Active NPI
Leah Ellis Wells, MD
- Medical Oncology Physician
- Madison, WI
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Medical Oncology Physician
- License
- 85449-20
- Practice address
- 600 Highland Ave
Madison, WI 53792-3670 - Phone
- (608) 262-9368
- NPI assigned
- Apr 3, 2019
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Hematology & Oncology Physician | 207RH0003X | 85449-20 | WI | |
| Immunopathology Physician | 207ZI0100X | 85449-20 | WI | |
| Medical Oncology Physician | 207RX0202X | 85449-20 | WI | Primary |
Addresses
Primary practice location
600 Highland Ave
Madison, WI 53792-3670
Mailing address
7974 Uw Health CT
Middleton, WI 53562-5531
Other names 1
- Miss Leah Catherine Ellis
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
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Medical Oncology
- Education
- Mercer University School of Medicine, 2019
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
705 S University Ave
Beaver Dam, WI 53916-3053
Phone (608) 287-2770
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 85449-20 | WI | MD | Medical Oncology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| University of Wisconsin Medical Foundation, Inc | Current | Accepting new patients | |
| University of Wisconsin Medical Foundation, Inc | Current | Accepting new patients | |
| University of Wisconsin Medical Foundation Inc | Past | Accepting new patients |
Locations
705 S University Ave
Beaver Dam, WI 53916
Phone (920) 885-6090
1000 Mineral Point Ave
Janesville, WI 53548
Phone (608) 261-6868
600 Highland Ave
Madison, WI 53792
Phone (608) 263-0325
600 Highland Ave
#5666
Madison, WI 53792
4621 Eastpark Blvd
Madison, WI 53718
Phone (608) 914-0100
7974 Uw Health Ct
Middleton, WI 53562
Phone (608) 829-5270
Organizations & group practices 3
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.
-
- Multi-Specialty Clinic/Center
- Middleton, WI
- NPI 1598784555
-
- Health Educator
- Madison, WI
- NPI 1487414082
-
- Durable Medical Equipment & Medical Supplies
- Cross Plains, WI
- NPI 1174583363
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Madison, WI
- NPI 1922043744
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1554249600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1755129600000",
"number": "1548722929",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "7974 UW HEALTH CT",
"city": "MIDDLETON",
"state": "WI",
"postal_code": "535625531"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "600 HIGHLAND AVE",
"city": "MADISON",
"state": "WI",
"postal_code": "537923670",
"telephone_number": "608-262-9368"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WELLS",
"first_name": "LEAH",
"middle_name": "ELLIS",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2019-04-03",
"last_updated": "2025-08-14",
"certification_date": "2025-08-14",
"status": "A"
},
"taxonomies": [
{
"code": "207RH0003X",
"taxonomy_group": "",
"desc": "Internal Medicine, Hematology & Oncology",
"state": "WI",
"license": "85449-20",
"primary": false
},
{
"code": "207ZI0100X",
"taxonomy_group": "",
"desc": "Pathology, Immunopathology",
"state": "WI",
"license": "85449-20",
"primary": false
},
{
"code": "207RX0202X",
"taxonomy_group": "",
"desc": "Internal Medicine, Medical Oncology",
"state": "WI",
"license": "85449-20",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "LEAH",
"last_name": "ELLIS",
"middle_name": "CATHERINE",
"prefix": "MISS",
"code": "1",
"type": "Former Name"
}
]
}
Other providers in Madison, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 14, 2025; 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.