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DR. RHONDA KAY WILLIAMS M.D.
NPI 1801879465
Pediatrics in St Charles, IL

Active since November 28, 2005PECOS Enrolled
2900 FOXFIELD RD, #203, ST CHARLES, IL 60174(630) 797-4255(630) 797-4259 Get Directions Write a Review

NPPES record last updated: April 15, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Rhonda Kay Williams M.d. NPPES

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

DR. RHONDA KAY WILLIAMS M.D. (NPI 1801879465) is an individual pediatrics provider in St Charles, Illinois, licensed in Illinois (036074825) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801879465
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. RHONDA KAY WILLIAMSCredential: M.D.
Location Address2900 FOXFIELD RD, #203St Charles, IL 60174-5799
Mailing Address2900 Foxfield Rd, #203St Charles, IL 60174-5799 · (630) 797-4255 · Fax (630) 797-4259
Phone(630) 797-4255
Fax(630) 797-4259
Sole ProprietorNo
Enumeration DateNovember 28, 2005
Last NPPES UpdateApril 15, 2013
✔ NPI 1801879465 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IL · 036074825
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
2900 FOXFIELD RD, St Charles, IL 60174
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Other Identifiers 6

Medicaid036074825IL
Other363149833IL · Cdpg Tin
Other920540005IL · Medicare Ptan (individual)
Other0222075IL · Cdpg Bcbs
Other1033149844IL · Cdpg Npi
Other920540IL · Medicare Ptan (group)

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Rhonda Kay Williams M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

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

Central Dupage Physician Group
11 mi
Family Medicine
5777 DEPARTMENT
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 1,664 clinicians in this Medicare group
NPI 1033149844 (630) 933-3300

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 60174 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
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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.

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.

DAVID W FLATT D.C.
Chiropractor (Orthopedic)
2900 FOXFIELD RD
ST CHARLES, IL 60174
Kane County (630) 208-3200
MICHELLE S. KRAMER ATC
Specialist/Technologist (Athletic Trainer)
2900 FOXFIELD RD
ST CHARLES, IL 60174
Kane County (630) 587-5788
MRS. PAMELA MARIE DENHOF ATC
Specialist
2900 FOXFIELD RD, LLA
ST CHARLES, IL 60174
Kane County (630) 587-5788
LAURA KOEPPEL TAGLE MD
Internal Medicine
2900 FOXFIELD RD
ST CHARLES, IL 60174
Kane County (630) 208-3200
DUKANE ALLERGY ASSOCIATES. LTD
Preferred Provider Organization
2900 FOXFIELD RD, SUITE 206
ST CHARLES, IL 60174
Kane County (630) 584-6127
SCOTT DUNCAN MCNAUGHTON M.D.
Internal Medicine
2900 FOXFIELD RD
ST CHARLES, IL 60174
Kane County (630) 208-3200
MARIO BLANQUEL
Specialist/Technologist (Athletic Trainer)
2900 FOXFIELD RD
ST CHARLES, IL 60174
Kane County (630) 208-3200
DR. ROBERT J CALABRIA D.O.
Family Medicine
2900 FOXFIELD RD
ST CHARLES, IL 60174
Kane County (630) 513-8275

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 Rhonda Williams's NPI number?

The NPI number for Rhonda Williams is 1801879465. It was assigned to this individual provider in the NPPES registry on November 28, 2005.

Where is Rhonda Williams located?

Rhonda Williams practices at 2900 Foxfield Rd #203, St Charles, IL 60174. The listed phone number is (630) 797-4255.

What is Rhonda Williams's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Rhonda Williams enrolled in Medicare?

Yes. Rhonda Williams is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Rhonda Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rhonda Williams reassigns Medicare benefits to Central Dupage Physician Group (Carol Stream, 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 Rhonda 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 Rhonda Williams was last updated on April 15, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.