Michael William Thomas, O.D.
Optometrist · Marengo, IL
Michael William Thomas, O.D. is an optometrist with a practice address in Marengo, Illinois, and NPI 1679539993, issued on Apr 25, 2006. Check the license (Illinois 046-009334, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael William Thomas
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 046-009334 IL
Self-reported in NPPES; status is on the state search - Practice location
- 205 N State St, Marengo, IL 60152
- Phone
- (815) 568-6508
- Enumerated
- Apr 25, 2006
- Record last updated
- Aug 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (815) 568-4896
- Medicaid ID
- 046009334 IL
- Medicare enrollment
- Enrolled (PECOS I20050309000843); accepts Medicare assignment
- Medical or professional school
- Indiana University - School Of Optometry, 1995
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,697 in Illinois → Look up another NPI →
Also registered at 205 N State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Javier Rodriguez, ODOptometrist1275056236
- Jon Russell, O.D.Optometrist1831177088
Verify Michael William Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046-009334Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average optometrist in 2024
94 Medicare Part D claims for 27 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Latanoprost33 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.
Industry payments in 2024: $17.59
1 payment: food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 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
- Marengo Vision Center, P.C.Marengo, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael William Thomas among 2,697 optometrist records in Illinois
Michael William Thomas, O.D. is one of 2,697 optometrist records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 63% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1995 · median 2008 among the 1,513 with a school on file
- Record last updated2010 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 optometrist records list a practice address in Marengo
They are 4 of the 61 NPPES records with a practice address in Marengo, and 2,697 optometrist records in Illinois.
All 2,697 in Illinois → Every provider in Marengo → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Paul Marnul, O.D.Marengo, IL 601521447220470
- Javier Rodriguez, ODMarengo, IL 601521275056236
- Jon Russell, O.D.Marengo, IL 601521831177088
- Eileen Gable, ODMaywood, IL 601531124012562
- Megan Hunter, O.D.Maywood, IL 601531316904212
- Peter Russo, ODMaywood, IL 601531790759694
- John Lehr, O.D.Westchester, IL 601541417255837
- Andriani Siavelis, O.D.Westchester, IL 601541588637300
Common questions
What is Michael William Thomas, O.D.'s NPI number?
Michael William Thomas, O.D.'s National Provider Identifier (NPI) is 1679539993, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael William Thomas, O.D. located?
The NPPES record lists a practice address at 205 N State St, Marengo, IL, 60152. Phone: (815) 568-6508. Providers update this record themselves, so call before visiting.
How can I verify Michael William Thomas, O.D.'s license?
NPPES lists Illinois license number 046-009334, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Michael William Thomas, O.D. prescribe under Medicare Part D?
In 2024, Michael William Thomas, O.D. had 94 Medicare Part D claims for 27 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
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.