Active NPI
William Bruce Ellis, M.D.
- Emergency Medicine Physician
- Butte, MT
National Provider Identifier
1821025792
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Emergency Medicine Physician
- License
- 3763
- Practice address
- 400 S Clark St
Butte, MT 59701-2328 - Phone
- (406) 723-2500
- NPI assigned
- Jun 27, 2006
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Emergency Medicine Physician | 207P00000X | 3763 | MT | Primary |
Addresses
Primary practice location
400 S Clark St
Butte, MT 59701-2328
Mailing address
401 S Alabama Street
Butte, MT 59701
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 3763 | MT | MD | Pharmacist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1151366400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1789862400000",
"number": "1821025792",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "401 S ALABAMA STREET",
"city": "BUTTE",
"state": "MT",
"postal_code": "59701"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "400 S CLARK ST",
"city": "BUTTE",
"state": "MT",
"postal_code": "597012328",
"telephone_number": "406-723-2500"
}
],
"practiceLocations": [],
"basic": {
"last_name": "ELLIS",
"first_name": "WILLIAM",
"middle_name": "BRUCE",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-06-27",
"last_updated": "2026-09-20",
"status": "A"
},
"taxonomies": [
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "MT",
"license": "3763",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Butte, MT
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- Sadie Rae Ellingson, LCPC
- Jan Ellis, LCSW
- Empres at Butte, LLC (Butte Health and Rehabilitation Center)
- Dawn M English, LCSW AND LCPC
- Samantha Mikayla Enloe, OTD, OTR/L
- Epiphany Dermatology of Montana, PLLC
- Jaden Howard Erwin, DDS, MSD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 20, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.