Dr. Charles Arthur Ambelang, MD
- Medicare services, 2024
- 5,078
- Medicare patients, 2024
- 3,237
- Part D claims, 2022
- 18
- MIPS score, 2024
- 93
- Hospital affiliations
- 5
- Practice address
- 5666 East State Street, Rockford, IL 61108
- Practice phone
- Call (815) 226-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ambelang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Charles Arthur Ambelang is a diagnostic radiologist in Rockford, Illinois
Dr. Ambelang practices at OSF Saint Anthony Medical Center in Rockford, Illinois, part of OSF HealthCare System.
Dr. Ambelang's NPI, 1477718377, was assigned on July 21, 2008. Dr. Ambelang graduated from University of Wisconsin School of Medicine in 2008. Dr. Ambelang holds Wisconsin license 53957-020.
- NPI
- 1477718377NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800039413
- NPI enumeration date
- July 21, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 226-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles Arthur Ambelang practices at OSF Saint Anthony Medical Center in Rockford, Illinois
Dr. Ambelang's primary practice is OSF Saint Anthony Medical Center, at 5666 East State Street, Rockford, IL 61108 in Winnebago County. The practice phone is (815) 226-2000.
- OSF Saint Anthony Medical Center5666 East State Street, Rockford, IL 61108 · Winnebago CountyPhone(815) 226-2000
Source: Dmand AI Affiliation Data
Dr. Charles Arthur Ambelang is affiliated with 5 sites of care and 2 medical groups
Dr. Ambelang's primary practice is OSF Saint Anthony Medical Center in Rockford, Illinois, part of OSF HealthCare System. Dr. Ambelang is also affiliated with UW Health SwedishAmerican Hospital. The medical group on file is OSF Multi-Specialty Group. Dmand AI also links Dr. Ambelang to 3 more hospitals and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Charles Arthur Ambelang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ambelang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OSF Saint Anthony Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles Arthur Ambelang is one of 1,336 diagnostic radiologists in Illinois
Diagnostic radiology is Dr. Ambelang's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Ambelang's licenses on file in 2 states: Wisconsin and Michigan.
Specialties and state licenses
- Diagnostic radiology, WisconsinPrimary
- Michigan license
Diagnostic radiologists near Dr. Ambelang
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Charles Arthur Ambelang billed Medicare for 5,078 services in 2024
CMS data shows 5,078 Medicare services from Dr. Ambelang across 71 procedure codes in 2024, for 3,237 Medicare patients. Medicare paid $121,474 for them.
Dr. Ambelang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 4,5982024: 4,4274%
- Tests and treatments
- 2023: 3112024: 36116%
- Surgery
- 2023: 2102024: 24517%
- Other services
- 2023: 662024: 4532%
Where Dr. Ambelang's Medicare services took place, 2024
- In an office88217%
- In a facility4,19683%
Dr. Ambelang compared with the Illinois median for diagnostic radiologists, 2024
- Dr. Ambelang
- Illinois median
- Medicare services
- 5,078vs 2,57597% above
- Medicare patients
- 3,237vs 1,83676% above
- Part D claims
- 18vs 1429% above
Medians across 1,261 diagnostic radiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Ambelang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ambelang and other diagnostic radiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles Arthur Ambelang treated 3,237 Medicare patients in 2024, average age 74
CMS counts 3,237 Medicare patients who saw Dr. Ambelang in 2024. The largest group is 65 to 74, with 1,373 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ambelang's median patient age at 66, with 65% women.
Dr. Ambelang's Medicare patients by age, 2024
Dr. Ambelang's Medicare patients by sex, 2024
- Women2,03263%
- Men1,20537%
Chronic conditions among Dr. Ambelang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes35%
- Chronic kidney disease34%
- Ischemic heart disease32%
- Mood disorders29%
- Anxiety28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ambelang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women65%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles Arthur Ambelang wrote 18 Medicare Part D claims in 2022
In 2022, Dr. Ambelang wrote 18 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $36 in total drug cost. In 2021, CMS named 15 claims across 1 drug.
