DR. RONALD ANTHONY ZIMMERMANN D.O.
NPI 1346404985
Hospitalist in Naperville, IL

Q: What is Ronald Zimmermann's NPI number?

The NPI number for Ronald Zimmermann is 1346404985. It was assigned to this individual provider in the NPPES registry on July 14, 2008.

Q: What is Ronald Zimmermann's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Ronald Zimmermann was last updated on December 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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 July 14, 2008PECOS EnrolledAccepts Medicare Assignment

801 S WASHINGTON ST, NAPERVILLE, IL 60540(630) 646-8704 Get Directions Write a Review

NPPES record last updated: December 10, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 10, 2021, Mar 22, 2021, Oct 24, 2020 (3 updates tracked since 2020).

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About Dr. Ronald Anthony Zimmermann D.o. NPPES

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

DR. RONALD ANTHONY ZIMMERMANN D.O. (NPI 1346404985) is an individual hospitalist provider in Naperville, Illinois, licensed in Illinois (036.128777) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Osf Sacred Heart Medical Center, and is a graduate of Lake Erie College Of Osteopathic Medicine, Erie (2008).

NPPES Registry Identity

NPI1346404985

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameDR. RONALD ANTHONY ZIMMERMANNCredential: D.O.

Location Address801 S WASHINGTON STNaperville, IL 60540-7430

Mailing Address1319 Wingfield WayBolingbrook, IL 60490-4529 · (630) 863-7026

Phone(630) 646-8704

Sole ProprietorNo

Medical School CMSLake Erie College Of Osteopathic Medicine, ErieGraduated 2008

Enumeration DateJuly 14, 2008

Last NPPES UpdateDecember 10, 20213 updates tracked since enumeration

NPPES CertifiedDecember 10, 2021

✔ NPI 1346404985 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in IL · 036.128777

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License 125054800 (IL), 036128777 (IL)

801 S WASHINGTON ST, Naperville, IL 60540

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ronald Anthony Zimmermann D.o. 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 ID5991976300

PECOS Enrollment IDI20110915000247

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.

Areas of Expertise CMS Part B claims 4

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

572 services535 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

89 services41 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

43 services41 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

26 services26 patients

Hospital Affiliations CMS Care Compare 4

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

Osf Sacred Heart Medical Center

Acute Care Hospitals · Danville, IL

1/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140093

Location812 N Logan AveDanville, IL 61832 · Vermilion County

Emergency services Birthing friendly

Swedish Hospital

Acute Care Hospitals · Chicago, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140114

Location5145 N California AveChicago, IL 60625 · Cook County

Emergency services Birthing friendly

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL

4/5 CMS rating

OwnershipProprietary

CMS Certification Number140200

Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County

Emergency services Birthing friendly

Edward Hospital

Acute Care Hospitals · Naperville, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140231

Location801 South WashingtonNaperville, IL 60540 · Du Page County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60540 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

$137.43 typical visit price

range $59.81 – $181.38

Typical copayment $34.35 (range $14.95 – $45.34)

Most-billed visit code 99204

Established Patient

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

DR. HAFEZ M. SAMI M.D.

Pain Medicine (Interventional Pain Medicine)

801 S WASHINGTON ST
NAPERVILLE, IL 60540

Dupage County (630) 348-3300

MICHAEL J. HARTMANN MD

Emergency Medicine

801 S WASHINGTON ST
NAPERVILLE, IL 60540

Dupage County (630) 527-3000

SEEMA ISHAQ JEELANI D.O.

Emergency Medicine

801 S WASHINGTON ST
NAPERVILLE, IL 60540

Dupage County (630) 527-3000

CORTNEY COLE MD

Family Medicine (Hospice and Palliative Medicine)

801 S WASHINGTON ST
NAPERVILLE, IL 60540

Dupage County (630) 527-3000

EDWARD HOSPITAL

General Acute Care Hospital

801 S WASHINGTON ST
NAPERVILLE, IL 60540

Dupage County (630) 655-0450

DR. HODA A. EL- ASMAR MD

Internal Medicine (Infectious Disease)

801 S WASHINGTON ST, EDWARD HOSPITAL, ADMINISTRATION, VPMA OFFICE
NAPERVILLE, IL 60540

Dupage County (630) 527-5647

AMAAR MASOOD MALIK DO

Radiology (Diagnostic Radiology)

801 S WASHINGTON ST
NAPERVILLE, IL 60540

Dupage County (630) 527-3200

DR. SANGITA RANGALA M.D.

Emergency Medicine

801 S WASHINGTON ST
NAPERVILLE, IL 60540

Dupage County (630) 527-3288

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 Ronald Zimmermann's NPI number?

The NPI number for Ronald Zimmermann is 1346404985. It was assigned to this individual provider in the NPPES registry on July 14, 2008.

Where is Ronald Zimmermann located?

Ronald Zimmermann practices at 801 S Washington St, Naperville, IL 60540. The listed phone number is (630) 646-8704.

What is Ronald Zimmermann's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Ronald Zimmermann enrolled in Medicare?

Yes. Ronald Zimmermann 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.

Is Ronald Zimmermann affiliated with any hospitals?

According to CMS data, Ronald Zimmermann is affiliated with Osf Sacred Heart Medical Center, Swedish Hospital, Elmhurst Memorial Hospital and Edward Hospital.

When was this NPI record last updated?

The NPPES record for Ronald Zimmermann was last updated on December 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.