Rena Zimmerman, M.D.
Radiation Oncology Physician · McHenry, IL
Rena Zimmerman, M.D. is a radiation oncology physician with a practice address in McHenry, Illinois, and NPI 1851350318, issued on Mar 22, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Rena Zimmerman
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- Practice location
- 4305 W Medical Center Dr, McHenry, IL 60050
- Phone
- (815) 344-8000
- Enumerated
- Mar 22, 2006
- Entity
- Type 1 · individual
Also registered at 4305 W Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lora Anderson, RD CSO LDNOncology Nutrition Registered Dietitian1982285672
- Jill Benedeck, APRN, CNSClinical Nurse Specialist1245742949
- Terrence Bugno, MDRadiation Oncology Physician1235163437
- Tina Han, LCGCGenetic Counselor (M.S.)1508394735
- Shunqing Zhang, MDRadiation Oncology Physician1649773425
Verify Rena Zimmerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
86% fewer Medicare Part D claims than the average radiation oncology physician in 2024
19 Medicare Part D claims for 13 beneficiaries, against an average of 135 among the 4,225 providers of this specialty who prescribed in Part D.
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.
2 hospital and facility affiliations
- Faith Regional Health ServicesNorfolk, NE · Acute Care Hospitals3 of 5 stars
- Genesis Medical Group, LLCZanesville, OH
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Radiation Oncology Physician providers in Illinois
There are 244 radiation oncology physician records in Illinois.
Other radiation oncology physician records in Illinois
- Mohamed Abazeed, MD, PHDChicago, IL1205096609
- Christopher Abraham, MDSpringfield, IL1083900294
- Ross Abrams, M.D.Chicago, IL1356317564
- Iftekhar Ahmad, M.D.Rockford, IL1164641791
- Elke Aippersbach, M.D.,M.SC.,Oak Lawn, IL1285754895
- Adil Akthar, M.D.Warrenville, IL1598175531
- Sobiya Ansari, M.D.Chicago, IL1336554666
- Salwa Asaad, MDJoliet, IL1831170539
- Samuel Au, M.D.Springfield, IL1578565420
- Azhar AwanChicago, IL1497829725
Common questions
What is Rena Zimmerman, M.D.'s NPI number?
Rena Zimmerman, M.D.'s National Provider Identifier (NPI) is 1851350318, issued on Mar 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rena Zimmerman, M.D. located?
The NPPES record lists a practice address at 4305 W Medical Center Dr, McHenry, IL, 60050. Phone: (815) 344-8000. Providers update this record themselves, so call before visiting.
How can I verify Rena Zimmerman, M.D.'s license?
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 Rena Zimmerman, M.D. prescribe under Medicare Part D?
In 2024, Rena Zimmerman, M.D. had 19 Medicare Part D claims for 13 beneficiaries; the average among radiation oncology physician prescribers was 135. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.