Physician Profile
Unclaimed ProfileAbout WILLIAMSON
John Andrew Williamson, M.D. practises diagnostic radiology in Austin, TX. John is a 1998 graduate of Duke University School of Medicine.
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 kind of doctor is Dr. Williamson?
Dr. Williamson is a diagnostic radiology in Austin, TX. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
What is Dr. Williamson's address?
Dr. Williamson is listed at 12554 RIATA VISTA CIR, Austin, TX 78727. 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 (512) 795-5100. 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 1083732176. 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 Duke University School of Medicine, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Williamson been practising?
Dr. Williamson has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Williamson perform?
According to Medicare billing data, Dr. Williamson performs procedures including biopsy and aspiration of bone marrow sample for diagnosis; reads or performs imaging such as x-ray of chest, 1 view and ct scan of abdomen and pelvis with contrast; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers and ultrasound of both sides of head and neck blood flow. 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.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (512) 795-5100
- Email not available
Practice Locations
12554 RIATA VISTA CIR
Austin, TX 78727
Procedures Most Often Billed to Medicare
3,720 services · 2,308 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy and aspiration of bone marrow sample for diagnosis | Procedure | 38222 |
65 |
| X-ray of chest, 1 view | Imaging | 71045 |
1,004 |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
150 |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
125 |
| X-ray of chest, 2 views | Imaging | 71046 |
92 |
| Review by radiologist of ct guidance for needle placement | Imaging | 77012 |
87 |
| Ct scan of chest without contrast | Imaging | 71250 |
87 |
| X-ray of abdomen, 1 view | Imaging | 74018 |
82 |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
80 |
| Ct scan of chest with contrast | Imaging | 71260 |
70 |
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.
Other diagnostic radiology specialists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 28 related providers in 4 groups
Other diagnostic radiology specialists in Austin 4
Same specialty, same city.
Trained at Duke University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1998 at Duke University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy and aspiration of bone marrow sample for diagnosis 8
Providers in TX who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.