Marc R. Dejong, MD
Marc R. Dejong is a Sports Medicine (Internal Medicine) Physician provider (Internal Medicine) practicing in Springfield, IL, registered in the NPPES registry with NPI 1477549541 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1477549541 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Marc R. Dejong |
| Credential | MD |
| Sex | Male |
| Practice address | 800 N 1ST ST, Springfield, IL, 62702 |
| Phone | 2175287541 |
| Fax | 2175271103 |
| Enumeration date | 2005-09-23 |
| Last updated in NPPES | 2020-05-22 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | Secondary | 036114259 | IL |
| 207RS0010X | Sports Medicine (Internal Medicine) Physician | Primary | 036114259 | IL |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 036114259 | Medicaid | IL | — |
Copy-ready billing details
Provider: Marc Dejong, MD NPI: 1477549541 Taxonomy: 207RS0010X (Sports Medicine (Internal Medicine) Physician) Address: 800 N 1ST ST, Springfield, IL, 62702
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1154321222 | Piero Capecci | Individual | Adult Reconstructive Orthopaedic Surgery Physician | Springfield, IL |
| 1649271073 | Lorrie Cuartas | Individual | Family Nurse Practitioner | Springfield, IL |
| 1740282847 | William Payne | Individual | Orthopaedic Surgery of the Spine Physician | Springfield, IL |
| 1376524470 | Mary Sipes Saathoff | Individual | Foot & Ankle Surgery Podiatrist | Springfield, IL |
| 1821042680 | Leslie Acakpo-Satchivi | Individual | Neurological Surgery Physician | Springfield, IL |
| 1235177023 | Brett Wolters | Individual | Orthopaedic Surgery Physician | Springfield, IL |
| 1982623401 | Robert Nadler | Individual | Urology Physician | Springfield, IL |
| 1972522720 | Daniel Lange | Individual | Urology Physician | Springfield, IL |
Verify this record
Cross-check NPI 1477549541 against the authoritative CMS record: view Marc R. Dejong on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-05-22.