DR. RENA BETH ZIMMERMAN M.D.
NPI 1851350318
Radiology - Radiation Oncology in Mchenry, IL

Q: What is Rena Zimmerman's NPI number?

The NPI number for Rena Zimmerman is 1851350318. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Q: What is Rena Zimmerman's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for Rena Zimmerman was last updated on September 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since March 22, 2006PECOS EnrolledAccepts Medicare Assignment

4305 W MEDICAL CENTER DR, MCHENRY, IL 60050(815) 344-8000(815) 759-4075 Get Directions Write a Review

NPPES record last updated: September 24, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 26, 2022, Feb 8, 2019, Oct 12, 2018 and 2 more (5 updates tracked since 2018).

On this page

About Dr. Rena Beth Zimmerman M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. RENA BETH ZIMMERMAN M.D. (NPI 1851350318) is an individual radiation oncology provider in Mchenry, Illinois, licensed in Illinois (036071196) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS, is affiliated with Bryan Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1851350318

Entity TypeIndividualFemale

Primary Taxonomy2085R0001X

Provider Legal NameDR. RENA BETH ZIMMERMANCredential: M.D.

Location Address4305 W MEDICAL CENTER DRMchenry, IL 60050-8425

Mailing AddressPo Box 734138Chicago, IL 60673-4138 · (815) 344-8000 · Fax (815) 759-4075

Phone(815) 344-8000

Fax(815) 759-4075

Sole ProprietorNo

Medical School CMSOtherGraduated 1983

Enumeration DateMarch 22, 2006

Last NPPES UpdateSeptember 24, 20255 updates tracked since enumeration

NPPES CertifiedSeptember 24, 2025

✔ NPI 1851350318 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

Licenses✔ Licensed in IL · 036071196✔ Licensed in OH · 35053193Z✔ Licensed in ND · PT20525

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

4305 W MEDICAL CENTER DR, Mchenry, IL 60050

Open in Google Maps ↗

Secondary Practice Locations 2

Location 12305 37th Ave SWMinot, ND 58701-7669 · Phone (701) 418-8000

Location 2831 S BroadwayMinot, ND 58701-4636 · Phone (701) 418-8000

Other Identifiers 3

OtherG8889434Medicare

Medicaid0671849OH

OtherP000813208Medicare Railroad

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Nebraska, CareSource and more.Insurance ›

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. Rena Beth Zimmerman 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 ID9537058417

PECOS Enrollment IDI20040311000183, I20250130002430

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

Medicare enrollment records show Rena Zimmerman reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Promedica Central Physicians

249 mi

Family Medicine

100 MADISON AVE, MSC-S38805
Toledo, OH 43604

Reassigned Medicare billing, Ohio enrollment
1,072 clinicians in this Medicare group

NPI 1043270150 (567) 585-1964

The Metrohealth System

345 mi

Multi-Specialty

2500 METROHEALTH DR
Cleveland, OH 44109

Reassigned Medicare billing, Ohio enrollment
2,147 clinicians in this Medicare group

NPI 1053353896 (216) 957-2442

Genesis Medical Group LLC

364 mi

General Practice

945 BETHESDA DR STE 200
Zanesville, OH 43701

Reassigned Medicare billing, Ohio enrollment
300 clinicians in this Medicare group

NPI 1063663433 (740) 450-6147

Somc Medical Care Foundation, Inc.

372 mi

Diagnostic Radiology

1805 27TH ST
Portsmouth, OH 45662

Reassigned Medicare billing, Ohio enrollment
549 clinicians in this Medicare group

NPI 1366686230 (740) 356-8117

Faith Regional Health Services

467 mi

Emergency Medicine

2700 W NORFOLK AVE
Norfolk, NE 68701

Reassigned Medicare billing, Nebraska enrollment
40 clinicians in this Medicare group

NPI 1104854199 (402) 371-4880

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 17

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.

