Individual provider Active NPI

Zechariah David Spychalla, MD

  • Emergency Medicine Physician
  • Oshkosh, WI
National Provider Identifier
1578806790
Registry record updated May 19, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
65730 Issued in WI
Practice address
855 N Westhaven Dr
Oshkosh, WI 54904-7668
Phone
(920) 456-7400
Fax
(920) 456-7421
NPI assigned
Apr 6, 2013
Last updated
May 19, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 19, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Emergency Medicine Physician 207P00000X 65730 WI Primary

Addresses

Primary practice location

855 N Westhaven Dr
Oshkosh, WI 54904-7668

Mailing address

1035 Kepler Dr
Green Bay, WI 54311-8320
Phone (920) 490-9046

Other identifiers 1

IdentifierTypeStateIssuer
100057053MedicaidWI

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
I20160706001693 WI Practitioner - Emergency Medicine 4587968094 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Baycare Aurora LLCGroup PAC ID 0244130557, 197 clinicians
Baycare Clinic LLPGroup PAC ID 4385554328, 197 clinicians
Aurora Health Care North IncGroup PAC ID 9436067402, 19 clinicians
Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians

Practice addresses (Care Compare)

2845 Greenbrier Rd
Green Bay, WI 54311-6519
Phone (920) 288-8000

5000 Memorial Dr
Two Rivers, WI 54241-3900
Phone (920) 794-5000

855 N Westhaven Dr
Oshkosh, WI 54904-7668
Phone (920) 303-8700

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
65730WIMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Baycare Clinic LLP CurrentSince Aug 1, 2016 Accepting new patients
Baycare Aurora, LLC CurrentSince Aug 1, 2016 Accepting new patients
Aurora Medical Center of Oshkosh, Inc Emergency Medicine CurrentSince Aug 1, 2016 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Dec 27, 2023 Accepting new patients
Aurora Medical Group, Inc. Current Accepting new patients
Aurora Health Care North, Inc. CurrentSince Aug 1, 2016 Accepting new patients
Baycare Clinic LLP Emergency Medicine CurrentSince Aug 1, 2016 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Dec 27, 2023 Accepting new patients

Locations

1035 Kepler Dr
Green Bay, WI 54311

164 N Broadway
Green Bay, WI 54303
Phone (920) 965-4055

2253 W Mason St
Green Bay, WI 54303
Phone (920) 327-7000

2581 Development Dr
Green Bay, WI 54311
Phone (920) 347-0400

2845 Greenbrier Rd
Green Bay, WI 54311
Phone (920) 288-3388

2845 Greenbrier Rd
Ste 220
Green Bay, WI 54311
Phone (920) 288-8230

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

719 Doctors Ct
Oshkosh, WI 54901
Phone (920) 235-0066

855 N Westhaven Dr
Oshkosh, WI 54904
Phone (920) 451-5643

5000 Memorial Dr
Two Rivers, WI 54241
Phone (920) 794-5000

Interoperability endpoints

  • Direct secure messaging: zspychalla41320@direct.myadvocateaurora.org

Organizations & group practices 8

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 3

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": "1365206400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779148800000",
    "number": "1578806790",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1035 KEPLER DR",
            "city": "GREEN BAY",
            "state": "WI",
            "postal_code": "543118320",
            "telephone_number": "920-490-9046",
            "fax_number": "920-405-8005"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "855 N WESTHAVEN DR",
            "city": "OSHKOSH",
            "state": "WI",
            "postal_code": "549047668",
            "telephone_number": "920-456-7400",
            "fax_number": "920-456-7421"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SPYCHALLA",
        "first_name": "ZECHARIAH",
        "middle_name": "DAVID",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-04-06",
        "last_updated": "2026-05-19",
        "certification_date": "2026-05-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WI",
            "license": "65730",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100057053",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Oshkosh, WI

Sources for this page

Verify at the official NPI Registry.