Silas T. Marshall, M.D.
Orthopaedic Surgery Physician · Bellevue, WA
Silas T. Marshall, M.D. is an orthopaedic surgery physician with a practice address in Bellevue, Washington, and NPI 1225217011, issued on Oct 29, 2007. Check the license (Washington MD60386052, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Silas T. Marshall
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- MD60386052 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1231 116TH Ave NE, Bellevue, WA 98004
- Phone
- (425) 455-3600
- Enumerated
- Oct 29, 2007
- Record last updated
- Jan 24, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (425) 455-3920
- Medicare enrollment
- Enrolled (PECOS I20130913000462); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 656 in Washington → Look up another NPI →
Also registered at 1231 116TH Ave NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Abel, ARNPWomen's Health Nurse Practitioner1609875855
- Cynthia Anonsen, MDOtolaryngology Physician1568417608
- Thomas Castle, MDOrthopaedic Surgery Physician1881665677
- Sung Cho, MDSurgery Physician1588822951
- Alexandra Degroot, AUDAudiologist1437426970
- Shelby Dobbs, PACSurgical Physician Assistant1184669491
Verify Silas T. Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60386052Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
105 Medicare Part D claims for 62 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 58 claims were for opioids.
Most prescribed
- Oxycodone Hcl24 claims
- Hydrocodone-Acetaminophen23 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Proliance Surgeons Inc P SIssaquah, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Silas T. Marshall among 656 orthopaedic surgery physician records in Washington
Silas T. Marshall, M.D. is one of 656 orthopaedic surgery physician records with a practice address in Washington. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 54% of them.
- NPI issued2007 · 54% of these records are older, 34% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2007 · median 2004 among the 385 with a school on file
- Record last updated2014 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Washington
There are 656 orthopaedic surgery physician records in Washington.
All 656 in Washington → Every provider in Bellevue → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Clayton Brandes, MDBellevue, WA 980041396716346
- James Bruckner, MDBellevue, WA 980041154392942
- Thomas Castle, MDBellevue, WA 980041881665677
- Thomas Chi, MDBellevue, WA 980041487625430
- Frederic Chi, M.D.Bellevue, WA 980041700828555
- Gregory Komenda, M.D.Bellevue, WA 980041972562528
- Peter Mandt, M.D.Bellevue, WA 980041730158148
- Mathew Nicholls, MDBellevue, WA 980041336180413
Common questions
What is Silas T. Marshall, M.D.'s NPI number?
Silas T. Marshall, M.D.'s National Provider Identifier (NPI) is 1225217011, issued on Oct 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Silas T. Marshall, M.D. located?
The NPPES record lists a practice address at 1231 116TH Ave NE, Bellevue, WA, 98004. Phone: (425) 455-3600. Providers update this record themselves, so call before visiting.
How can I verify Silas T. Marshall, M.D.'s license?
NPPES lists Washington license number MD60386052, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Silas T. Marshall, M.D. prescribe under Medicare Part D?
In 2024, Silas T. Marshall, M.D. had 105 Medicare Part D claims for 62 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.