Dr. Ambelang's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 152022: 1820%
Drugs named by CMS: 1 in 2022, 1 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Charles Arthur Ambelang scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Ambelang for performance year 2024, reported as part of a group. Dr. Ambelang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Ambelang's MIPS scores, performance year 2024
- 93of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Charles Arthur Ambelang received $331 in industry payments from 2018 to 2025
CMS Open Payments shows 13 general payments to Dr. Ambelang from 6 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $140.
General payments to Dr. Ambelang by program year, 2018 to 2025
Companies that paid Dr. Ambelang the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Charles Arthur Ambelang graduated from University of Wisconsin School of Medicine
Dr. Ambelang graduated from University of Wisconsin School of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles Arthur Ambelang's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Charles Arthur Ambelang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Charles Arthur Ambelang's NPI number?
Dr. Charles Arthur Ambelang's NPI number is 1477718377. It was assigned on July 21, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles Arthur Ambelang?
Dr. Charles Arthur Ambelang is a diagnostic radiologist in Rockford, Illinois. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Charles Arthur Ambelang practice?
Dr. Ambelang practices at 5666 East State Street, Rockford, IL 61108. Dr. Ambelang's primary practice is OSF Saint Anthony Medical Center in Rockford, Illinois, part of OSF HealthCare System. Dmand AI also links Dr. Ambelang to 3 hospitals and 1 medical group.
What is Dr. Charles Arthur Ambelang's office phone number?
The practice phone on file for Dr. Ambelang is (815) 226-2000.
What is Dr. Charles Arthur Ambelang's medical license number?
Dr. Ambelang holds Wisconsin license 53957-020, one of the licenses on file in 2 states.
Which states has Dr. Charles Arthur Ambelang been licensed in?
Dmand AI has state licenses on file for Dr. Ambelang in Wisconsin and Michigan.
Which hospitals is Dr. Charles Arthur Ambelang affiliated with?
Dr. Ambelang practices at OSF Saint Anthony Medical Center in Rockford, Illinois. Dr. Ambelang is also affiliated with UW Health SwedishAmerican Hospital. Dmand AI links Dr. Ambelang to 3 more hospitals.
What medical group is Dr. Charles Arthur Ambelang part of?
Dr. Ambelang is linked to OSF Multi-Specialty Group. Dmand AI links Dr. Ambelang to 1 more medical group.
Does Dr. Charles Arthur Ambelang accept Medicare?
Yes. CMS data shows Dr. Ambelang billed Medicare for 5,078 services in 2024, and Dr. Ambelang accepts Medicare assignment.
What is Dr. Charles Arthur Ambelang's MIPS score?
Dr. Ambelang's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Charles Arthur Ambelang see?
CMS counts 3,237 Medicare patients who saw Dr. Ambelang in 2024, with an average age of 74.
What services does Dr. Charles Arthur Ambelang bill to Medicare?
In 2024, Dr. Ambelang's most billed Medicare services were diagnostic imaging (71045), radiation oncology (77067) and radiation oncology (77063).
Where did Dr. Charles Arthur Ambelang go to medical school?
Dr. Ambelang graduated from University of Wisconsin School of Medicine in 2008.
What drugs does Dr. Charles Arthur Ambelang prescribe most?
In 2022 Medicare Part D data, Dr. Ambelang's most prescribed drugs by claims were Prednisone.
Has Dr. Charles Arthur Ambelang received payments from drug or device companies?
CMS Open Payments shows $331 in general payments to Dr. Ambelang from 6 companies from 2018 to 2025. The largest total came from Inari Medical, Inc.
How long has Dr. Charles Arthur Ambelang been practicing?
Dr. Ambelang graduated from medical school in 2008, 18 years ago.
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