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

266 services22 patients

Ct guidance for insertion of radiation therapy fields 77014

189 services20 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

54 services23 patients

Radiation treatment management, 5 treatment sessions 77427

51 services21 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

50 services16 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

37 services14 patients

Calculation of radiation therapy dose 77300

34 services11 patients

Design and construction of complex radiation treatment device 77334

33 services16 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

21 services21 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

19 services15 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

16 services16 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

15 services15 patients

Complex radiation therapy planning 77263

14 services14 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

14 services12 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

13 services13 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

11 services11 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

11 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Bryan Medical Center

Acute Care Hospitals · Lincoln, NE

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280003

Location1600 South 48th StLincoln, NE 68506 · Lancaster County

Emergency services Birthing friendly

Faith Regional Health Services

Acute Care Hospitals · Norfolk, NE

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number280125

Location2700 West Norfolk AveNorfolk, NE 68701 · Madison County

Emergency services Birthing friendly

Genesis Hospital

Acute Care Hospitals · Zanesville, OH

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360039

Location2951 Maple AvenueZanesville, OH 43701 · Muskingum County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60050 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

$168.44 typical visit price

range $54.80 – $168.44

Typical copayment $42.11 (range $13.70 – $42.11)

Most-billed visit code 99205

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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Breast prosthesis, mastectomy bra, without integrated breast prosthesis form, any size, any type L8000

DME-Orthotic Devices · category DF000N

1 supplier48 claims113 services$32.33 avg. paid by Medicare

Breast prosthesis, mastectomy form L8020

DME-Orthotic Devices · category DF000N

1 supplier11 claims11 services$41.73 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TERRENCE J BUGNO MD

Radiology (Radiation Oncology)

4305 W MEDICAL CENTER DR
MCHENRY, IL 60050

McHenry County (815) 344-8000

JILL C BENEDECK APRN, CNS

Clinical Nurse Specialist (Oncology)

4305 W MEDICAL CENTER DR
MCHENRY, IL 60050

McHenry County (815) 344-8000

TINA HAN LCGC

Genetic Counselor, MS

4305 W MEDICAL CENTER DR
MCHENRY, IL 60050

McHenry County (815) 759-4502

DR. SHUNQING ZHANG MD

Radiology (Radiation Oncology)

4305 W MEDICAL CENTER DR
MCHENRY, IL 60050

McHenry County (815) 344-8000

INTEGRATIVE RADIATION ONCOLOGY CONSULTANTS

Radiology (Radiation Oncology)

4305 W MEDICAL CENTER DR
MCHENRY, IL 60050

McHenry County (815) 344-8000

ILLINOIS CANCER SPECIALISTS

Internal Medicine (Hematology & Oncology)

4305 W MEDICAL CENTER DR, STE 1
MCHENRY, IL 60050

McHenry County (815) 363-0066

LORA ANDERSON RD CSO LDN

Dietitian, Registered (Nutrition, Oncology)

4305 W MEDICAL CENTER DR
MCHENRY, IL 60050

McHenry County (815) 344-8000

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 Rena Zimmerman's NPI number?

The NPI number for Rena Zimmerman is 1851350318. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Where is Rena Zimmerman located?

Rena Zimmerman practices at 4305 W Medical Center Dr, Mchenry, IL 60050. The listed phone number is (815) 344-8000.

What is Rena Zimmerman's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Rena Zimmerman enrolled in Medicare?

Yes. Rena Zimmerman 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 Rena Zimmerman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rena Zimmerman reassigns Medicare benefits to 5 organizations: Promedica Central Physicians (Toledo, OH), The Metrohealth System (Cleveland, OH), Genesis Medical Group LLC (Zanesville, OH), Somc Medical Care Foundation, Inc. (Portsmouth, OH) and Faith Regional Health Services (Norfolk, NE). 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 Rena Zimmerman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rena Zimmerman accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Nebraska, CareSource, Molina Healthcare and Oscar Insurance Company and 1 other insurer list Rena Zimmerman as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Rena Zimmerman affiliated with any hospitals?

According to CMS data, Rena Zimmerman is affiliated with Bryan Medical Center, Faith Regional Health Services and Genesis Hospital.

When was this NPI record last updated?

The NPPES record for Rena Zimmerman was last updated on September 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.