STEPHEN J WALLACE MD PC
STEPHEN J WALLACE MD PC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1063176352, based in Lake Oswego, OR. The organization lists 2 taxonomy classifications, with Orthopaedic Trauma Physician recorded as primary.
Getting there
The practice address on file is 4103 MERCANTILE DR, Lake Oswego, OR 97035. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 1759770274
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Orthopaedic Trauma covers
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. NUCC Health Care Provider Taxonomy, code 207XX0801X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207XX0801X | Orthopaedic Trauma Physician Orthopaedic Trauma | — | — | primary |
| 207X00000X | Orthopaedic Surgery Physician | — | — |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1063176352 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Oct 24, 2021 |
| Last updated | Jan 8, 2026 |
| Status | Active |
| Practice address |
4103 MERCANTILE DR Lake Oswego, OR 97035 (503) 850-9940 Fax (503) 850-6709 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 6 | 3 | 1 | 7 | 6 | 3 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 3 | 3 | 2 | 7 | 3 | 3 | 1 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.