Justin Groennert, O.D.
Optometrist · Lebanon, IL
Justin Groennert, O.D. is an optometrist with a practice address in Lebanon, Illinois, and NPI 1083230585, issued on Jun 19, 2020. Check the license (Illinois 046.011438, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Justin Groennert
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 046.011438 IL
Self-reported in NPPES; status is on the state search - Practice location
- 201 W Saint Louis St, Lebanon, IL 62254
- Phone
- (618) 537-6356
- Enumerated
- Jun 19, 2020
- Record last updated
- Jun 19, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200716003901); accepts Medicare assignment
- Medical or professional school
- University Of Missouri St Louis - School Of Optometry, 2020
- Entity
- Type 1 · individual
Also registered at 201 W Saint Louis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claire Klinsky, O.D.Optometrist1508121344
- Charissa Thorpe, O.D.Optometrist1740225994
Verify Justin Groennert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046.011438Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average optometrist in 2024
152 Medicare Part D claims for 51 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Latanoprost65 claims
- Prednisolone Acetate18 claims
- Timolol Maleate12 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: $221.86
10 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. 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
- Lebanon Optometric Center LLCLebanon, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
4 optometrist records list a practice address in Lebanon
They are 4 of the 43 NPPES records with a practice address in Lebanon, and 2,697 optometrist records in Illinois.
All 4 in Lebanon → All 2,697 in Illinois → Every provider in Lebanon →
Other optometrist records in Illinois
- Marvin Aal, O.D.Chicago, IL1184634180
- Russul Abbas, ODGurnee, IL1285129007
- Sarah Abbott, ODPark Ridge, IL1881333565
- Mahmud Abdallah, ODAlsip, IL1417501248
- Nada AbdallahDeerfield, IL1669206066
- Saul Abraham, O.D.Mt Prospect, IL1285772400
- Aarlan Aceto, ODDowners Grove, IL1013064385
- Jodi Acharya, O.D.Arlington Heights, IL1982769469
- Treacy Adamo, O.D.Hinsdale, IL1043395254
- Carla Adams, O.D.St Charles, IL1720199409
Common questions
What is Justin Groennert, O.D.'s NPI number?
Justin Groennert, O.D.'s National Provider Identifier (NPI) is 1083230585, issued on Jun 19, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Justin Groennert, O.D. located?
The NPPES record lists a practice address at 201 W Saint Louis St, Lebanon, IL, 62254. Phone: (618) 537-6356. Providers update this record themselves, so call before visiting.
How can I verify Justin Groennert, O.D.'s license?
NPPES lists Illinois license number 046.011438, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Justin Groennert, O.D. prescribe under Medicare Part D?
In 2024, Justin Groennert, O.D. had 152 Medicare Part D claims for 51 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.