DR. CHRISTOPHER K NUSSBAUM MD
NPI 1174639603
Emergency Medicine in Milwaukee, WI
About Dr. Christopher K Nussbaum Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTOPHER K NUSSBAUM MD (NPI 1174639603) is an individual emergency medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (52871-020) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Bay Area Medical Center, and is a graduate of Medical College Of Wisconsin (2006).
NPPES Registry Identity
Specialties & Licenses 2
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 K Nussbaum 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.
Medicare Billing Reassignments
2Medicare enrollment records show Christopher Nussbaum reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53215
- Reassigned Medicare billing, Wisconsin enrollment
- 49 clinicians in this Medicare group
Milwaukee, WI 53215
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bay Area Medical Center
Acute Care Hospitals · Marinette, WIAurora St Lukes Medical Center
Acute Care Hospitals · Milwaukee, WIWest Allis Memorial Hospital
Acute Care Hospitals · West Allis, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53215 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Nussbaum's NPI number?
The NPI number for Christopher Nussbaum is 1174639603. It was assigned to this individual provider in the NPPES registry on August 21, 2006.
Where is Christopher Nussbaum located?
Christopher Nussbaum practices at 2900 W Oklahoma Ave, Milwaukee, WI 53215. The listed phone number is (414) 649-7299.
What is Christopher Nussbaum's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Christopher Nussbaum enrolled in Medicare?
Yes. Christopher Nussbaum 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 Nussbaum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Nussbaum reassigns Medicare benefits to 2 organizations: Ermed, Sc (Milwaukee, WI) and Aurora Medical Group, Inc. (Milwaukee, 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 Nussbaum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christopher Nussbaum accept?
Health plans from CareSource (Common Ground Healthcare) list Christopher Nussbaum 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 Nussbaum affiliated with any hospitals?
According to CMS data, Christopher Nussbaum is affiliated with Bay Area Medical Center, Aurora St Lukes Medical Center and West Allis Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Christopher Nussbaum was last updated on June 23, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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 K Nussbaum, MD · NPI 1174639603
Emergency Medicine physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since August 21, 2006.
## Identity
- **NPI:** 1174639603 (Entity type: Individual)
- **Enumerated:** August 21, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 52871-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2900 W OKLAHOMA AVE, Milwaukee, WI 53215-4330
- **Phone:** (414) 649-7299 · **Fax:** (414) 649-6694
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Ermed, Sc (NPI 1023076296, Milwaukee, WI); Aurora Medical Group, Inc. (NPI 1427271378, Milwaukee, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 2006
## Record status
- **NPPES last updated:** June 23, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1174639603) · Data from the CMS NPPES public registry.