DR. ERIK GUNNAR BERGERSEN M.D.
NPI 1649666751
Anesthesiology in Milwaukee, WI
About Dr. Erik Gunnar Bergersen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ERIK GUNNAR BERGERSEN M.D. (NPI 1649666751) is an individual anesthesiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (73077) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Aurora St Lukes Medical Center, and is a graduate of University Of Chicago, Pritzker School Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Erik Gunnar Bergersen 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 Erik Bergersen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
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 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Aurora St Lukes Medical Center
Acute Care Hospitals · Milwaukee, WIOther 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 Erik Bergersen's NPI number?
The NPI number for Erik Bergersen is 1649666751. It was assigned to this individual provider in the NPPES registry on April 15, 2015.
Where is Erik Bergersen located?
Erik Bergersen practices at 2900 W Oklahoma Ave, Milwaukee, WI 53215. The listed phone number is (414) 649-6000.
What is Erik Bergersen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Erik Bergersen enrolled in Medicare?
Yes. Erik Bergersen 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 Erik Bergersen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Erik Bergersen reassigns Medicare benefits to Aurora Medical Group, Inc. (Milwaukee, 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 Erik Bergersen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Erik Bergersen accept?
Health plans from CareSource (Common Ground Healthcare) list Erik Bergersen 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 Erik Bergersen affiliated with any hospitals?
According to CMS data, Erik Bergersen is affiliated with Aurora St Lukes Medical Center.
When was this NPI record last updated?
The NPPES record for Erik Bergersen was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Erik Gunnar Bergersen, M.D. · NPI 1649666751
Anesthesiology physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since April 15, 2015.
## Identity
- **NPI:** 1649666751 (Entity type: Individual)
- **Enumerated:** April 15, 2015
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 73077 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2900 W OKLAHOMA AVE, Milwaukee, WI 53215-4330
- **Phone:** (414) 649-6000
## 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:** Aurora Medical Group, Inc. (NPI 1427271378, Milwaukee, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Chicago, Pritzker School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** July 17, 2026
- **Other identifiers:** Medicaid 100101555 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1649666751) · Data from the CMS NPPES public registry.