CHRISTOPHER M. KOENIG DO
NPI 1104205467
Emergency Medicine in Janesville, WI

Q: What is Christopher Koenig's NPI number?

The NPI number for Christopher Koenig is 1104205467. It was assigned to this individual provider in the NPPES registry on May 20, 2015.

Q: What is Christopher Koenig's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Active since May 20, 2015PECOS EnrolledAccepts Medicare Assignment

1000 MINERAL POINT AVE, JANESVILLE, WI 53548(608) 756-6611(608) 756-6177 Get Directions Write a Review

NPPES record last updated: May 2, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 2, 2024, Jun 17, 2019 (2 updates tracked since 2019).

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About Christopher M. Koenig Do NPPES

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

CHRISTOPHER M. KOENIG DO (NPI 1104205467) is an individual emergency medicine provider in Janesville, Wisconsin, licensed in Wisconsin (71164-21) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS, is affiliated with Mercy Health System Corp, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1104205467

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameCHRISTOPHER M. KOENIGCredential: DO

Location Address1000 MINERAL POINT AVEJanesville, WI 53548-2940

Mailing Address1000 Mineral Point AveJanesville, WI 53548-2940 · (608) 756-6611 · Fax (608) 756-6177

Phone(608) 756-6611

Fax(608) 756-6177

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateMay 20, 2015

Last NPPES UpdateMay 2, 20242 updates tracked since enumeration

NPPES CertifiedMay 2, 2024

✔ NPI 1104205467 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

Licenses✔ Licensed in WI · 71164-21✔ Licensed in MI · 5101021598

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

1000 MINERAL POINT AVE, Janesville, WI 53548

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Secondary Practice Locations 2

Location 11 Genesys PkwyGrand Blanc, MI 48439-8065 · Phone (810) 606-5980

Location 2N2950 State Road 67Lake Geneva, WI 53147-2655 · Phone (262) 245-0535

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

Christopher M. Koenig Do 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 ID5092000265

PECOS Enrollment IDI20190725000156, I20250116003587

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 Christopher Koenig reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Health System Corporation

Same address

General Acute Care Hospital

1000 MINERAL POINT AVE
Janesville, WI 53548

Reassigned Medicare billing, Wisconsin and Illinois enrollments
Also billed through NPI 1598718603 (Illinois), NPI 1699728550 (Wisconsin)
1,155 clinicians in this Medicare group

NPI 1093768962 (608) 756-6000

Rockford Health Physicians

26 mi

Multi-Specialty

8201 E RIVERSIDE BLVD
Rockford, IL 61114

Reassigned Medicare billing, Illinois enrollment
1,375 clinicians in this Medicare group

NPI 1043242886 (608) 314-2428

Mercy Harvard Hospital Inc

28 mi

Critical Access

901 GRANT ST
Harvard, IL 60033

Reassigned Medicare billing, Illinois enrollment
382 clinicians in this Medicare group

NPI 1427001445 (815) 943-5431

Emergency Medicine Associates Of Madison, Sc

32 mi

Emergency Medicine

202 S PARK ST
Madison, WI 53715

Reassigned Medicare billing, Wisconsin enrollment
20 clinicians in this Medicare group

NPI 1235119769 (608) 417-4300

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 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.

Emergency department visit with low level of medical decision making 99283

An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.

110 services92 patients

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

96 services91 patients

Emergency department visit with high level of medical decision making 99285

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

72 services69 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.

14 services14 patients

Hospital Affiliations CMS Care Compare 2

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

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53548 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

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

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.

BENJAMIN C. MILLER PMHNP

Nurse Practitioner (Psychiatric/Mental Health)

1000 MINERAL POINT AVE
JANESVILLE, WI 53548

Rock County (608) 756-6508

KARINA LAURA PAULIUS QUINN MD

Plastic Surgery

1000 MINERAL POINT AVE
JANESVILLE, WI 53548

Rock County (608) 756-6000

ALESIA L DRAKE DPT, PT

Physical Therapist

1000 MINERAL POINT AVE
JANESVILLE, WI 53548

Rock County (608) 756-6842

PAULINE R CASS PHARMD

Pharmacist

1000 MINERAL POINT AVE
JANESVILLE, WI 53548

Rock County (608) 756-6000

KAREN SAUNDERS OT

Occupational Therapist

1000 MINERAL POINT AVE
JANESVILLE, WI 53548

Rock County (608) 756-6000

DR. MERLE S RUST MD

Neurological Surgery

1000 MINERAL POINT AVE, MERCY WEST NEUROSURGERY
JANESVILLE, WI 53548

Rock County (608) 756-6826

DR. MICHAEL V COOGAN MD

Emergency Medicine (Medical Toxicology)

1000 MINERAL POINT AVE
JANESVILLE, WI 53548

Rock County (608) 756-6000

CHRISTOPHER B GOODAVISH PA

Physician Assistant

1000 MINERAL POINT AVE
JANESVILLE, WI 53548

Rock County (608) 756-6868

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 Christopher Koenig's NPI number?

The NPI number for Christopher Koenig is 1104205467. It was assigned to this individual provider in the NPPES registry on May 20, 2015.

Where is Christopher Koenig located?

Christopher Koenig practices at 1000 Mineral Point Ave, Janesville, WI 53548. The listed phone number is (608) 756-6611.

What is Christopher Koenig's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Christopher Koenig enrolled in Medicare?

Yes. Christopher Koenig 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 Christopher Koenig's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Koenig reassigns Medicare benefits to 4 organizations: Mercy Health System Corporation (Janesville, WI), Rockford Health Physicians (Rockford, IL), Mercy Harvard Hospital Inc (Harvard, IL) and Emergency Medicine Associates Of Madison, Sc (Madison, WI). 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 Christopher Koenig's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Christopher Koenig affiliated with any hospitals?

According to CMS data, Christopher Koenig is affiliated with Mercy Health System Corp and Unitypoint Health - Meriter.

When was this NPI record last updated?

The NPPES record for Christopher Koenig was last updated on May 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.