Joseph Aschenbrenner, O.D.
Optometrist · Barrington, IL
Joseph Aschenbrenner, O.D. is an optometrist with a practice address in Barrington, Illinois, and NPI 1841329786, issued on Mar 5, 2007. Check the license (Illinois 046.007840, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joseph Aschenbrenner
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 046.007840 IL
Self-reported in NPPES; status is on the state search - Practice location
- 330 E Main St, Barrington, IL 60010
- Phone
- (847) 381-5313
- Enumerated
- Mar 5, 2007
- Entity
- Type 1 · individual
Also registered at 330 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nancy Dolan, MA, LCPCMental Health Counselor1316277585
- James Garrett, LCPCMental Health Counselor1033395363
- Lisa Kowar, ODOptometrist1245371483
- Brenda Nelson, LCSWClinical Social Worker1356685325
- Anna Razes, LCSWClinical Social Worker1912043639
- Mary Ann Rosanova-Kaper, MDOphthalmology Physician1548255474
Verify Joseph Aschenbrenner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046.007840Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
79% fewer Medicare Part D claims than the average optometrist in 2024
58 Medicare Part D claims for 16 beneficiaries, against an average of 279 among the 32,314 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Latanoprost34 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: $32.83
2 payments, mostly food and beverage; the largest payer was Johnson & Johnson Vision Care, Inc.. The 33,561 providers of this specialty with any payment received $749.79 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.
Optometrist providers in Illinois
There are 2,629 optometrist records in Illinois.
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
- Jodi Acharya, O.D.Arlington Heights, IL1982769469
- Treacy Adamo, O.D.Hinsdale, IL1043395254
- Carla Adams, O.D.St Charles, IL1720199409
- Renee Adams, ODLawrenceville, IL1437220712
Common questions
What is Joseph Aschenbrenner, O.D.'s NPI number?
Joseph Aschenbrenner, O.D.'s National Provider Identifier (NPI) is 1841329786, issued on Mar 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Aschenbrenner, O.D. located?
The NPPES record lists a practice address at 330 E Main St, Barrington, IL, 60010. Phone: (847) 381-5313. Providers update this record themselves, so call before visiting.
How can I verify Joseph Aschenbrenner, O.D.'s license?
NPPES lists Illinois license number 046.007840, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Joseph Aschenbrenner, O.D. prescribe under Medicare Part D?
In 2024, Joseph Aschenbrenner, O.D. had 58 Medicare Part D claims for 16 beneficiaries; the average among optometrist prescribers was 279. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.