefiance, OH 43512-8549

Mailing Address724 Inverness DrDefiance, OH 43512-8549 · (419) 980-9813

Phone(419) 980-9813

Sole ProprietorYes

Medical School CMSOtherGraduated 2022

Enumeration DateApril 19, 2024

Last NPPES UpdateJune 10, 2026

NPPES CertifiedJune 10, 2026

✔ NPI 1124873542 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers

Taxonomy Code133V00000X

Licenses✔ Licensed in OH · LD.10548✔ Licensed in IN · 37003994A

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.

724 INVERNESS DR, Defiance, OH 43512

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Secondary Practice Location 1

Location 14359 E Enon RdYellow Springs, OH 45387-9708 · Phone (937) 206-1131

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource, MedMutual.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Madelyn Carnahan Ms, Rdn, Ld is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7911348941

PECOS Enrollment IDI20240508002574

Medicare Billing Reassignment

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

Healthy Hearts Nutrition LLC

105 mi

Health Service

4359 E ENON RD
Yellow Springs, OH 45387

Reassigned Medicare billing, Ohio enrollment
16 clinicians in this Medicare group

NPI 1609128784 (937) 206-1131

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43512 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$0.00 typical visit price

range $54.34 – $166.65

Typical copayment $0.00 (range $13.58 – $41.66)

Most-billed visit code NA

Established Patient

$96.44 typical visit price

range $17.10 – $135.40

Typical copayment $24.11 (range $4.27 – $33.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Madelyn Carnahan's NPI number?

The NPI number for Madelyn Carnahan is 1124873542. It was assigned to this individual provider in the NPPES registry on April 19, 2024.

Where is Madelyn Carnahan located?

Madelyn Carnahan practices at 724 Inverness Dr, Defiance, OH 43512. The listed phone number is (419) 980-9813.

What is Madelyn Carnahan's specialty?

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

Is Madelyn Carnahan enrolled in Medicare?

Yes. Madelyn Carnahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Madelyn Carnahan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Madelyn Carnahan reassigns Medicare benefits to Healthy Hearts Nutrition LLC (Yellow Springs, OH). 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 Madelyn Carnahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Madelyn Carnahan accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource and MedMutual list Madelyn Carnahan 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 Madelyn Carnahan was last updated on June 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.