STEPHEN J WALLACE MD
NPI 1396162673
Orthopaedic Surgery - Orthopaedic Trauma in Lake Oswego, OR

Active since March 24, 2014PECOS EnrolledAccepts Medicare Assignment
4103 MERCANTILE DR, LAKE OSWEGO, OR 97035(503) 850-9940(503) 850-6709 Get Directions Write a Review

NPPES record last updated: January 8, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 8, 2026, Oct 24, 2021, Apr 9, 2021 and 1 more (4 updates tracked since 2019).

About Stephen J Wallace Md NPPES

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

STEPHEN J WALLACE MD (NPI 1396162673) is an individual orthopaedic trauma provider in Lake Oswego, Oregon, licensed in Oregon (MD206048) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS, is affiliated with Legacy Emanuel Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1396162673
Entity TypeIndividualMale
Primary Taxonomy207XX0801X
Provider Legal NameSTEPHEN J WALLACECredential: MD
Location Address4103 MERCANTILE DRLake Oswego, OR 97035-2556
Mailing Address4103 Mercantile DrLake Oswego, OR 97035-2556 · (503) 850-9940 · Fax (503) 850-6709
Fax(503) 850-6709
Sole ProprietorNo
Medical School CMSBaylor College Of MedicineGraduated 2014
Enumeration DateMarch 24, 2014
Last NPPES UpdateJanuary 8, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 8, 2026
NPI 1396162673 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOrthopaedic Surgery · Orthopaedic TraumaAllopathic & Osteopathic Physicians
Taxonomy Code207XX0801X
Licenses Licensed in OR · MD206048 Licensed in WA · MD60932486
Definition
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic trauma surgeons deal with the evaluation and management of acute orthopaedic injuries, evaluation and treatment of post-traumatic deformities and nonunions, acute and delayed reconstruction of pelvic and acetabular fractures, as well as osteotomy in the adult hip for treatment of hip arthritis.
Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License MD206048 (OR), MD60932486 (WA)
4103 MERCANTILE DR, Lake Oswego, OR 97035

Secondary Practice Locations 3

Location 1325 9th AveSeattle, WA 98104 · Phone (206) 520-5000
Location 22160 S 1st AveMaywood, IL 60153-3328 · Phone (708) 216-3280
Location 3535 E 70th StNew York, NY 10021-4823 · Phone (212) 606-1000

Other Identifiers 1

Medicaid1396162673WA

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Stephen J Wallace Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9931402864
PECOS Enrollment IDI20211122002255
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
17 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Legacy Emanuel Medical Center

Acute Care Hospitals · Portland, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380007
Location2801 N Gantenbein AvenuePortland, OR 97227 · Multnomah County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

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

Nurse Practitioner (Family)
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035
Orthopaedic Surgery (Orthopaedic Trauma)
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035
Orthopaedic Surgery
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035
Orthopaedic Surgery
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035
Pediatrics
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035
Orthopaedic Surgery
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035
Physician Assistant
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035
Physician Assistant
4103 MERCANTILE DR
LAKE OSWEGO, OR 97035

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 Stephen Wallace's NPI number?

The NPI number for Stephen Wallace is 1396162673. It was assigned to this individual provider in the NPPES registry on March 24, 2014.

Where is Stephen Wallace located?

Stephen Wallace practices at 4103 Mercantile Dr, Lake Oswego, OR 97035. The listed phone number is (503) 850-9940.

What is Stephen Wallace's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Trauma, with taxonomy code 207XX0801X.

Is Stephen Wallace enrolled in Medicare?

Yes. Stephen Wallace is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Stephen Wallace accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and Regence BlueCross BlueShield of Oregon list Stephen Wallace 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.

Is Stephen Wallace affiliated with any hospitals?

According to CMS data, Stephen Wallace is affiliated with Legacy Emanuel Medical Center.

When was this NPI record last updated?

The NPPES record for Stephen Wallace was last updated on January 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.