Rena Beth Zimmerman, M.D.
Radiation Oncology Physician · McHenry, IL
Rena Beth 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 (Illinois 036071196, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Rena Beth Zimmerman
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 036071196 IL
PT20525 ND
35053193Z OH
Self-reported in NPPES; status is on the state search - Practice location
- 4305 W Medical Center Dr, McHenry, IL 60050
- Phone
- (815) 344-8000
- Enumerated
- Mar 22, 2006
- Record last updated
- Sep 24, 2025
- Fax
- (815) 759-4075
- Medicaid ID
- 0671849 OH
- Medicare enrollment
- Enrolled (PECOS I20250130002430); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 277 in Illinois → Look up another NPI →
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, CNSOncology Clinical Nurse Specialist1245742949
- Terrence Bugno, MDRadiation Oncology Physician1235163437
- Tina Han, LCGCGenetic Counselor (M.S.)1508394735
- Shunqing Zhang, MDRadiation Oncology Physician1649773425
Verify Rena Beth Zimmerman 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 036071196Check 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 134 among the 4,851 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 hospitals and group practices
- Faith Regional Health ServicesNorfolk, NE · Acute Care Hospitals3 of 5 stars
- Genesis Medical Group, LLCZanesville, OH
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.
Rena Beth Zimmerman among 277 radiation oncology physician records in Illinois
Rena Beth Zimmerman, M.D. 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 2006, is newer than 19% of them.
- NPI issued2006 · 19% of these records are older, 51% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1983 · median 2004 among the 184 with a school on file
- Record last updated2025 · 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 McHenry → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Terrence Bugno, MDMcHenry, IL 600501235163437
- Shunqing Zhang, MDMcHenry, IL 600501649773425
- Joy Coleman, M.D.Libertyville, IL 600481598872111
- Dean Conterato, MDLibertyville, IL 600481033110192
- Majid Mohiuddin, M.D.Libertyville, IL 600481568415065
- James Ruffer, M.D.Libertyville, IL 600481679564629
- Joseph Imperato, M.D.Lake Forest, IL 600451346215183
- Marc Posner, M.D.Lake Forest, IL 600451871569574
Common questions
What is Rena Beth Zimmerman, M.D.'s NPI number?
Rena Beth 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 Beth 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 Beth Zimmerman, M.D.'s license?
NPPES lists Illinois license number 036071196, 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 Rena Beth Zimmerman, M.D. prescribe under Medicare Part D?
In 2024, Rena Beth Zimmerman, M.D. had 19 Medicare Part D claims for 13 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.