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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MOUNTAINSIDE ORAL SURGERY LLC
NPI 1275441453
Dentist - Oral and Maxillofacial Surgery in Portland, OR

Active since August 31, 2026
4401 SW VERMONT ST, PORTLAND, OR 97219(503) 297-4102 Get Directions Write a Review

NPPES record added: August 31, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mountainside Oral Surgery Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MOUNTAINSIDE ORAL SURGERY LLC (NPI 1275441453) is a healthcare organization registered as an oral and maxillofacial surgery in Portland, Oregon and active in the NPI registry since August 2026. The organization maintains a secondary practice location in Hood River and lists Benjamin James, Owner, as its authorized official.

NPPES Registry Identity

NPI1275441453
Entity TypeOrganization
Primary Taxonomy1223S0112X
Legal Business NameMOUNTAINSIDE ORAL SURGERY LLC
Location Address4401 SW VERMONT STPortland, OR 97219-1020
Mailing Address1609 Se Barberry AveDallas, OR 97338-1974
Phone(503) 297-4102
Organization SubpartNo
Authorized OfficialBenjamin JamesOwner · (541) 666-6091
Enumeration DateAugust 31, 2026
NPPES CertifiedAugust 30, 2026
✔ NPI 1275441453 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Oral and Maxillofacial SurgeryDental Providers
Taxonomy Code1223S0112X
Definition
An oral and maxillofacial surgery dentist specialized in the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region.
4401 SW VERMONT ST, Portland, OR 97219
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Secondary Practice Location 1

Location 12690 May St Ste 102Hood River, OR 97031-9786 · Phone (503) 297-4102

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Delta Dental Plan of Oregon.Insurance ›

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KYOKO ABE D.M.D
Dentist
4401 SW VERMONT ST
PORTLAND, OR 97219
Multnomah County (503) 297-4102

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mountainside Oral Surgery LLC's NPI number?

The NPI number for Mountainside Oral Surgery LLC is 1275441453. It was assigned to this organization in the NPPES registry on August 31, 2026.

Where is Mountainside Oral Surgery LLC located?

Mountainside Oral Surgery LLC is located at 4401 SW Vermont St, Portland, OR 97219. The listed phone number is (503) 297-4102.

What is Mountainside Oral Surgery LLC's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.

What insurance does Mountainside Oral Surgery LLC accept?

Health plans from Delta Dental Plan of Oregon list Mountainside Oral Surgery LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mountainside Oral Surgery LLC was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 51 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.