Physician Profile
Unclaimed ProfileAbout GWIN
Based in Seattle, WA, William Rayford Gwin, MD is listed in the NPI registry under medical oncology. William graduated from University of Alabama School of Medicine in 2006. According to Medicare claims data, William cared for 149 Medicare patients across 280 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Gwin specialise in?
Dr. Gwin is a medical oncology in Seattle, WA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “MEDICAL ONCOLOGY”.
NPI registry
Where is Dr. Gwin located?
Dr. Gwin is listed at 325 9TH AVE, Seattle, WA 98104. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Gwin's phone number?
The number on file is (206) 744-5100. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Gwin's NPI number?
Dr. Gwin's National Provider Identifier is 1598875882. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Gwin go to medical school?
Dr. Gwin attended University of Alabama School of Medicine, graduating in 2006. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Gwin been practising?
Dr. Gwin has 20 years experience. Calculated from a graduation year of 2006, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Gwin do most often?
According to Medicare billing data, Dr. Gwin the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Gwin confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gwin. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (206) 744-5100
- Email not available
Practice Locations
325 9TH AVE
Seattle, WA 98104
Procedures Most Often Billed to Medicare
280 services · 149 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
172 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
58 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
32 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other medical oncology specialists in Seattle 8
Same specialty, same city.
Trained at University of Alabama School of Medicine 7
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2006 at University of Alabama School of Medicine 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.