DR. SILAS T. MARSHALL M.D.
NPI 1225217011
Orthopaedic Surgery in Bellevue, WA

Active since October 29, 2007PECOS EnrolledAccepts Medicare Assignment
1231 116TH AVE NE, SUITE 750, BELLEVUE, WA 98004(425) 455-3600(425) 455-3920 Get Directions Write a Review

NPPES record last updated: January 24, 2014. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Silas T. Marshall M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SILAS T. MARSHALL M.D. (NPI 1225217011) is an individual orthopaedic surgery provider in Bellevue, Washington, licensed in Washington (MD60386052) and active in the NPI registry since October 2007. He is enrolled in Medicare PECOS, is affiliated with Overlake Hospital Medical Center, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1225217011
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. SILAS T. MARSHALLCredential: M.D.
Location Address1231 116TH AVE NE, SUITE 750Bellevue, WA 98004-3804
Mailing Address805 Madison St, Suite 901Seattle, WA 98104-1172 · (206) 264-8100
Fax(425) 455-3920
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateOctober 29, 2007
Last NPPES UpdateJanuary 24, 2014
NPI 1225217011 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License Licensed in WA · MD60386052
Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Also ListedOrthopaedic Surgery · Orthopaedic TraumaTaxonomy 207XX0801X · License MD60386052 (WA)
1231 116TH AVE NE, Bellevue, WA 98004

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Silas T. Marshall M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113180837
PECOS Enrollment IDI20130913000462
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 17

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit, 30-39 minutes 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
257 services145 patients
X-ray of shoulder, minimum of 2 views 73030
An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.
118 services54 patients
Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702
This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.
86 services17 patients
Established patient office or other outpatient visit, 20-29 minutes 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
58 services49 patients
New patient office or other outpatient visit, 45-59 minutes 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
57 services57 patients
X-ray of knee, 1-2 views 73560
An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.
56 services28 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Overlake Hospital Medical Center

Acute Care Hospitals · Bellevue, WA
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number500051
Location1035-116th Ave NEBellevue, WA 98004 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98004 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Orthopaedic Surgery
1231 116TH AVE NE, SUITE 750
BELLEVUE, WA 98004
Orthopaedic Surgery
1231 116TH AVE NE, SUITE 750
BELLEVUE, WA 98004
Physician Assistant (Surgical)
1231 116TH AVE NE, SUITE 750
BELLEVUE, WA 98004
Physician Assistant (Surgical)
1231 116TH AVE NE, SUITE 750
BELLEVUE, WA 98004
Physician Assistant (Surgical)
1231 116TH AVE NE, SUITE 750
BELLEVUE, WA 98004
Physician Assistant
1231 116TH AVE NE, SUITE 750
BELLEVUE, WA 98004
Orthopaedic Surgery
1231 116TH AVE NE, SUITE 100
BELLEVUE, WA 98004
Orthopaedic Surgery
1231 116TH AVE NE, SUITE 750
BELLEVUE, WA 98004

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1225217011, enumerated as an "individual" on October 29, 2007.

The provider is located at 1231 116TH AVE NE SUITE 750 BELLEVUE, WA 98004 and the phone number is (425) 455-3600.

Orthopaedic Surgery with taxonomy code 207X00000X.

The provider might be accepting Accepts: PacificSource Health Plans, Premera Blue Cross. Please consult your insurance carrier or call the provider to verify.

Silas Marshall is affiliated with: OVERLAKE HOSPITAL MEDICAL CENTER.