Organization Active NPI

Mountainside Oral Surgery LLC

  • Oral and Maxillofacial Surgery (Dentist)
  • Portland, OR
National Provider Identifier
1275441453
Registry record updated Aug 31, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Oral and Maxillofacial Surgery (Dentist)Taxonomy code 1223S0112X
Legal business name
MOUNTAINSIDE ORAL SURGERY LLC
Practice address
4401 SW Vermont St
Portland, OR 97219-1020
Phone
(503) 297-4102
NPI assigned
Aug 31, 2026
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 31, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Dr. Benjamin James, DDS
Title
Owner
Phone
(541) 666-6091

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Oral and Maxillofacial Surgery (Dentist)Group: 193400000X SINGLE SPECIALTY GROUP 1223S0112X Primary

Addresses

Primary practice location

4401 SW Vermont St
Portland, OR 97219-1020

Mailing address

1609 SE Barberry Ave
Dallas, OR 97338-1974

Other practice location 1

2690 May St Ste 102
Hood River, OR 97031-9786
Phone (503) 297-4102

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1788134400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1788134400000",
    "number": "1275441453",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1609 SE BARBERRY AVE",
            "city": "DALLAS",
            "state": "OR",
            "postal_code": "973381974"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4401 SW VERMONT ST",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972191020",
            "telephone_number": "503-297-4102"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2690 May St Ste 102",
            "address_purpose": "LOCATION",
            "city": "Hood River",
            "state": "OR",
            "postal_code": "970319786",
            "country_code": "US",
            "telephone_number": "503-297-4102",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "MOUNTAINSIDE ORAL SURGERY LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-08-31",
        "last_updated": "2026-08-31",
        "certification_date": "2026-08-30",
        "status": "A",
        "authorized_official_last_name": "JAMES",
        "authorized_official_first_name": "BENJAMIN",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "541-666-6091",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DDS"
    },
    "taxonomies": [
        {
            "code": "1223S0112X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Dentist, Oral and Maxillofacial Surgery",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 31, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.