Ruth D. Williams, MD
Glaucoma Specialist (Ophthalmology) Physician · Wheaton, IL
Ruth D. Williams, MD is a glaucoma specialist (ophthalmology) physician with a practice address in Wheaton, Illinois, and NPI 1699764597, issued on Oct 14, 2005. Check the license (Illinois 036-075904, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ruth D. Williams
- Credential
- MD
- Primary taxonomy
- Glaucoma Specialist (Ophthalmology) Physician 207WX0009X
- License number
- 036-075904 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2015 N Main St, Wheaton, IL 60187
- Phone
- (630) 668-8250
- Enumerated
- Oct 14, 2005
- Record last updated
- Aug 27, 2024
- Fax
- (630) 668-8916
- Medicaid ID
- 036075904 IL
- Medicare enrollment
- Enrolled (PECOS I20100422000974); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 1986
- Entity
- Type 1 · individual
8 nearest glaucoma specialist (ophthalmology) physician records → All 13 in Illinois → Look up another NPI →
Also registered at 2015 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Anderson-Nelson, M.D.Retina Specialist (Ophthalmology) Physician1013904986
- Christina Andrzejewski, ODOptometrist1235922089
- Ayesha Badar, MDGlaucoma Specialist (Ophthalmology) Physician1619462330
- Saaquib Bakhsh, MDRetina Specialist (Ophthalmology) Physician1457871402
- Kimberly Blankshain, MDNeuro-ophthalmology Physician1801328125
- Eric CaskeyNeuro-ophthalmology Physician1558892729
Verify Ruth D. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-075904Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average glaucoma specialist (ophthalmology) physician in 2024
6,819 Medicare Part D claims for 1,046 beneficiaries, against an average of 3,060 among the 430 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Latanoprost3,280 claims
- Dorzolamide-Timolol1,162 claims
- Lumigan281 claims
- Brimonidine Tartrate242 claims
- Timolol Maleate225 claims
- Dorzolamide Hcl212 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $725.47
15 payments; by number, the most common kind was food and beverage; the largest payer was New World Medical,inc. The 391 providers of this specialty with any payment received $5,284.60 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Wheaton Eye Clinic LtdWheaton, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruth D. Williams among 13 glaucoma specialist (ophthalmology) physician records in Illinois
Ruth D. Williams, MD is one of 13 glaucoma specialist (ophthalmology) physician records with a practice address in Illinois. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 92% of these records are
- Graduated1986 · median 2015 among the 12 with a school on file
- Record last updated2024 · 31% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0009X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Glaucoma Specialist (Ophthalmology) Physician providers in Illinois
There are 13 glaucoma specialist (ophthalmology) physician records in Illinois.
All 13 in Illinois → Every provider in Wheaton → Glaucoma Specialist (Ophthalmology) Physician nationwide →
The 8 glaucoma specialist (ophthalmology) physician records with the nearest ZIP codes
- Ayesha Badar, MDWheaton, IL 601871619462330
- Frini Makadia, M.D.Wheaton, IL 601871083069702
- Zhuangjun Si, MDWheaton, IL 601871932605672
- Edward Sung, MDWheaton, IL 601871710976618
- Jeremy Wingard, MDWheaton, IL 601871124218789
- Nandita Anand, MDGlenview, IL 600261942697693
- Kara Schultz, MDArlington Heights, IL 600051629276118
- Preet Sohal, MDHomewood, IL 604301386226710
Common questions
What is Ruth D. Williams, MD's NPI number?
Ruth D. Williams, MD's National Provider Identifier (NPI) is 1699764597, issued on Oct 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ruth D. Williams, MD located?
The NPPES record lists a practice address at 2015 N Main St, Wheaton, IL, 60187. Phone: (630) 668-8250. Providers update this record themselves, so call before visiting.
How can I verify Ruth D. Williams, MD's license?
NPPES lists Illinois license number 036-075904, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ruth D. Williams, MD prescribe under Medicare Part D?
In 2024, Ruth D. Williams, MD had 6,819 Medicare Part D claims for 1,046 beneficiaries; the average among glaucoma specialist (ophthalmology) physician prescribers was 3,060. Part D covers Medicare prescriptions only.
What is Ruth D. Williams, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.