Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Charles Arthur Ambelang, MD

Individual provider Diagnostic Radiology Physician · NPI 1477718377

Dr. Charles Arthur Ambelang, MD practises Diagnostic Radiology in Rockford, Illinois. Graduated from University of Wisconsin School of Medicine in 2008, 18 years ago. Practices with Osf Multi-Specialty Group, a 2,128-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois, Michigan and Wisconsin.

Years since qualifying
18
Trained at
University of Wisconsin School of Medicine
Licensed in
IL, MI, WI
In the registry since
2008
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5666 E State St
Rockford, IL 61108-2425
Phone: (815) 226-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2799 W Grand Blvd, Detroit, MI 48202-2608 — (313) 694-4916

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 036134846 (IL)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence L2511673 (MI)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 53957-020 (WI)

Record details

NPI number1477718377
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 21, 2008
Last updated in NPPESMay 26, 2026
Certification dateMay 26, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice Osf Multi-Specialty Group — 2128 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations7 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients3,237
Services billed 5,689 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $16 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Osf Saint Elizabeth Mdl Ctr Hospital · Peru, IL · listed as St Margaret's Health-Peru
  • Saint Anthony Medical Center Hospital · Rockford, IL
  • Northwestern Medicine Kishwaukee Hospital Hospital · Dekalb, IL
  • Osf Saint Katharine Medical Center Hospital · Dixon, IL
  • Uw Health Hospital · Rockford, IL

Colleagues at Osf Multi-Specialty Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2128 clinicians in the practice; 12 are shown here.

Other providers in Rockford