Active NPI
Erik Gunnar Bergersen, M.D.
- Anesthesiology Physician
- Milwaukee, WI
National Provider Identifier
1649666751
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Anesthesiology Physician
- License
- 73077
- Practice address
- 2900 W Oklahoma Ave
Milwaukee, WI 53215-4330 - Phone
- (414) 649-6000
- NPI assigned
- Apr 15, 2015
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Anesthesiology Physician | 207L00000X | 73077 | WI | Primary |
Addresses
Primary practice location
2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Mailing address
PO Box 735044
Chicago, IL 60673-5044
Phone (800) 326-2250
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 100101555 | Medicaid | WI |
Electronic endpoints 2
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | ebergersen278628@direct.myadvocateaurora.org | Direct | |
| FHIR URL | https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/ |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in WI
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Anesthesiology
- Education
- University of Chicago, Pritzker School of Medicine, 2014
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Phone (414) 646-5410
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 35.135014 | OH | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Aurora Medical Group, Inc. | Internal Medicine | Current | Accepting new patients |
| Aurora Medical Group, Inc. | Current | Accepting new patients |
Locations
2900 W Oklahoma Ave
Milwaukee, WI 53215
Phone (414) 385-2590
3301 W Forest Home Ave
Milwaukee, WI 53215
Phone (414) 389-2233
1020 N 12th St
Milwaukee, WI 53233
Phone (414) 219-3056
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Certified Registered Nurse Anesthetist
- Milwaukee, WI
- NPI 1427271378
Internal Medicine
-
- Durable Medical Equipment & Medical Supplies
- Oshkosh, WI
- NPI 1326858044
Hospital & facility affiliations 4
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Mental Health Clinic/Center (Including Community Mental Health Center)
- Cudahy, WI
- NPI 1235355983
Hospital
-
- General Acute Care Hospital
- Milwaukee, WI
- NPI 1861447179
-
- General Acute Care Hospital
- West Allis, WI
- NPI 1407801640
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1429056000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1784246400000",
"number": "1649666751",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 735044",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606735044",
"telephone_number": "800-326-2250"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2900 W OKLAHOMA AVE",
"city": "MILWAUKEE",
"state": "WI",
"postal_code": "532154330",
"telephone_number": "414-649-6000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BERGERSEN",
"first_name": "ERIK",
"middle_name": "GUNNAR",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2015-04-15",
"last_updated": "2026-07-17",
"certification_date": "2026-07-17",
"status": "A"
},
"taxonomies": [
{
"code": "207L00000X",
"taxonomy_group": "",
"desc": "Anesthesiology",
"state": "WI",
"license": "73077",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "100101555",
"state": "WI"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "ebergersen278628@direct.myadvocateaurora.org",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "2900 W Oklahoma Ave",
"city": "Milwaukee",
"state": "WI",
"country_code": "US",
"postal_code": "532154330",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "FHIR",
"endpointTypeDescription": "FHIR URL",
"endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
"affiliation": "N",
"address_1": "2900 W Oklahoma Ave",
"city": "Milwaukee",
"state": "WI",
"country_code": "US",
"postal_code": "532154330",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}Other providers in Milwaukee, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 17, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.