Dr. Ruth D Williams, MD
Dr. Ruth D Williams is a Glaucoma Specialist (Ophthalmology) Physician provider (Ophthalmology) practicing in Wheaton, IL, registered in the NPPES registry with NPI 1699764597 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1699764597 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Ruth D Williams |
| Credential | MD |
| Sex | Female |
| Practice address | 2015 N MAIN ST, Wheaton, IL, 60187 |
| Phone | 6306688250 |
| Fax | 6306688916 |
| Enumeration date | 2005-10-14 |
| Last updated in NPPES | 2024-08-27 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207W00000X | Ophthalmology Physician | Secondary | 036-075904 | IL |
| 207WX0009X | Glaucoma Specialist (Ophthalmology) Physician | Primary | 036-075904 | IL |
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 |
|---|---|---|---|
| 180014630 | Other | IL | RR MEDICARE |
| 036075904 | Medicaid | IL | — |
Copy-ready billing details
Provider: Ruth Williams, MD NPI: 1699764597 Taxonomy: 207WX0009X (Glaucoma Specialist (Ophthalmology) Physician) Address: 2015 N MAIN ST, Wheaton, IL, 60187
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1801883004 | Wheaton Eye Clinic Ltd | Organization | Ophthalmology Physician | Wheaton, IL |
| 1215924485 | Richard Gieser | Individual | Ophthalmology Physician | Wheaton, IL |
| 1013904986 | Susan Anderson-Nelson | Individual | Retina Specialist (Ophthalmology) Physician | Wheaton, IL |
| 1992793822 | David Gieser | Individual | Ophthalmology Physician | Wheaton, IL |
| 1235127168 | Jon Gieser | Individual | Retina Specialist (Ophthalmology) Physician | Wheaton, IL |
| 1851389787 | Stephen Gieser | Individual | Ophthalmology Physician | Wheaton, IL |
| 1295723120 | Mark Daily | Individual | Ophthalmology Physician | Wheaton, IL |
| 1255320180 | Jeffrey Haag | Individual | Ophthalmology Physician | Wheaton, IL |
Verify this record
Cross-check NPI 1699764597 against the authoritative CMS record: view Dr. Ruth D Williams on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-08-27.