Individual provider Active NPI

Jason S Duelge, MD

  • Radiation Oncology Physician
  • Marshfield, WI
National Provider Identifier
1326032509
Registry record updated Jan 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiation Oncology PhysicianTaxonomy code 2085R0001X
License
42634-020 Issued in WI
Practice address
1000 N Oak Ave
Marshfield, WI 54449-5702
Phone
(715) 387-5511
NPI assigned
Sep 2, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 6, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Radiation Oncology Physician 2085R0001X 42634-020 WI Primary
Radiation Oncology Physician 2085R0001X 4301093795 MI

Addresses

Primary practice location

1000 N Oak Ave
Marshfield, WI 54449-5702

Mailing address

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone (715) 387-5511

Other practice location 1

1721 S Stephenson Ave
Iron Mountain, MI 49801-3637
Phone (906) 774-1313

Other practice location 2

1104 John Nolen Dr
Madison, WI 53713
Phone (608) 251-6868

Other practice location 3

1969 W Hart Rd
Beloit, WI 53511-2230
Phone (608) 364-5253

Other practice location 4

1700 W Stout St
Rice Lake, WI 54868-5000
Phone (715) 236-8308

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address him@marshfieldclinichealthsystem.cernerdirect.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI, WI2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20101104001119 MI Practitioner - Radiation Oncology 2769676667 Reassigns benefits to 2 organizations
I20141108000172 WI Practitioner - Radiation Oncology 2769676667 Reassigns benefits to 11 organizations

Care Compare profile

Medicare Care Compare
Specialty
Radiation Oncology
Education
Medical College of Wisconsin, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
MCHS Hospitals IncGroup PAC ID 5698071173, shared by 28 NPIs, 1,195 clinicians

Practice addresses (Care Compare)

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone (715) 387-5511

1700 W Stout St
Rice Lake, WI 54868-5000
Phone (715) 236-6133

1721 S Stephenson Ave
Iron Mountain, MI 49801-3637
Phone (906) 774-1313

2310 Craig Rd
Eau Claire, WI 54701-6128
Phone (715) 858-8100

3400 Ministry Pkwy
Weston, WI 54476-5220
Phone (715) 393-1000

4100 State Hwy 66
Stevens Point, WI 54482-8410
Phone (715) 997-6000

9576 Hwy 70
Minocqua, WI 54548-9067
Phone (715) 358-1710

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
42634-020WIMDRadiation Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Beaver Dam Community Hospitals Inc CurrentSince Sep 18, 2023 Accepting new patients
Flambeau Hospital Inc CurrentSince Sep 18, 2023 Accepting new patients
MCHS Hospitals Inc Current Accepting new patients
Dickinson County Healthcare System CurrentSince May 1, 2020 Accepting new patients
Marshfield Clinic Inc CurrentSince Sep 18, 2023 Accepting new patients
MCHS Hospitals Inc Current Accepting new patients
Lakeview Medical Center Inc of Rice Lake CurrentSince Sep 18, 2023 Accepting new patients
DLP Marquette Physician Practices Inc CurrentSince Oct 11, 2021 Accepting new patients
Beaver Dam Community Hospitals Inc CurrentSince Sep 18, 2023 Accepting new patients
Memorial Hospital Inc CurrentSince Sep 18, 2023 Accepting new patients
The Medical College of Wisconsin, Inc. CurrentSince Jan 1, 2014 Accepting new patients
MCHS Hospitals Inc CurrentSince Sep 18, 2023 Accepting new patients
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. CurrentSince Apr 22, 2020 Accepting new patients
Flambeau Hospital Inc CurrentSince Sep 18, 2023 Accepting new patients
MCHS Hospitals Inc CurrentSince Sep 18, 2023 Accepting new patients
DLP Marquette Physician Practices Inc CurrentSince Oct 11, 2021 Accepting new patients
Lakeview Medical Center Inc of Rice Lake CurrentSince Sep 18, 2023 Accepting new patients
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. Radiation Oncology CurrentSince Apr 22, 2020 Accepting new patients
Holy Family Memorial Inc Past Accepting new patients
Memorial Hospital Inc Past Accepting new patients

