DR. CHARLES ARTHUR AMBELANG M.D.
NPI 1477718377
Radiology - Diagnostic Radiology in Rockford, IL

Active since July 21, 2008PECOS EnrolledAccepts Medicare Assignment
75/100
CMS Quality Rating
5666 E STATE ST, ROCKFORD, IL 61108(815) 226-2000 Get Directions Write a Review

NPPES record last updated: May 26, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: May 26, 2026, Dec 13, 2018 (2 updates tracked since 2018).

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

NPI1477718377
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameDR. CHARLES ARTHUR AMBELANGCredential: M.D.
Location Address5666 E STATE STRockford, IL 61108-2425
Mailing Address5666 E State StRockford, IL 61108-2425 · (815) 226-2000
Sole ProprietorNo
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2008
Enumeration DateJuly 21, 2008
Last NPPES UpdateMay 26, 20262 updates tracked since enumeration
NPPES CertifiedMay 26, 2026
✔ NPI 1477718377 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Licenses✔ Licensed in IL · 036134846✔ Licensed in MI · L2511673✔ Licensed in WI · 53957-020
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
5666 E STATE ST, Rockford, IL 61108

Secondary Practice Location 1

Location 12799 W Grand BlvdDetroit, MI 48202-2608 · Phone (313) 694-4916

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.

PECOS PAC ID6800039413
PECOS Enrollment IDI20140711001467
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare 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.

Diagnostic Radiology
5666 E STATE ST
Rockford, IL 61108
  • Reassigned Medicare billing, Illinois enrollment
  • 19 clinicians in this Medicare group
Internal Medicine
8600 N STATE ROUTE 91
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.

X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
772 services630 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
236 services236 patients
Screening 3d breast mammography 77063
Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.
225 services225 patients
Ct scan head or brain without contrast 70450
A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.
192 services186 patients
Dxa bone density measurement of hip, pelvis, spine 77080
A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.
171 services171 patients
X-ray of chest, 2 views 71046
A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.
169 services167 patients

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, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140012
Location403 E 1st StDixon, IL 61021 · Lee County
Emergency services Birthing friendly

Cgh Medical Center

Acute Care Hospitals · Sterling, IL
2/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number140043
Location100 East Lefevre RoadSterling, IL 61081 · Whiteside County
Emergency services Birthing friendly

Osf Saint Elizabeth Mdl Ctr

Acute Care Hospitals · Ottawa, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140110
Location1100 E Norris DriveOttawa, IL 61350 · La Salle County
Emergency services Birthing friendly

Uw Health

Acute Care Hospitals · Rockford, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140228
Location1401 East State StreetRockford, IL 61104 · Winnebago County
Emergency services Birthing friendly

Saint Anthony Medical Center

Acute Care Hospitals · Rockford, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140233
Location5666 East State StreetRockford, IL 61108 · Winnebago County
Emergency services Birthing friendly

Physician 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.

New Patient
$85.71 typical visit price
range $54.80 – $168.44
Typical copayment $21.42 (range $13.70 – $42.11)
Most-billed visit code 99203
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice

Reported Quality Measures

Prevention of Central Venous Catheter (CVC) - Related Bloodstream Infections
Percentage of patients, regardless of age, who undergo central venous catheter (CVC) insertion for whom CVC was inserted with all elements of maximal sterile barrier technique, hand hygiene, skin preparation and, if ultrasound is used, sterile ultrasound…
94%32 patients
Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques
Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…
100%816 patients
Radiology: Reminder System for Screening Mammograms
Percentage of patients undergoing a screening mammogram whose information is entered into a reminder system with a target due date for the next mammogram
100%365 patients
Radiology: Stenosis Measurement in Carotid Imaging Reports
Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…
91%54 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

Specialist
5666 E STATE ST
ROCKFORD, IL 61108
Internal Medicine
5666 E STATE ST
ROCKFORD, IL 61108
Nurse Anesthetist, Certified Registered
5666 E STATE ST
ROCKFORD, IL 61108
Nurse Practitioner (Family)
5666 E STATE ST
ROCKFORD, IL 61108
Radiology (Diagnostic Radiology)
5666 E STATE ST
ROCKFORD, IL 61108
Nurse Practitioner (Family)
5666 E STATE ST
ROCKFORD, IL 61108
Physical Therapist
5666 E STATE ST
ROCKFORD, IL 61108
Internal Medicine
5666 E STATE ST
ROCKFORD, IL 61108

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.