Thomas K. Unger, O.D.
Optometrist · Troy, IL
Thomas K. Unger, O.D. is an optometrist with a practice address in Troy, Illinois, and NPI 1629158092, issued on Oct 17, 2006. Check the license (Illinois 046.008303, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thomas K. Unger
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 046.008303 IL
Self-reported in NPPES; status is on the state search - Practice location
- 534 Edwardsville RD, Troy, IL 62294
- Phone
- (618) 667-2020
- Enumerated
- Oct 17, 2006
- Record last updated
- Nov 17, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (618) 667-0205
- Medicaid ID
- 046008303 IL
- Medicare enrollment
- Enrolled (PECOS I20080612000836); accepts Medicare assignment
- Medical or professional school
- University Of Missouri St Louis - School Of Optometry, 1988
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,697 in Illinois → Look up another NPI →
Also registered at 534 Edwardsville RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alice Unger, O.D.Optometrist1265513162
Verify Thomas K. Unger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046.008303Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average optometrist in 2024
195 Medicare Part D claims for 56 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Latanoprost106 claims
- Brimonidine Tartrate19 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): 100 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: $357.54
8 payments; by number, the most common kind was 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
- Unger Eye Care PCTroy, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas K. Unger among 2,697 optometrist records in Illinois
Thomas K. Unger, 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
- Graduated1988 · median 2008 among the 1,513 with a school on file
- Record last updated2009 · 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).
2 optometrist records list a practice address in Troy
They are 2 of the 157 NPPES records with a practice address in Troy, and 2,697 optometrist records in Illinois.
All 2,697 in Illinois → Every provider in Troy → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Alice Unger, O.D.Troy, IL 622941265513162
- Jeff Cytron, O.D.Waterloo, IL 622981205843968
- Robert Toal, ODWaterloo, IL 622981114990116
- Kevin Becker, ODQuincy, IL 623011700859360
- Mark Brei, O.D.Quincy, IL 623011790857662
- Kristie Chevalier, O.D.Quincy, IL 623011710936885
- Raymond Gianfriddo, O.D.Quincy, IL 623011760425631
- Daniel Hayden, O.D.Quincy, IL 623011821047994
Common questions
What is Thomas K. Unger, O.D.'s NPI number?
Thomas K. Unger, O.D.'s National Provider Identifier (NPI) is 1629158092, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas K. Unger, O.D. located?
The NPPES record lists a practice address at 534 Edwardsville RD, Troy, IL, 62294. Phone: (618) 667-2020. Providers update this record themselves, so call before visiting.
How can I verify Thomas K. Unger, O.D.'s license?
NPPES lists Illinois license number 046.008303, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Thomas K. Unger, O.D. prescribe under Medicare Part D?
In 2024, Thomas K. Unger, O.D. had 195 Medicare Part D claims for 56 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Thomas K. Unger, O.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.