Active NPI
Erik Legrand Mangelson, DDS
- Oral and Maxillofacial Surgery (Dentist)
- Billings, MT
National Provider Identifier
1497493142
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Oral and Maxillofacial Surgery (Dentist)
- License
- DEN-DEN-LIC-33232
- Practice address
- 152 S 32ND St W Ste B
Billings, MT 59102-6875 - Phone
- (406) 655-0170
- Fax
- (406) 655-2271
- NPI assigned
- May 23, 2022
- Last updated
- Jul 10, 2026
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Oral and Maxillofacial Surgery (Dentist) | 1223S0112X | DEN-DEN-LIC-33232 | MT | Primary |
| Oral & Maxillofacial Surgery (D.M.D.) | 204E00000X | DEN-DEN-LIC-33232 | MT | |
| Oral & Maxillofacial Surgery (D.M.D.) | 204E00000X | 1719 | WY |
Addresses
Primary practice location
152 S 32ND St W Ste B
Billings, MT 59102-6875
Mailing address
152 S 32ND St W Ste B
Billings, MT 59102-6875
Phone (406) 655-0170
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: No
- Hospice: Yes
Care Compare profile
Medicare Care Compare- Specialty
- Oral Surgery
- Education
- University of Utah School of Dentistry, 2022
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
152 S 32ND St W
Suite B
Billings, MT 59102-6875
6428 S Castlefield LN
Salt Lake City, UT 84107-7582
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| RES-30630 | IA | MD | Oral and Maxillofacial Surgery (Dentist) |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1653264000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783641600000",
"number": "1497493142",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "152 S 32ND ST W STE B",
"city": "BILLINGS",
"state": "MT",
"postal_code": "591026875",
"telephone_number": "406-655-0170",
"fax_number": "406-655-2271"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "152 S 32ND ST W STE B",
"city": "BILLINGS",
"state": "MT",
"postal_code": "591026875",
"telephone_number": "406-655-0170",
"fax_number": "406-655-2271"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MANGELSON",
"first_name": "ERIK",
"middle_name": "LEGRAND",
"name_prefix": "Dr.",
"credential": "DDS",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-05-23",
"last_updated": "2026-07-10",
"certification_date": "2026-07-10",
"status": "A"
},
"taxonomies": [
{
"code": "1223S0112X",
"taxonomy_group": "",
"desc": "Dentist, Oral and Maxillofacial Surgery",
"state": "MT",
"license": "DEN-DEN-LIC-33232",
"primary": true
},
{
"code": "204E00000X",
"taxonomy_group": "",
"desc": "Oral & Maxillofacial Surgery",
"state": "MT",
"license": "DEN-DEN-LIC-33232",
"primary": false
},
{
"code": "204E00000X",
"taxonomy_group": "",
"desc": "Oral & Maxillofacial Surgery",
"state": "WY",
"license": "1719",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Billings, MT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 10, 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.