Locations

29980 Network Pl
Chicago, IL 60673

1721 S Stephenson Ave
Iron Mountain, MI 49801
Phone (906) 776-5415

1414 W Fair Ave
Ste 36
Marquette, MI 49855
Phone (906) 225-3864

850 W Baraga Ave
Ste 10
Marquette, MI 49855
Phone (906) 449-3894

510 Ashmun St
Ste 5
Sault South Marie, MI 49783
Phone (906) 632-6013

705 S University Ave
Beaver Dam, WI 53916
Phone (920) 885-6090

3501 Golf Rd
Eau Claire, WI 54701
Phone (715) 858-4200

2200 Craig Rd
Eau Claire, WI 54701
Phone (715) 858-4610

900 W Clairemont Ave
Eau Claire, WI 54701
Phone (715) 717-4121

1000 Starr Ave
Eau Claire, WI 54703
Phone (715) 858-4850

1010 Olive Ave
Florence, WI 54121
Phone (715) 528-4775

2300 Western Ave
Manitowoc, WI 54220
Phone (920) 320-2011

1000 N Oak Ave
Marshfield, WI 54449
Phone (715) 387-5111

1102 S Center Ave
Merrill, WI 54452
Phone (715) 536-3399

9576 State Highway 70
Minocqua, WI 54548
Phone (715) 358-1000

N3708 River Ave
Neillsville, WI 54456
Phone (715) 743-3101

2251 N Shore Dr
Ste 100
Rhinelander, WI 54501
Phone (715) 361-2074

1700 W Stout St
Rice Lake, WI 54868
Phone (715) 236-6133

4100 State Highway 66
Stevens Point, WI 54482
Phone (715) 343-7700

1821 N 4th Ave
Wausau, WI 54401
Phone (715) 675-9451

9000 W Wisconsin Ave
Wauwatosa, WI 53226
Phone (414) 266-2625

8701 Watertown Plank Rd
Wauwatosa, WI 53226
Phone (414) 456-4100

3400 Ministry Pkwy
Weston, WI 54476
Phone (715) 393-1000

Interoperability endpoints

  • Direct secure messaging: him@marshfieldclinichealthsystem.cernerdirect.com

Organizations & group practices 20

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 20

Hospital & facility affiliations 5

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": "1125619200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767657600000",
    "number": "1326032509",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1000 N OAK AVE",
            "city": "MARSHFIELD",
            "state": "WI",
            "postal_code": "544495703",
            "telephone_number": "715-387-5511"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 N OAK AVE",
            "city": "MARSHFIELD",
            "state": "WI",
            "postal_code": "544495702",
            "telephone_number": "715-387-5511"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1721 S Stephenson Ave",
            "address_purpose": "LOCATION",
            "city": "Iron Mountain",
            "state": "MI",
            "postal_code": "498013637",
            "country_code": "US",
            "telephone_number": "906-774-1313",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1104 John Nolen Dr",
            "address_purpose": "LOCATION",
            "city": "Madison",
            "state": "WI",
            "postal_code": "53713",
            "country_code": "US",
            "telephone_number": "608-251-6868",
            "fax_number": "608-251-4255",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1969 W Hart Rd",
            "address_purpose": "LOCATION",
            "city": "Beloit",
            "state": "WI",
            "postal_code": "535112230",
            "country_code": "US",
            "telephone_number": "608-364-5253",
            "fax_number": "608-364-5304",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1700 W Stout St",
            "address_purpose": "LOCATION",
            "city": "Rice Lake",
            "state": "WI",
            "postal_code": "548685000",
            "country_code": "US",
            "telephone_number": "715-236-8308",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DUELGE",
        "first_name": "JASON",
        "middle_name": "S",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-02",
        "last_updated": "2026-01-06",
        "certification_date": "2026-01-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "WI",
            "license": "42634-020",
            "primary": true
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "MI",
            "license": "4301093795",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "him@marshfieldclinichealthsystem.cernerdirect.com",
            "affiliation": "N",
            "address_1": "1000 N Oak Ave",
            "city": "Marshfield",
            "state": "WI",
            "country_code": "US",
            "postal_code": "544495702",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Marshfield, WI

Sources for this page

Verify at the official NPI Registry.