Silas Marshall, M.D.
NPI 1225217011 · Orthopaedic Surgery Physician · Bellevue, WA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Silas Marshall, M.D. is a Orthopaedic Surgery Physician provider in Bellevue, WA (NPI 1225217011).
Provider details
- NPI number
- 1225217011
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD60386052 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
677 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 203 | $141 |
| X-Ray of Thigh Bone, Minimum 2 Views73552 | 67 | $41 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 60 | $40 |
| X-Ray of Hip, 2-3 Views73502 | 54 | $52 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 51 | $137 |
| X-Ray of Knee, 1-2 Views73560 | 50 | $37 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 24 | 19 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 23 | 22 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-10-29
- Last updated
- 2014-01-24
Frequently asked questions
- What is Silas Marshall's NPI number?
- Silas Marshall's National Provider Identifier (NPI) is 1225217011, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Silas Marshall's specialty?
- Silas Marshall is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Silas Marshall located?
- Silas Marshall's practice location on file with NPPES is 1231 116th Ave Ne, Bellevue, WA 98004-3804.
- What is Silas Marshall's phone number?
- The practice phone number listed in the NPPES registry for Silas Marshall is (425) 455-3600.
- Does Silas Marshall accept Medicare?
- Silas Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Silas Marshall's NPI active?
- Yes — Silas Marshall's NPI (1225217011) is active in the NPPES registry as of the last update on 2014-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.