Individual provider Active NPI

Robert John Olson

  • Anesthesiology Physician
  • West Allis, WI
National Provider Identifier
1932785433
Registry record updated Sep 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
8499220 Issued in WI
Practice address
8901 W Lincoln Ave
West Allis, WI 53227-2409
Phone
(414) 328-6000
NPI assigned
Mar 23, 2021
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 17, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 8499220 WI Primary

Addresses

Primary practice location

8901 W Lincoln Ave
West Allis, WI 53227-2409

Mailing address

PO Box 735044
Chicago, IL 60673-5044
Phone (800) 325-2250

Other practice location 1

2424 S 90th St
West Allis, WI 53227-2455
Phone (414) 328-6000

Other identifiers 1

IdentifierTypeStateIssuer
100365833MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/
Direct Messaging Address rolson435754@direct.myadvocateaurora.org Direct

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
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250820001952 WI Practitioner - Anesthesiology 4880090927 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Other, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians

Practice addresses (Care Compare)

8901 W National Ave
West Allis, WI 53227-1637
Phone (414) 329-5655

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
8499220WIMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Medical Group, Inc. CurrentSince Sep 1, 2025 Accepting new patients
Aurora Medical Group, Inc. Current Accepting new patients
Aurora Medical Group, Inc. CurrentSince Sep 1, 2025 Accepting new patients

Locations

1020 N 12th St
Milwaukee, WI 53233
Phone (414) 219-3056

8901W National Ave
West Allis, WI 53227
Phone (414) 329-5655

8901W National Ave
West Allis, WI 53227

2424 S 90th St
West Allis, WI 53227
Phone (414) 321-2255

8901 W Lincoln Ave
West Allis, WI 53227
Phone (414) 328-6000

Organizations & group practices 3

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1616457600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758067200000",
    "number": "1932785433",
    "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": "800-325-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8901 W LINCOLN AVE",
            "city": "WEST ALLIS",
            "state": "WI",
            "postal_code": "532272409",
            "telephone_number": "414-328-6000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2424 S 90th St",
            "address_purpose": "LOCATION",
            "city": "West Allis",
            "state": "WI",
            "postal_code": "532272455",
            "country_code": "US",
            "telephone_number": "414-328-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OLSON",
        "first_name": "ROBERT",
        "middle_name": "JOHN",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-03-23",
        "last_updated": "2025-09-17",
        "certification_date": "2025-09-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "WI",
            "license": "8499220",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100365833",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "8901 W Lincoln Ave",
            "city": "West Allis",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532272409",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "rolson435754@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "8901 W Lincoln Ave",
            "city": "West Allis",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532272409",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in West Allis, WI

Sources for this page

Verify at the official NPI Registry.