Matthew Siljander, MD
NPI 1831509355ActiveIndividual· Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery· Newport Beach, CA
Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery (MD) in Newport Beach, California, licensed in CA, MI and MN, with an NPI issued in May 2014. 654 Medicare patients in 2024, $275,465 paid; nearly all of their 965 Part D prescriptions were generic (99%). Encore Medical, LP reported $30,366 in payments in 2025, mostly consulting fees.
Overview
| NPI | 1831509355 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 6, 2014 |
| Last updated in NPPES | Jul 17, 2020 |
| Certified by provider | Jul 17, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery Primary | 207XS0114X | A167823 | CA |
| Orthopaedic Surgery | 207X00000X | 4301105181 | MI |
| Orthopaedic Surgery | 207X00000X | 65225 | MN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 654 |
|---|---|
| Services billed | 3,712 across 59 procedure codes |
| Paid by Medicare | $275,465 |
Part D prescriptions in 2024
| Prescriptions (claims) | 965 · 992 30-day fills |
|---|---|
| Patients | 289 |
| Total drug cost | $14,783 |
| Generic share | 99% of claims |
Industry payments (Open Payments)
- 2025$30,366 · 21 payments from 1 company
- 2024$45,811 · 48 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Encore Medical, LP | $30,366 | 21 |
What the 2025 payments were for
- Consulting Fee$25,025 · 12 payments
- Travel and Lodging$5,313 · 8 payments
- Food and Beverage$28.01 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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