JOHN ERIK WINTERHOLLER MD
NPI 1912536640
Radiology - Diagnostic Radiology in Madison, WI

Q: What is John Winterholler's NPI number?

The NPI number for John Winterholler is 1912536640. It was assigned to this individual provider in the NPPES registry on April 4, 2020.

Q: What is John Winterholler's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for John Winterholler was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 April 04, 2020PECOS EnrolledAccepts Medicare Assignment

600 HIGHLAND AVE, MADISON, WI 53792(608) 263-0572 Get Directions Write a Review

NPPES record last updated: June 2, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jun 2, 2026, May 15, 2026, Sep 5, 2025 and 3 more (6 updates tracked since 2020).

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About John Erik Winterholler Md NPPES

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

JOHN ERIK WINTERHOLLER MD (NPI 1912536640) is an individual diagnostic radiology provider in Madison, Wisconsin, licensed in Utah (14287656-1205) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Mercy Health System Corp, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1912536640

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameJOHN ERIK WINTERHOLLERCredential: MD

Location Address600 HIGHLAND AVEMadison, WI 53792-0001

Mailing Address600 Highland AveMadison, WI 53792-0001

Phone(608) 263-0572

Sole ProprietorNo

Medical School CMSOtherGraduated 2020

Enumeration DateApril 4, 2020

Last NPPES UpdateJune 2, 20266 updates tracked since enumeration

NPPES CertifiedJune 2, 2026

✔ NPI 1912536640 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in UT · 14287656-1205✔ Licensed in WI · 77763

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Also ListedRadiology · Vascular & Interventional RadiologyTaxonomy 2085R0204X · License 77763 (WI)

600 HIGHLAND AVE, Madison, WI 53792

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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

John Erik Winterholler Md 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 ID9537585393

PECOS Enrollment IDI20241031000448

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 2

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.

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

41 services38 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

20 services20 patients

Hospital Affiliations CMS Care Compare 4

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

Mercy Health System Corp

Acute Care Hospitals · Janesville, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520066

Location1000 Mineral Point AveJanesville, WI 53548 · Rock County

Emergency services Birthing friendly

Fort Memorial Hospital

Acute Care Hospitals · Fort Atkinson, WI

OwnershipVoluntary non-profit - Private

CMS Certification Number520071

Location611 Sherman Ave EFort Atkinson, WI 53538 · Jefferson County

Emergency services Birthing friendly

Unitypoint Health - Meriter

Acute Care Hospitals · Madison, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520089

Location202 S Park StMadison, WI 53715 · Dane County

Emergency services Birthing friendly

University Of Wi Hospitals & Clinics Authority

Acute Care Hospitals · Madison, WI

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number520098

Location600 Highland AvenueMadison, WI 53792 · Dane County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53792 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

$82.92 typical visit price

range $53.90 – $163.24

Typical copayment $20.73 (range $13.47 – $40.81)

Most-billed visit code 99203

Established Patient

$67.37 typical visit price

range $17.40 – $133.76

Typical copayment $16.84 (range $4.35 – $33.44)

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.

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.

JASON ALAN CHRISTENSEN PHARMD

Pharmacist

600 HIGHLAND AVE, COMPLIANCE MAIL CODE 2433
MADISON, WI 53792

Dane County (608) 662-0817

LAURA JEAN KOPPLIN MD, PHD

Ophthalmology