Active NPI
Jason S Duelge, MD
- Radiation Oncology Physician
- Marshfield, WI
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Radiation Oncology Physician
- License
- 42634-020
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | him@marshfieldclinichealthsystem.cernerdirect.com |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MI, WI
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
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 Inc
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
| License | State | Type | Specialty |
|---|---|---|---|
| 42634-020 | WI | MD | Radiation Oncology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Beaver Dam Community Hospitals Inc | Current | Accepting new patients | |
| Flambeau Hospital Inc | Current | Accepting new patients | |
| MCHS Hospitals Inc | Current | Accepting new patients | |
| Dickinson County Healthcare System | Current | Accepting new patients | |
| Marshfield Clinic Inc | Current | Accepting new patients | |
| MCHS Hospitals Inc | Current | Accepting new patients | |
| Lakeview Medical Center Inc of Rice Lake | Current | Accepting new patients | |
| DLP Marquette Physician Practices Inc | Current | Accepting new patients | |
| Beaver Dam Community Hospitals Inc | Current | Accepting new patients | |
| Memorial Hospital Inc | Current | Accepting new patients | |
| The Medical College of Wisconsin, Inc. | Current | Accepting new patients | |
| MCHS Hospitals Inc | Current | Accepting new patients | |
| Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. | Current | Accepting new patients | |
| Flambeau Hospital Inc | Current | Accepting new patients | |
| MCHS Hospitals Inc | Current | Accepting new patients | |
| DLP Marquette Physician Practices Inc | Current | Accepting new patients | |
| Lakeview Medical Center Inc of Rice Lake | Current | Accepting new patients | |
| Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. | Radiation Oncology | Current | 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
- 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.
-
- Clinic/Center
- Rice Lake, WI
- NPI 1093201832
-
- Emergency Medical Services (Emergency Medicine) Physician
- Iron Mountain, MI
- NPI 1891751186
-
- Clinic/Center
- Stevens Point, WI
- NPI 1144991340
-
- Clinic/Center
- Beaver Dam, WI
- NPI 1972188555
-
- Clinic/Center
- Park Falls, WI
- NPI 1194317966
-
- Critical Access Hospital
- Park Falls, WI
- NPI 1700963048
-
- Clinic/Center
- Marshfield, WI
- NPI 1952347981
-
- Clinic/Center
- Marshfield, WI
- NPI 1093221434
-
- Critical Access Hospital
- Ladysmith, WI
- NPI 1952890873
-
- Critical Access Hospital
- Neillsville, WI
- NPI 1346239373
-
- Internal Medicine Physician
- Milwaukee, WI
- NPI 1699720086
-
- Obesity Medicine (Internal Medicine) Physician
- Marquette, MI
- NPI 1487902995
Hospital & facility affiliations 5
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Rural Acute Care Hospital
- Rice Lake, WI
- NPI 1154415024
-
- Rural Acute Care Hospital
- Minocqua, WI
- NPI 1376197665
-
- General Acute Care Hospital
- Weston, WI
- NPI 1902437650
-
- Rural Acute Care Hospital
- Marshfield, WI
- NPI 1942749387
-
- General Acute Care Hospital
- Eau Claire, WI
- NPI 1952809816
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.