NPIMap

Individual provider Active NPI

Zachary E. Pflum, M.D.

  • Otolaryngology Physician
  • Greenfield, WI
National Provider Identifier
1225416662
Registry record updated Jun 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Otolaryngology PhysicianTaxonomy code 207Y00000X
License
73408-20 Issued in WI
Practice address
4600 W Loomis Rd
Greenfield, WI 53220-4858
Phone
(414) 218-4466
NPI assigned
May 18, 2015
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 11, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Otolaryngology Physician 207Y00000X 73408-20 WI Primary

Addresses

Primary practice location

4600 W Loomis Rd
Greenfield, WI 53220-4858

Mailing address

PO Box 735044
Chicago, IL 60673-5044
Phone (800) 326-2250

Other practice location 1

1221 Dotty Dr
Little Chute, WI 54140-2366
Phone (920) 213-5981

Other identifiers 1

IdentifierTypeStateIssuer
100100061MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/
Direct Messaging Address zpflum313504@direct.myadvocateaurora.org Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20200624000236 WI Practitioner - Otolaryngology 3274844626 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Otolaryngology
Education
University of Wisconsin School of Medicine, 2015
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)

4600 W Loomis Rd
Suite 201
Greenfield, WI 53220-4858
Phone (414) 281-4615

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion1-10
Upper gastrointestinal (GI) endoscopy for acid reflux1-10
Melanoma (skin cancer) excision14
Removal of tissue1-10
Removal of skin lesions1-10
Removal or shaving of skin growth1-10
Skin biopsy1-10

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Medical Group, Inc. CurrentSince Sep 27, 2021 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Sep 27, 2021 Accepting new patients
Aurora Medical Group, Inc. Past Accepting new patients
Aurora Medical Group, Inc. Past Accepting new patients

Locations

4600 W Loomis Rd
Ste 201
Milwaukee, WI 53220

3301 W Forest Home Ave
Milwaukee, WI 53215
Phone (414) 389-2233

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

2801 W Kinnickinnic River Pkwy
Ste 560
Milwaukee, WI 53215
Phone (414) 649-3920

Organizations & group practices 4

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.

Hospital & facility affiliations 8

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": "1431907200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781136000000",
    "number": "1225416662",
    "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": "4600 W LOOMIS RD",
            "city": "GREENFIELD",
            "state": "WI",
            "postal_code": "532204858",
            "telephone_number": "414-218-4466"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1221 Dotty Dr",
            "address_purpose": "LOCATION",
            "city": "Little Chute",
            "state": "WI",
            "postal_code": "541402366",
            "country_code": "US",
            "telephone_number": "920-213-5981",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PFLUM",
        "first_name": "ZACHARY",
        "middle_name": "E.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-05-18",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "WI",
            "license": "73408-20",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100100061",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "4600 W Loomis Rd",
            "city": "Greenfield",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532204858",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "zpflum313504@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "4600 W Loomis Rd",
            "city": "Greenfield",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532204858",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Greenfield, WI

Sources for this page

Verify at the official NPI Registry.