Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Rhonda Kay Williams, M.D.

Pediatrics Physician in St Charles, IL · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1801879465

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Registry record

Entity type Individual (Type 1)

Name Dr. Rhonda Kay Williams

Credential M.D.

Sex Female

Practice address 2900 Foxfield Rd, #203, St Charles, IL, 60174

Phone (630) 797-4255

Fax (630) 797-4259

Enumeration date Nov 28, 2005

Last updated in NPPES Apr 15, 2013

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036074825 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
920540	Other	IL	MEDICARE PTAN (GROUP)
0222075	Other	IL	CDPG BCBS
1033149844	Other	IL	CDPG NPI
036074825	Medicaid	IL	-
920540005	Other	IL	MEDICARE PTAN (INDIVIDUAL)

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Rhonda Williams practice?

The practice location on file with NPPES is in St Charles, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Rhonda Williams?

The National Provider Identifier (NPI) for Rhonda Williams is 1801879465, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-15.