Thomas L. Mahaffey, OD
Optometrist · Bloomington, IL
Thomas L. Mahaffey, OD is an optometrist with a practice address in Bloomington, Illinois, and NPI 1669401139, issued on Jun 30, 2006. Check the license (Illinois 046008812, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thomas L. Mahaffey
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 046008812 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1107 Airport RD, Bloomington, IL 61704
- Phone
- (309) 662-3937
- Enumerated
- Jun 30, 2006
- Record last updated
- Jan 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 046008812 IL
- Medicare enrollment
- Enrolled (PECOS I20090506000373); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 1995
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,697 in Illinois → Look up another NPI →
Also registered at 1107 Airport RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nenita Maganti, MDOphthalmology Physician1841664679
- Chintan Pathak, MDOphthalmology Physician1861866725
Verify Thomas L. Mahaffey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046008812Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average optometrist in 2024
234 Medicare Part D claims for 119 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Neomycin-Polymyxin-Dexameth76 claims
- Latanoprost68 claims
- Amoxicillin15 claims
- Prednisolone Acetate12 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 practice group's MIPS final score for 2023 (Medicare payment program): 89.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $442.26
21 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
- Visionpoint Eye Center LLCBloomington, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas L. Mahaffey among 2,697 optometrist records in Illinois
Thomas L. Mahaffey, OD 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 updated2020 · 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).
17 optometrist records list a practice address in Bloomington
They are 17 of the 1,903 NPPES records with a practice address in Bloomington, and 2,697 optometrist records in Illinois.
All 2,697 in Illinois → Every provider in Bloomington → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Andrew Backus, O.D.Bloomington, IL 617041336131259
- Eric Birky, ODBloomington, IL 617041013483783
- Ashley Foster, ODBloomington, IL 617041396399374
- Kellie Gladys, ODBloomington, IL 617041194454173
- Megan Mosley, ODBloomington, IL 617041073848511
- Drew Klein, O.D.Bloomington, IL 617051710039003
- Dennis Brtva, O.D.Bloomington, IL 617011215909056
- John Couillard, O.D.Bloomington, IL 617011053404780
Common questions
What is Thomas L. Mahaffey, OD's NPI number?
Thomas L. Mahaffey, OD's National Provider Identifier (NPI) is 1669401139, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas L. Mahaffey, OD located?
The NPPES record lists a practice address at 1107 Airport RD, Bloomington, IL, 61704. Phone: (309) 662-3937. Providers update this record themselves, so call before visiting.
How can I verify Thomas L. Mahaffey, OD's license?
NPPES lists Illinois license number 046008812, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Thomas L. Mahaffey, OD prescribe under Medicare Part D?
In 2024, Thomas L. Mahaffey, OD had 234 Medicare Part D claims for 119 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Thomas L. Mahaffey, OD's MIPS final score?
The 2023 MIPS final score is 89.5 of 100, reported for the practice group. 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.