William C. Hillmann, OD
Optometrist · Rockford, IL
William C. Hillmann, OD is an optometrist with a practice address in Rockford, Illinois, and NPI 1629039789, issued on Mar 29, 2006. Check the license (Illinois 046-009168, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William C. Hillmann
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- 046-009168 IL
046009168 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1603 N Alpine RD, Rockford, IL 61107
- Phone
- (815) 209-9420
- Enumerated
- Mar 29, 2006
- Record last updated
- Aug 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (815) 425-5244
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,697 in Illinois → Look up another NPI →
Also registered at 1603 N Alpine RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Young Hee LeeOptometrist1851846422
- Charvi Patel, ODOptometrist1033994298
Verify William C. Hillmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046-009168Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $19.89
1 payment: 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.
William C. Hillmann among 2,697 optometrist records in Illinois
William C. Hillmann, 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 fileNo · 56% of these records are
- Record last updated2021 · 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).
54 optometrist records list a practice address in Rockford
They are 54 of the 3,893 NPPES records with a practice address in Rockford, and 2,697 optometrist records in Illinois.
All 2,697 in Illinois → Every provider in Rockford → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Constance Copeland, OD, PHDRockford, IL 611071508857202
- Paul Hahn, ODRockford, IL 611071649260449
- Jaime King, O.D.Rockford, IL 611071225131428
- Young Hee LeeRockford, IL 611071851846422
- Diana Li, ODRockford, IL 611071164900700
- David Nielsen, O.D.Rockford, IL 611071285659367
- Anna Pamula, ODRockford, IL 611071023728995
- Brian Parrett, O.D.Rockford, IL 611071922248996
Common questions
What is William C. Hillmann, OD's NPI number?
William C. Hillmann, OD's National Provider Identifier (NPI) is 1629039789, issued on Mar 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William C. Hillmann, OD located?
The NPPES record lists a practice address at 1603 N Alpine RD, Rockford, IL, 61107. Phone: (815) 209-9420. Providers update this record themselves, so call before visiting.
How can I verify William C. Hillmann, OD's license?
NPPES lists Illinois license number 046-009168, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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.