Matthew Siljander, MD
NPI 1831509355 · Adult Reconstructive Orthopaedic Surgery Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Siljander, MD is a Adult Reconstructive Orthopaedic Surgery Physician provider in Newport Beach, CA (NPI 1831509355).
Provider details
- NPI number
- 1831509355
- Entity type
- Individual
- Primary specialty
- Adult Reconstructive Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301105181 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,076 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 535 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 340 | $138 |
| X-Ray of Knee, 4 Or More Views73564 | 197 | $54 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 185 | $76 |
| X-Ray of Hip, 1 View73501 | 173 | $37 |
| X-Ray of Knee, 3 Views73562 | 140 | $47 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tramadol Hcl | 197 | 152 |
| Meloxicam | 169 | 133 |
| Methocarbamol | 136 | 103 |
| Oxycodone Hcl | 130 | 92 |
| Amoxicillin | 111 | 93 |
| Naloxone Hcl | 110 | 107 |
| Clindamycin Hcl | 25 | 21 |
| Hydrocodone/Acetaminophen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$45,811 across 48 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 3535 W 13 Mile RdSte 744Royal Oak, MI 48073-6770Phone: (248) 551-1852
- 200 1st St SwRochester, MN 55905Phone: (507) 284-2511
Registry dates
- Enumerated
- 2014-05-06
- Last updated
- 2020-07-17
- Certified
- 2020-07-17
Frequently asked questions
- What is Matthew Siljander's NPI number?
- Matthew Siljander's National Provider Identifier (NPI) is 1831509355, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Siljander's specialty?
- Matthew Siljander is listed in the NPPES registry with a primary specialty of Adult Reconstructive Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Siljander located?
- Matthew Siljander's practice location on file with NPPES is 22 Corporate Plaza Dr, Newport Beach, CA 92660-7985.
- What is Matthew Siljander's phone number?
- The practice phone number listed in the NPPES registry for Matthew Siljander is (949) 722-7038.
- Does Matthew Siljander accept Medicare?
- Matthew Siljander is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Siljander's NPI active?
- Yes — Matthew Siljander's NPI (1831509355) is active in the NPPES registry as of the last update on 2020-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.