NPPES file of Aug 9, 2026

Gregory Karl Mork, D.O.

Diagnostic Radiology Physician · Waukegan, IL

Gregory Karl Mork, D.O. is a diagnostic radiology physician with a practice address in Waukegan, Illinois, and NPI 1720222193, issued on Apr 28, 2009. Check the license on the Illinois Department of Financial and Professional Regulation; 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
1720222193
Name
Gregory Karl Mork
Credential
D.O.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
52821-021 WI
Self-reported in NPPES; status is on the state search
Practice location
1324 N Sheridan RD, Waukegan, IL 60085
Phone
(847) 360-4189
Enumerated
Apr 28, 2009
Record last updated
Aug 10, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(847) 360-4013
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 diagnostic radiology physician records → All 1,874 in Illinois → Look up another NPI →

Also registered at 1324 N Sheridan RD

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

  1. Kelly ApfelRegistered Dietitian1932565439
  2. Amy BrogleyCertified Registered Nurse Anesthetist1598335564
  3. Shannon Brumund, M.D.Emergency Medicine Physician1588989107
  4. Natalie Butler, FNPFamily Nurse Practitioner1851936272
  5. Erwin Cabacungan, M.D.Neonatal-Perinatal Medicine Physician1932121803
  6. Haili Campanella, NPCritical Care Medicine Nurse Practitioner1184151193

Verify Gregory Karl Mork in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck 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
Open the Illinois license search

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Industry payments in 2024: $145.00

1 payment: travel and lodging; the largest payer was Medtronic, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Mork$145.00
  2. Specialty average$2,488.38

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

Gregory Karl Mork among 1,874 diagnostic radiology physician records in Illinois

Gregory Karl Mork, D.O. is one of 1,874 diagnostic radiology physician 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 2009, is newer than 60% of them.

  • NPI issued2009 · 60% of these records are older, 36% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 64% of these records are
  • Record last updated2010 · 43% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in Illinois

There are 1,874 diagnostic radiology physician records in Illinois.

All 1,874 in Illinois → Every provider in Waukegan → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Robert Post, M.D.Waukegan, IL 600851841252848
  2. Mary Barr, M.D.Great Lakes, IL 600881447309166
  3. Alex KamenetskyGreat Lakes, IL 600881518939685
  4. Harsha Mehta, M.D.Northfield, IL 600931871730119
  5. Riaz AhmedSkokie, IL 600761831475870
  6. Jonathan Alexander, M.D.Skokie, IL 600761245223098
  7. Avrum Epstein, M.D.Skokie, IL 600761407849250
  8. Najma Mirza, M.D.Skokie, IL 600761043250053

Common questions

What is Gregory Karl Mork, D.O.'s NPI number?

Gregory Karl Mork, D.O.'s National Provider Identifier (NPI) is 1720222193, issued on Apr 28, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Karl Mork, D.O. located?

The NPPES record lists a practice address at 1324 N Sheridan RD, Waukegan, IL, 60085. Phone: (847) 360-4189. Providers update this record themselves, so call before visiting.

How can I verify Gregory Karl Mork, D.O.'s license?

Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.