Registry data as of Aug 27, 2026

Mark Demchak, ATC

Athletic Trainer · Warrenville, IL

Mark Demchak, ATC is an athletic trainer with a practice address in Warrenville, Illinois, and NPI 1043655145, issued on May 2, 2013. Check the license with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1043655145
Name
Mark Demchak
Credential
ATC
Primary taxonomy
Athletic Trainer 2255A2300X
Practice location
27650 Ferry RD, Warrenville, IL 60555
Phone
(630) 225-2663
Enumerated
May 2, 2013
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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Also registered at 27650 Ferry RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michele Arthurs, ATCAthletic Trainer1417532441
  2. Emily Atchison, BSN, RNOrthopedic Registered Nurse1235006891
  3. Lisa Augustyn, PTPhysical Therapist1043460868
  4. Brian Babka, MDSports Medicine (Family Medicine) Physician1881688638
  5. Shannon Backes, PAPhysician Assistant1386896793
  6. Joy Baganz, OTOccupational Therapist1295774495

Verify Mark Demchak 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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

20 athletic trainer records list a Warrenville practice address

They are 20 of the 517 NPPES records with a Warrenville practice address, and 2,119 athletic trainer records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 20 in Warrenville → All 2,119 in Illinois → Every provider in Warrenville →

Other athletic trainer records in Illinois

  1. Andrew Accardi, A.T.C/LDixon, IL1750359592
  2. Kasey Acito, LAT, ATCBolingbrook, IL1841640745
  3. Steven Adamkiewicz, M.S.,ATC/LLombard, IL1326058686
  4. Kaitlin Adams, ATCCaledonia, IL1760807937
  5. Laura Addy, ATCEvanston, IL1497111769
  6. Jason Adolph, MS, LAT ATCShorewood, IL1255390266
  7. Aristidis Adrahtas, ATC, MSChicago, IL1962038604
  8. Inga AgibalovaNorthbrook, IL1255099610
  9. Melanie AhlgrimChicago, IL1538136593
  10. Christian Ahlstrom, MAT, LAT, ATCWilmette, IL1396110128

Common questions

What is Mark Demchak, ATC's NPI number?

Mark Demchak, ATC's National Provider Identifier (NPI) is 1043655145, issued on May 2, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Mark Demchak, ATC located?

The NPPES record lists a practice address at 27650 Ferry RD, Warrenville, IL, 60555. Phone: (630) 225-2663. Providers update this record themselves, so call before visiting.

How can I verify Mark Demchak, ATC'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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.