Thu T. To, OD
Optometrist · Hinsdale, IL
Thu T. To, OD is an optometrist with a practice address in Hinsdale, Illinois, and NPI 1508942376, issued on Oct 27, 2006. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thu T. To
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- Practice location
- 18 W 1St St, Hinsdale, IL 60521
- Phone
- (630) 323-1100
- Enumerated
- Oct 27, 2006
- Record last updated
- Mar 7, 2023
- Medicare enrollment
- Enrolled (PECOS I20120926000818); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 2004
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,697 in Illinois → Look up another NPI →
Verify Thu T. To in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average optometrist in 2024
60 Medicare Part D claims for 33 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 67% of claims.
Most prescribed
- Prednisolone Acetate11 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: $61.40
3 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
- Avery Vision Center PCSaint Johns, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thu T. To among 2,697 optometrist records in Illinois
Thu T. To, 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
- Graduated2004 · median 2008 among the 1,513 with a school on file
- Record last updated2023 · 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).
Optometrist providers in Illinois
There are 2,697 optometrist records in Illinois.
All 2,697 in Illinois → Every provider in Hinsdale → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Treacy Adamo, O.D.Hinsdale, IL 605211043395254
- Stacy Angelopoulos, ODHinsdale, IL 605211932440427
- John Geevarghese, O.D.Hinsdale, IL 605211427141233
- Ryan Mannion, ODHinsdale, IL 605211184543449
- Carrie Roitstein, ODHinsdale, IL 605211134180060
- Robert Wilkemeyer, O.D.Hinsdale, IL 605211548386907
- Regino Flora, O.D.Oak Brook, IL 605231750454393
- Joseph Franceschini, O.D.Oak Brook, IL 605231578511507
Common questions
What is Thu T. To, OD's NPI number?
Thu T. To, OD's National Provider Identifier (NPI) is 1508942376, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thu T. To, OD located?
The NPPES record lists a practice address at 18 W 1St St, Hinsdale, IL, 60521. Phone: (630) 323-1100. Providers update this record themselves, so call before visiting.
How can I verify Thu T. To, OD's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Thu T. To, OD prescribe under Medicare Part D?
In 2024, Thu T. To, OD had 60 Medicare Part D claims for 33 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.