NPPES file of Aug 9, 2026

Leszek Zenon Paczkowski, O.D.

Optometrist · Willowbrook, IL

Leszek Zenon Paczkowski, O.D. is an optometrist with a practice address in Willowbrook, Illinois, and NPI 1942248562, issued on Jun 4, 2006. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942248562
Name
Leszek Zenon Paczkowski
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
Practice location
6300 Kingery Hwy Ste 116, Willowbrook, IL 60527
Phone
(630) 323-0222
Enumerated
Jun 4, 2006
Record last updated
Dec 5, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Leszek Zenon Paczkowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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94% fewer Medicare Part D claims than the average optometrist in 2024

18 Medicare Part D claims, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.

  1. Leszek Paczkowski18
  2. Specialty average277

Most prescribed

  1. Latanoprost11 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.

Leszek Zenon Paczkowski among 2,697 optometrist records in Illinois

Leszek Zenon Paczkowski, 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 fileNo · 56% of these records are
  • 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.

The 8 optometrist records with the nearest ZIP codes

  1. Louise Sclafani, ODBurr Ridge, IL 605271992861140
  2. Glenn Londos, O.D.La Grange Park, IL 605261295791622
  3. John Anderson, O.D.La Grange, IL 605251164550596
  4. Elizabeth Casper, ODLa Grange, IL 605251467127688
  5. Anna Czerwinski, ODLa Grange, IL 605251639061666
  6. Jennifer GeertzHodgkins, IL 605251467460105
  7. Jennifer Gula, O.D.La Grange, IL 605251912161480
  8. Cecilia Heiges, O.D.La Grange, IL 605251518067693

Common questions

What is Leszek Zenon Paczkowski, O.D.'s NPI number?

Leszek Zenon Paczkowski, O.D.'s National Provider Identifier (NPI) is 1942248562, issued on Jun 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Leszek Zenon Paczkowski, O.D. located?

The NPPES record lists a practice address at 6300 Kingery Hwy Ste 116, Willowbrook, IL, 60527. Phone: (630) 323-0222. Providers update this record themselves, so call before visiting.

How can I verify Leszek Zenon Paczkowski, O.D.'s license?

Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Leszek Zenon Paczkowski, O.D. prescribe under Medicare Part D?

In 2024, Leszek Zenon Paczkowski, O.D. had 18 Medicare Part D claims; 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.