NPPES file of Aug 9, 2026

Margaret Barbara Kowalczyk, D.D.S., M.S.

Orthodontics and Dentofacial Orthopedics Dentistry · Naperville, IL

Margaret Barbara Kowalczyk, D.D.S., M.S. is an orthodontics and dentofacial orthopedics dentistry with a practice address in Naperville, Illinois, and NPI 1306904974, issued on Dec 5, 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
1306904974
Name
Margaret Barbara Kowalczyk
Credential
D.D.S., M.S.
Primary taxonomy
Orthodontics and Dentofacial Orthopedics Dentistry 1223X0400X
Practice location
230 W Martin Ave, Naperville, IL 60540
Phone
(630) 355-1780
Enumerated
Dec 5, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(630) 355-7303
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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8 nearest orthodontics and dentofacial orthopedics dentistry records → All 473 in Illinois → Look up another NPI →

Verify Margaret Barbara Kowalczyk 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
Find the Illinois license search

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Industry payments in 2024: $61.33

1 payment: food and beverage; the largest payer was Envista Holdings Corporation. The 7,622 providers of this specialty with any payment received $1,641.73 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Margaret Kowalczyk$61.33
  2. Specialty average$1,641.73

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Margaret Barbara Kowalczyk among 473 orthodontics and dentofacial orthopedics dentistry records in Illinois

Margaret Barbara Kowalczyk, D.D.S., M.S. is one of 473 orthodontics and dentofacial orthopedics dentistry records with a practice address in Illinois. 60% 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 2% of them.

  • NPI issued2006 · 2% of these records are older, 73% newer
  • In a Medicare fileYes · 60% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 78% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223X0400X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthodontics and Dentofacial Orthopedics Dentistry providers in Illinois

There are 473 orthodontics and dentofacial orthopedics dentistry records in Illinois.

All 473 in Illinois → Every provider in Naperville → Orthodontics and Dentofacial Orthopedics Dentistry nationwide →

The 8 orthodontics and dentofacial orthopedics dentistry records with the nearest ZIP codes

  1. Eyad Alomari, DDS, MSC, MSDENTNaperville, IL 605401780325431
  2. John Crawford, D.D.S., M.S.Naperville, IL 605401952422248
  3. Michael Erhart, D.D.S.Naperville, IL 605401629295423
  4. Dwight Frey, DDSNaperville, IL 605401295924827
  5. Stephen Hertzberg, D.D.S., M.S.Naperville, IL 605401710164173
  6. Dale Lipe, D.D.S.Naperville, IL 605401598194276
  7. Pranav PatelNaperville, IL 605401861908444
  8. Marcia Sefcheck, D.D.S.Naperville, IL 605401427329317

Common questions

What is Margaret Barbara Kowalczyk, D.D.S., M.S.'s NPI number?

Margaret Barbara Kowalczyk, D.D.S., M.S.'s National Provider Identifier (NPI) is 1306904974, issued on Dec 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Margaret Barbara Kowalczyk, D.D.S., M.S. located?

The NPPES record lists a practice address at 230 W Martin Ave, Naperville, IL, 60540. Phone: (630) 355-1780. Providers update this record themselves, so call before visiting.

How can I verify Margaret Barbara Kowalczyk, D.D.S., M.S.'s license?

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.