Marc R. Dejong, MD
Sports Medicine (Internal Medicine) Physician · Springfield, IL
Marc R. Dejong, MD is a sports medicine (internal medicine) physician with a practice address in Springfield, Illinois, and NPI 1477549541, issued on Sep 23, 2005. Check the license (Illinois 036114259, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Marc R. Dejong
- Credential
- MD
- Primary taxonomy
- Sports Medicine (Internal Medicine) Physician 207RS0010X
- License number
- 036114259 IL
Self-reported in NPPES; status is on the state search - Practice location
- 800 N 1St St, Springfield, IL 62702
- Phone
- (217) 528-7541
- Enumerated
- Sep 23, 2005
- Record last updated
- May 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (217) 527-1103
- Medicaid ID
- 036114259 IL
- Medicare enrollment
- Enrolled (PECOS I20051011001142); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 2001
- Entity
- Type 1 · individual
Also registered at 800 N 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sunil Agarwal, M.D, M.P.H., PHDInterventional Cardiology Physician1710204334
- Bhuvnesh Aggarwal, M.D.Interventional Cardiology Physician1760770101
- Krishna AkellaClinical Cardiac Electrophysiology Physician1982067211
Verify Marc R. Dejong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036114259Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average sports medicine (internal medicine) physician in 2024
189 Medicare Part D claims for 145 beneficiaries, against an average of 605 among the 227 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.
Most prescribed
- Prednisone96 claims
- Meloxicam37 claims
- Tizanidine Hcl17 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $117.82
7 payments; by number, the most common kind was food and beverage; the largest payer was Ferring Pharmaceuticals Inc. The 125 providers of this specialty with any payment received $667.42 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.
Bills Medicare through one group practice
- Springfield Clinic, LLPSpringfield, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sports Medicine (Internal Medicine) Physician providers in Illinois
There are 19 sports medicine (internal medicine) physician records in Illinois.
Other sports medicine (internal medicine) physician records in Illinois
- Stephen Adams, MDChicago, IL1922157635
- Jeremy Alland, MDChicago, IL1861755035
- Michael Fragen, MDLombard, IL1245359041
- Michael Hanna, M.D.Chicago, IL1487810842
- James John, M.D.Willowbrook, IL1730290198
- Cynthia Labella, MDChicago, IL1033104955
- Lara Lee, M.D.Chicago, IL1710111976
- Balakrishnan Natarajan, MDDes Plaines, IL1295799013
- David Neighbors, MDBreese, IL1811945264
- Eliza Pierko, M.D.Berwyn, IL1659680015
Common questions
What is Marc R. Dejong, MD's NPI number?
Marc R. Dejong, MD's National Provider Identifier (NPI) is 1477549541, issued on Sep 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marc R. Dejong, MD located?
The NPPES record lists a practice address at 800 N 1St St, Springfield, IL, 62702. Phone: (217) 528-7541. Providers update this record themselves, so call before visiting.
How can I verify Marc R. Dejong, MD's license?
NPPES lists Illinois license number 036114259, as entered by the provider. 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.
How much does Marc R. Dejong, MD prescribe under Medicare Part D?
In 2024, Marc R. Dejong, MD had 189 Medicare Part D claims for 145 beneficiaries; the average among sports medicine (internal medicine) physician prescribers was 605. Part D covers Medicare prescriptions only.
What is Marc R. Dejong, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.