Ruth D. Williams, MD
NPI 1699764597ActiveIndividual· Ophthalmology, Glaucoma Specialist· Wheaton, IL
Ophthalmology, Glaucoma Specialist (MD) in Wheaton, Illinois, trained at Rush Medical College of Rush University (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $633,191 for 6,819 claims, against $251,741 paid for services in 2024. Glaukos Corporation was the largest of 3 companies reporting payments in 2025, $305.48 in all, mostly food and beverage.
Overview
| NPI | 1699764597 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 14, 2005 |
| Last updated in NPPES | Aug 27, 2024 |
| Certified by provider | Aug 27, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Glaucoma Specialist Primary | 207WX0009X | 036-075904 | IL |
| Ophthalmology | 207W00000X | 036-075904 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 996 |
|---|---|
| Services billed | 4,974 across 20 procedure codes |
| Paid by Medicare | $251,741 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,819 · 13,094 30-day fills |
|---|---|
| Patients | 1,046 |
| Total drug cost | $633,191 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Ophthalmology |
Medical group
- Wheaton Eye Clinic LtdWheaton, IL · 44 clinicians
Industry payments (Open Payments)
- 2025$305.48 · 6 payments from 3 companies
- 2024$725.47 · 15 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaukos Corporation | $202.66 | 1 |
| Bausch & Lomb Americas Inc. | $78.23 | 4 |
| Thea Pharma Inc. | $24.59 | 1 |
What the 2025 payments were for
- Food and Beverage$305.48 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology, Glaucoma Specialist providers in Wheaton
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All Ophthalmology, Glaucoma Specialist providers in Illinois →