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ANDREA WILLIAMS RD LDN CDE
NPI 1477045763
Dietitian, Registered - Nutrition, Metabolic in Chicago, IL

Active since June 01, 2018Accepts Medicare Assignment
800 E 55TH ST, CHICAGO, IL 60615(773) 834-2580 Get Directions Write a Review

NPPES record last updated: June 1, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Andrea Williams Rd Ldn Cde NPPES

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

ANDREA WILLIAMS RD LDN CDE (NPI 1477045763) is an individual nutrition, metabolic provider in Chicago, Illinois, licensed in Illinois (164.002406) and active in the NPI registry since June 2018. She is a graduate of Other (1981).

NPPES Registry Identity

NPI1477045763
Entity TypeIndividualFemale
Primary Taxonomy133VN1006X
Provider Legal NameANDREA WILLIAMSCredential: RD LDN CDE
Location Address800 E 55TH STChicago, IL 60615-4906
Mailing Address708 Cornfield RdMatteson, IL 60443-1404 · (708) 720-5933
Phone(773) 834-2580
Sole ProprietorNo
Medical School CMSOtherGraduated 1981
Enumeration DateJune 1, 2018
✔ NPI 1477045763 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, Registered · Nutrition, MetabolicDietary & Nutritional Service Providers
Taxonomy Code133VN1006X
License✔ Licensed in IL · 164.002406
Definition
A registered dietitian who achieves specialized competency in metabolic nutrition.
800 E 55TH ST, Chicago, IL 60615
Open in Google Maps ↗

Other Identifiers 1

Other20020629Certified Diabetes Educator

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

Andrea Williams Rd Ldn Cde 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 ID42796948
PECOS Enrollment IDI20260110000037

Medicare Billing Reassignment

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

Ad Medical Supply, Inc.
16 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.

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.

APRIL ANNETTE HAMLET APN
Nurse Practitioner (Family)
800 E 55TH ST
CHICAGO, IL 60615
Cook County (773) 702-0660
MS. DEBRA LYNN CONTI FNP-BC
Nurse Practitioner (Family)
800 E 55TH ST
CHICAGO, IL 60615
Cook County (773) 702-0660
KATELYN EIDENBERGER
Pharmacist
800 E 55TH ST
CHICAGO, IL 60615
Cook County (888) 824-0200
MADELYN J BELL LCSW
Social Worker (Clinical)
800 E 55TH ST
CHICAGO, IL 60615
Cook County (773) 795-2260
DR. DEEPA ARLA D.O.
Internal Medicine
800 E 55TH ST
CHICAGO, IL 60615
Cook County (773) 702-0660
MS. CARLA ELENA RODRIGUEZ MSN, FNP-BC
Nurse Practitioner (Family)
800 E 55TH ST
CHICAGO, IL 60615
Cook County (773) 702-0660
RISKAT FADONOUGBO PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
800 E 55TH ST
CHICAGO, IL 60615
Cook County (773) 702-0660
ANITHA S VINOD M.D.
Pediatrics
800 E 55TH ST
CHICAGO, IL 60615
Cook County (773) 702-2193

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 Andrea Williams's NPI number?

The NPI number for Andrea Williams is 1477045763. It was assigned to this individual provider in the NPPES registry on June 1, 2018.

Where is Andrea Williams located?

Andrea Williams practices at 800 E 55th St, Chicago, IL 60615. The listed phone number is (773) 834-2580.

What is Andrea Williams's specialty?

The primary specialty registered for this NPI is Dietitian, Registered, specializing in Nutrition, Metabolic, with taxonomy code 133VN1006X.

Is Andrea Williams enrolled in Medicare?

Yes. Andrea Williams 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 Andrea Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrea Williams 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 Andrea Williams'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 Andrea Williams was last updated on June 1, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.