Robert C. Johnson, MD
Radiation Oncology Physician · Quincy, IL
Robert C. Johnson, MD is a radiation oncology physician with a practice address in Quincy, Illinois, and NPI 1053308825, issued on Oct 5, 2005. Check the license (Illinois 036141870, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Robert C. Johnson
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 036141870 IL
102829 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1005 Broadway St, Quincy, IL 62301
- Phone
- (217) 223-8400
- Enumerated
- Oct 5, 2005
- Record last updated
- Nov 27, 2023
- Fax
- (217) 223-7327
- Medicaid ID
- 206911414 MO
- Medicare enrollment
- Enrolled (PECOS I20161207000573); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1989
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 277 in Illinois → Look up another NPI →
Also registered at 1005 Broadway St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Clark Andelin, MDObstetrics & Gynecology Physician1013114453
- Arthur Ankeney, MDEmergency Medicine Physician1508426131
- Muhammad Arshid, M.DNeurology Physician1043892631
Verify Robert C. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036141870Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average radiation oncology physician in 2024
343 Medicare Part D claims for 101 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 20 claims were for opioids.
Most prescribed
- Tamsulosin Hcl224 claims
- Hydrocodone-Acetaminophen19 claims
- Mirtazapine16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $890.41
10 payments; by number, the most common kind was food and beverage; the largest payer was Accuray Incorporated. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Blessing HospitalQuincy, IL · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Robert C. Johnson among 277 radiation oncology physician records in Illinois
Robert C. Johnson, MD is one of 277 radiation oncology physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1989 · median 2004 among the 184 with a school on file
- Record last updated2023 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Illinois
There are 277 radiation oncology physician records in Illinois.
All 277 in Illinois → Every provider in Quincy → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Mark Khil, M.D.Quincy, IL 623011851398598
- Young Yu, M.D.Quincy, IL 623011679570865
- Susan Laduzinsky, MDShiloh, IL 622691942202155
- Jason Lee, MDShiloh, IL 622691851618995
- Ryan Mueller, MDO Fallon, IL 622691912571654
- Camille Williams, M.D.O Fallon, IL 622691649436510
- Jacob Witt, M.D.O Fallon, IL 622691891157871
- Casey Duncan, MDEffingham, IL 624011487720942
Common questions
What is Robert C. Johnson, MD's NPI number?
Robert C. Johnson, MD's National Provider Identifier (NPI) is 1053308825, issued on Oct 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert C. Johnson, MD located?
The NPPES record lists a practice address at 1005 Broadway St, Quincy, IL, 62301. Phone: (217) 223-8400. Providers update this record themselves, so call before visiting.
How can I verify Robert C. Johnson, MD's license?
NPPES lists Illinois license number 036141870, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert C. Johnson, MD prescribe under Medicare Part D?
In 2024, Robert C. Johnson, MD had 343 Medicare Part D claims for 101 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.