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MRS. MARY ANN SHANNON RD. LD.
NPI 1245619493
Dietitian, Registered in Darien, IL

Active since May 20, 2015
1801 HOLLY AVE, DARIEN, IL 60561(630) 347-0526 Get Directions Write a Review

NPPES record last updated: May 20, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mrs. Mary Ann Shannon Rd. Ld. NPPES

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

MRS. MARY ANN SHANNON RD. LD. (NPI 1245619493) is an individual dietitian, registered in Darien, Illinois, licensed in Illinois (443568) and active in the NPI registry since May 2015.

NPPES Registry Identity

NPI1245619493
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameMRS. MARY ANN SHANNONCredential: RD. LD.
Location Address1801 HOLLY AVEDarien, IL 60561-3516
Mailing Address1801 Holly AveDarien, IL 60561-3516 · (630) 347-0526
Phone(630) 347-0526
Sole ProprietorYes
Enumeration DateMay 20, 2015
✔ NPI 1245619493 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 · 443568
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.
1801 HOLLY AVE, Darien, IL 60561
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Mary Ann Shannon Rd. Ld. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Mary Ann Shannon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ad Medical Supply, Inc.
20 mi
Durable Medical Equipment & Medical Supplies
6160 N CICERO AVE STE 503
Chicago, IL 60646
  • Reassigned Medicare billing, Illinois enrollment
  • 14 clinicians in this Medicare group
NPI 1629015904 (773) 292-1940

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Therapy procedure reassessment for nutrition management, each 15 minutes 97803
This is a process where a healthcare professional reviews your nutritional needs every 15 minutes. It's part of managing your diet to ensure optimal health. The review may involve adjusting your meal plans, evaluating your body's response to certain foods, and monitoring your overall nutrition status.
2,298 services335 patients
Therapy procedure for nutrition management, each 15 minutes 97802
This is a 15-minute session focused on managing your nutrition. A professional will assess your dietary habits and provide personalized advice to improve your health. It can help manage weight, control chronic diseases, and promote overall wellbeing.
524 services88 patients

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 Mary Ann Shannon's NPI number?

The NPI number for Mary Ann Shannon is 1245619493. It was assigned to this individual provider in the NPPES registry on May 20, 2015.

Where is Mary Ann Shannon located?

Mary Ann Shannon practices at 1801 Holly Ave, Darien, IL 60561. The listed phone number is (630) 347-0526.

What is Mary Ann Shannon's specialty?

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

Is Mary Ann Shannon enrolled in Medicare?

Yes. Mary Ann Shannon is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Ann Shannon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ann Shannon reassigns Medicare benefits to Ad Medical Supply, Inc. (Chicago, 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 Mary Ann Shannon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Ann Shannon was last updated on May 20, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.