NPIMap

Individual provider Active NPI

Isaac A Troiano, DO

  • Emergency Medicine Physician
  • Waupaca, WI
National Provider Identifier
1437506268
Registry record updated Dec 3, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
75133-21 Issued in WI
Practice address
800 Riverside Dr
Waupaca, WI 54981-1943
Phone
(715) 258-1041
Fax
(715) 258-1042
NPI assigned
May 23, 2016
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 3, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 75133-21 WI Primary

Addresses

Primary practice location

800 Riverside Dr
Waupaca, WI 54981-1943

Mailing address

3 Neenah Ctr
Neenah, WI 54956-3070
Phone (920) 830-5900

Other practice location 1

1726 Shawano Ave
Green Bay, WI 54303-3216
Phone (920) 498-4200

Other practice location 2

835 S Van Buren St
Green Bay, WI 54301-3526
Phone (920) 433-0111

Other identifiers 2

IdentifierTypeStateIssuer
64693OtherCTPHYSICIAN LICENSE
CSP.0072943OtherCTCONTROLLED SUBSTANCE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI, WI2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20190122001668 MI Practitioner - Emergency Medicine 8426342833 Reassigns benefits to 1 organization
I20210624003240 WI Practitioner - Emergency Medicine 8426342833 Reassigns benefits to 6 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Kansas City University of Med & Biosciences, College of Osteo Med, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Vituity-Wisconsin Em SCGroup PAC ID 2466814538, 56 clinicians

Practice addresses (Care Compare)

835 S Van Buren St
Green Bay, WI 54301-3526
Phone (920) 433-0111

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
84.74 of 100Reported as group
Quality
73.23
Improvement activities
40
Cost
82.42

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Thedacare Medical Center - Berlin, Inc. CurrentSince Dec 20, 2025 Accepting new patients
Thedacare Regional Medical Center - Appleton, Inc. CurrentSince Dec 20, 2025 Accepting new patients
St Clare Memorial Hospital, Inc CurrentSince Nov 1, 2022 Accepting new patients
Thedacare Regional Medical Center - Appleton Inc. CurrentSince Dec 20, 2025 Accepting new patients
Vituity-Wisconsin Em SC Emergency Medicine CurrentSince Feb 2, 2024 Accepting new patients
Thedacare Medical Center - Waupaca, Inc. Emergency Medicine CurrentSince Dec 20, 2025 Accepting new patients
Thedacare Medical Center - Shawano, Inc. CurrentSince Dec 20, 2025 Accepting new patients
Thedacare Medical Center - New London, Inc. CurrentSince Dec 20, 2025 Accepting new patients
Vituity-Wisconsin Em SC Emergency Medicine Current Accepting new patients
Thedacare Medical Center - Berlin, Inc. CurrentSince Dec 20, 2025 Accepting new patients
Richard S Veiga MD SC Current Accepting new patients
Thedacare Medical Center - New London, Inc CurrentSince Dec 20, 2025 Accepting new patients
Thedacare Medical Center - Waupaca, Inc. CurrentSince Dec 20, 2025 Accepting new patients
St. Clare Memorial Hospital, Inc CurrentSince Nov 1, 2022 Accepting new patients
Thedacare Medical Center - Shawano, Inc. CurrentSince Dec 20, 2025 Accepting new patients
Degara App, PLLC Emergency Medicine CurrentSince Nov 21, 2018 Accepting new patients

Locations

1601 Cummins Dr
Ste D
Modesto, CA 95358
Phone (510) 851-7423

401 W Greenlawn Ave
Lansing, MI 48910
Phone (517) 334-2286

50 N Perry St
Pontiac, MI 48342
Phone (248) 338-5300

1506 S Oneida St
Appleton, WI 54915
Phone (920) 730-4950

1818 N Meade St
Appleton, WI 54911
Phone (920) 731-4101

225 Memorial Dr
Berlin, WI 54923
Phone (920) 361-1313

614 Memorial Dr
Chilton, WI 53014
Phone (800) 458-4042

755 W Johnson St
Fond du Lac, WI 54935
Phone (920) 731-4101

1726 Shawano Ave
Green Bay, WI 54303
Phone (920) 432-6016

835 S Van Buren St
Green Bay, WI 54301
Phone (888) 901-7246

3 Neenah Ctr
Neenah, WI 54956
Phone (920) 454-4229

1405 Mill St
New London, WI 54961
Phone (920) 531-2000

855 S Main St
Ste 1
Oconto Falls, WI 54154
Phone (920) 846-8187

855 S Main St
Oconto Falls, WI 54154
Phone (920) 846-3444

500 S Oakwood Rd
Oshkosh, WI 54904
Phone (920) 223-0501

9555 76th St
Pleasant Prairie, WI 53158
Phone (262) 577-8000

100 Cty Road B
Shawano, WI 54166
Phone (715) 524-2161

3100 Superior Ave
Sheboygan, WI 53081
Phone (800) 472-6710

800 Riverside Dr
Waupaca, WI 54981
Phone (715) 258-1000

Interoperability endpoints

  • Direct secure messaging: isaac.troiano@xdr.hhchealthdirect.org

Organizations & group practices 16

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.

View all 16

Hospital & facility affiliations 9

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": "1463961600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764720000000",
    "number": "1437506268",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3 NEENAH CTR",
            "city": "NEENAH",
            "state": "WI",
            "postal_code": "549563070",
            "telephone_number": "920-830-5900",
            "fax_number": "920-830-5910"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 RIVERSIDE DR",
            "city": "WAUPACA",
            "state": "WI",
            "postal_code": "549811943",
            "telephone_number": "715-258-1041",
            "fax_number": "715-258-1042"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1726 Shawano Ave",
            "address_purpose": "LOCATION",
            "city": "Green Bay",
            "state": "WI",
            "postal_code": "543033216",
            "country_code": "US",
            "telephone_number": "920-498-4200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "835 S Van Buren St",
            "address_purpose": "LOCATION",
            "city": "Green Bay",
            "state": "WI",
            "postal_code": "543013526",
            "country_code": "US",
            "telephone_number": "920-433-0111",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TROIANO",
        "first_name": "ISAAC",
        "middle_name": "A",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-05-23",
        "last_updated": "2025-12-03",
        "certification_date": "2025-12-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WI",
            "license": "75133-21",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PHYSICIAN LICENSE",
            "identifier": "64693",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CONTROLLED SUBSTANCE",
            "identifier": "CSP.0072943",
            "state": "CT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Waupaca, WI

Sources for this page

Verify at the official NPI Registry.