DR. CHARLES ARTHUR AMBELANG M.D.
NPI 1477718377
Radiology - Diagnostic Radiology in Rockford, IL
About Dr. Charles Arthur Ambelang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHARLES ARTHUR AMBELANG M.D. (NPI 1477718377) is an individual diagnostic radiology provider in Rockford, Illinois, licensed in Illinois (036134846) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Katherine Shaw Bethea Hospital, and maintains a secondary practice location in Detroit.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Charles Arthur Ambelang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Charles Ambelang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockford, IL 61108
- Reassigned Medicare billing, Illinois enrollment
- 19 clinicians in this Medicare group
Peoria, IL 61615
- Reassigned Medicare billing, Illinois enrollment
- 2,944 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 92
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Katherine Shaw Bethea Hospital
Acute Care Hospitals · Dixon, ILCgh Medical Center
Acute Care Hospitals · Sterling, ILOsf Saint Elizabeth Mdl Ctr
Acute Care Hospitals · Ottawa, ILUw Health
Acute Care Hospitals · Rockford, ILSaint Anthony Medical Center
Acute Care Hospitals · Rockford, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 61108 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Charles Ambelang's NPI number?
The NPI number for Charles Ambelang is 1477718377. It was assigned to this individual provider in the NPPES registry on July 21, 2008.
Where is Charles Ambelang located?
Charles Ambelang practices at 5666 E State St, Rockford, IL 61108. The listed phone number is (815) 226-2000.
What is Charles Ambelang's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Charles Ambelang enrolled in Medicare?
Yes. Charles Ambelang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Charles Ambelang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Ambelang reassigns Medicare benefits to 2 organizations: Rockford Radiology Assoc (Rockford, IL) and Osf Multi-Specialty Group (Peoria, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Charles Ambelang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Charles Ambelang affiliated with any hospitals?
According to CMS data, Charles Ambelang is affiliated with Katherine Shaw Bethea Hospital, Cgh Medical Center, Osf Saint Elizabeth Mdl Ctr, Uw Health and Saint Anthony Medical Center.
When was this NPI record last updated?
The NPPES record for Charles Ambelang was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.