STEPHEN J WALLACE MD
NPI 1396162673
Orthopaedic Surgery - Orthopaedic Trauma in Lake Oswego, OR
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 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
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.
Medicare Billing Reassignments
2Medicare enrollment records show Stephen Wallace reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lake Oswego, OR 97035
- Reassigned Medicare billing, Oregon enrollment
Lake Oswego, OR 97035
- Reassigned Medicare billing, Oregon enrollment
- 8 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
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, OROther Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAKE OSWEGO, OR 97035
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 4250 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.
Which organizations bill Medicare for Stephen Wallace's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Wallace reassigns Medicare benefits to 2 organizations: Stephen J Wallace MD PC (Lake Oswego, OR) and Summit Orthopaedics, LLP (Lake Oswego, OR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Stephen Wallace's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stephen Wallace accept?
Health plans from Ambetter Health, BridgeSpan Health Company, PacificSource Health Plans, 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 October 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Stephen J Wallace, MD · NPI 1396162673
Orthopaedic Trauma physician in Lake Oswego, Oregon. Individual provider, active in the CMS NPPES registry since March 24, 2014.
## Identity
- **NPI:** 1396162673 (Entity type: Individual)
- **Enumerated:** March 24, 2014
- **Primary specialty:** Orthopaedic Surgery - Orthopaedic Trauma · taxonomy 207XX0801X
- **State license:** MD206048 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 4250 MERCANTILE DR, Lake Oswego, OR 97035-2504
- **Phone:** (503) 850-9940 · **Fax:** (503) 850-6709
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Stephen J Wallace MD PC (NPI 1063176352, Lake Oswego, OR); Summit Orthopaedics, LLP (NPI 1427200021, Lake Oswego, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Baylor College Of Medicine, class of 2014
## Record status
- **NPPES last updated:** October 8, 2026
- **Other identifiers:** Medicaid 1396162673 (WA); Medicaid 500781621 (OR)
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Source: [NPI Profile](https://npiprofile.com/npi/1396162673) · Data from the CMS NPPES public registry.