Charles C. Assell, O.D.
Optometrist · St Charles, IL
Charles C. Assell, O.D. is an optometrist with a practice address in St Charles, Illinois, and NPI 1962574137, issued on Nov 14, 2006. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Charles C. Assell
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- Practice location
- 3800 E Main St, St Charles, IL 60174
- Phone
- (630) 443-7200
- Enumerated
- Nov 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040929000142); 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 →
Also registered at 3800 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Khyati Amin, O.D.Optometrist1396894663
- Seher Shiekh, O.D.Optometrist1154676781
Verify Charles C. Assell 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
16% fewer Medicare Part D claims than the average optometrist in 2024
233 Medicare Part D claims for 53 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
- Latanoprost107 claims
- Brimonidine Tartrate20 claims
- Dorzolamide-Timolol13 claims
- Xiidra12 claims
- Timolol Maleate11 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: $618.55
22 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
- Drs. Aide And Assell Optometrists, P.C.Hoffman Estates, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles C. Assell among 2,697 optometrist records in Illinois
Charles C. Assell, 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
- Graduated2004 · median 2008 among the 1,513 with a school on file
- Record last updated2007 · 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 St Charles → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Khyati Amin, O.D.St Charles, IL 601741396894663
- Mikyung Baker, O.D.St Charles, IL 601741124133459
- Roy Bishop, ODSt Charles, IL 601741912002825
- Tyler Doersam, O.D.Saint Charles, IL 601741417365123
- Mark Kramer, O.DSaint Charles, IL 601741558393504
- Seher Shiekh, O.D.St Charles, IL 601741154676781
- Tamika Williams, ODSt Charles, IL 601741235376039
- Douglas Yuvan, O.D.Saint Charles, IL 601741043234263
Common questions
What is Charles C. Assell, O.D.'s NPI number?
Charles C. Assell, O.D.'s National Provider Identifier (NPI) is 1962574137, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles C. Assell, O.D. located?
The NPPES record lists a practice address at 3800 E Main St, St Charles, IL, 60174. Phone: (630) 443-7200. Providers update this record themselves, so call before visiting.
How can I verify Charles C. Assell, O.D.'s license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Charles C. Assell, O.D. prescribe under Medicare Part D?
In 2024, Charles C. Assell, O.D. had 233 Medicare Part D claims for 53 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.