Physician Profile
Unclaimed ProfileAbout WILLIAMSON
Casey Williamson, M.D. is a healthcare provider in Portland, OR specializing in radiation oncology. Casey trained at University of California, San Diego School of Medicine, graduating in 2017. Casey is also listed as specializing in student in an organized health care education program. According to Medicare claims data, Casey cared for 414 Medicare patients across 737 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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (818) 364-1555
- Email not available
Practice Locations
3181 SW SAM JACKSON PARK RD
Portland, OR 97239
Procedures Most Often Billed to Medicare
737 services · 414 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
289 |
| Calculation of radiation therapy dose | Imaging | 77300 |
103 |
| Radiation treatment management, 5 treatment sessions | Imaging | 77427 |
70 |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
45 |
| Complex radiation therapy planning | Imaging | 77263 |
35 |
| Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | Imaging | 77290 |
29 |
| Design and construction of radiation treatment device for high precision radiation therapy | Imaging | 77338 |
27 |
| High precision radiation therapy planning | Imaging | 77301 |
26 |
| Special radiation treatment | Imaging | 77470 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
35 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 radiation oncology specialists in Portland 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ct guidance for insertion of radiation therapy fields 8
Providers in OR who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Williamson?
Dr. Williamson is a radiation oncology in Portland, OR. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RADIATION ONCOLOGY”.
NPI registry
What is Dr. Williamson's address?
Dr. Williamson is listed at 3181 SW SAM JACKSON PARK RD, Portland, OR 97239. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Williamson?
The number on file is (818) 364-1555. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Williamson's NPI number?
Dr. Williamson's National Provider Identifier is 1437683570. 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. Williamson train?
Dr. Williamson attended University of California, San Diego School of Medicine, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Williamson been practicing?
Dr. Williamson has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Williamson perform?
According to Medicare billing data, Dr. Williamson performs imaging including ct guidance for insertion of radiation therapy fields and calculation of radiation therapy dose, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Williamson confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Williamson. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.