DR. CHRISTOPHER KENDALL GERWING M.D.
NPI 1134328446
Emergency Medicine in Milwaukee, WI
About Dr. Christopher Kendall Gerwing M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTOPHER KENDALL GERWING M.D. (NPI 1134328446) is an individual emergency medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (54047-20) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, is affiliated with Bellin Memorial Hospital, and is a graduate of Medical College Of Wisconsin (2007).
NPPES Registry Identity
Specialties & Licenses
Accepted 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. Christopher Kendall Gerwing 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.
Medicare Billing Reassignment
Medicare enrollment records show Christopher Gerwing reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Green Bay, WI 54301
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Green Bay Emergency Medicine Services Sc
- 33 clinicians in this Medicare group
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bellin Memorial Hospital
Acute Care Hospitals · Green Bay, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53202 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
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 Gerwing's NPI number?
The NPI number for Christopher Gerwing is 1134328446. It was assigned to this individual provider in the NPPES registry on July 16, 2007.
Where is Christopher Gerwing located?
Christopher Gerwing practices at 111 E Wisconsin Ave Suite 2000, Milwaukee, WI 53202. The listed phone number is (414) 290-6720.
What is Christopher Gerwing's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Christopher Gerwing enrolled in Medicare?
Yes. Christopher Gerwing 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 organization bills Medicare for Christopher Gerwing's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Gerwing reassigns Medicare benefits to Green Bay Emergency Medicine Services S.C. (Green Bay, WI). The 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 Gerwing's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christopher Gerwing accept?
Health plans from CareSource (Common Ground Healthcare) list Christopher Gerwing 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 Christopher Gerwing affiliated with any hospitals?
According to CMS data, Christopher Gerwing is affiliated with Bellin Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Christopher Gerwing was last updated on December 16, 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.
# Dr. Christopher Kendall Gerwing, M.D. · NPI 1134328446
Emergency Medicine physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since July 16, 2007.
## Identity
- **NPI:** 1134328446 (Entity type: Individual)
- **Enumerated:** July 16, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 54047-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 E WISCONSIN AVE, SUITE 2000, Milwaukee, WI 53202-4815
- **Phone:** (414) 290-6720 · **Fax:** (414) 290-6755
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Green Bay Emergency Medicine Services S.C. (NPI 1366424111, Green Bay, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 2007
## Record status
- **NPPES last updated:** December 16, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1134328446) · Data from the CMS NPPES public registry.