Active NPI
Dean Herbert Orvis, PT
- Physical Therapist
- Great Falls, MT
National Provider Identifier
1801933619
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physical Therapist
- License
- 1009
- Practice address
- 1101 26TH St S
Great Falls, MT 59405-5161 - Phone
- (406) 455-5000
- NPI assigned
- Jan 31, 2007
- 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 |
|---|---|---|---|---|
| Physical Therapist | 225100000X | 10666-024 | WI | |
| Physical Therapist | 225100000X | 1009 | MT | Primary |
Addresses
Primary practice location
1101 26TH St S
Great Falls, MT 59405-5161
Mailing address
1101 26TH St S
Great Falls, MT 59405-5161
Phone (406) 455-5000
Other practice location 1
1401 25th St S
Great Falls, MT 59405-5183
Phone (406) 731-8930
Other identifiers 2
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1009 | Other | MT | PHYSICAL THERAPIST |
| 10666-024 | Other | WI | PHYSICAL THERAPIST |
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)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 1009 | MT | MD | Chiropractor |
| 10666-024 | WI | MD | Physical Therapist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1170201600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1763337600000",
"number": "1801933619",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1101 26TH ST S",
"city": "GREAT FALLS",
"state": "MT",
"postal_code": "594055161",
"telephone_number": "406-455-5000"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1101 26TH ST S",
"city": "GREAT FALLS",
"state": "MT",
"postal_code": "594055161",
"telephone_number": "406-455-5000"
}
],
"practiceLocations": [
{
"address_1": "1401 25th St S",
"address_purpose": "LOCATION",
"city": "Great Falls",
"state": "MT",
"postal_code": "594055183",
"country_code": "US",
"telephone_number": "406-731-8930",
"fax_number": "406-731-8935",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "ORVIS",
"first_name": "DEAN",
"middle_name": "HERBERT",
"credential": "PT",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2007-01-31",
"last_updated": "2025-11-17",
"certification_date": "2025-11-17",
"status": "A"
},
"taxonomies": [
{
"code": "225100000X",
"taxonomy_group": "",
"desc": "Physical Therapist",
"state": "WI",
"license": "10666-024",
"primary": false
},
{
"code": "225100000X",
"taxonomy_group": "",
"desc": "Physical Therapist",
"state": "MT",
"license": "1009",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "PHYSICAL THERAPIST",
"identifier": "1009",
"state": "MT"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "PHYSICAL THERAPIST",
"identifier": "10666-024",
"state": "WI"
}
],
"endpoints": [],
"other_names": []
}Other providers in Great Falls, MT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 17, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.