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Edit this profileAt a glance
- 12554 Riata Vista Cir, Austin, TX 78727
About Dr. Williamson
John A. Williamson, M.D. practices diagnostic radiology in Austin, TX. John is a 1998 graduate of Duke University School of Medicine. According to Medicare claims data, John cared for 2,308 Medicare patients across 3,720 services. The services billed most often include low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, x-ray of chest, 1 view, and ct scan of abdomen and pelvis with contrast. The provider's National Provider Identifier (NPI) is 1083732176.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (512) 795-5100
- Email not available
Practice Locations
12554 RIATA VISTA CIR
Austin, TX 78727
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Abdominal imaging
Biopsies
Bone Density
Breast Imaging
CT Scan
Digestive & liver
Fluoroscopy
General imaging
Heart & blood vessels
Joint & bone
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
Spine & back
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
Procedures Most Often Billed to Medicare
3,720 services · 2,308 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy and aspiration of bone marrow sample for diagnosis | Procedure | 38222 |
65 | More than most peers in Diagnostic Radiology |
| X-ray of chest, 1 view | Imaging | 71045 |
1,004 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
150 | More often than most peers in Diagnostic Radiology |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
125 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
92 | As often as other peers in Diagnostic Radiology |
| Review by radiologist of ct guidance for needle placement | Imaging | 77012 |
87 | More than most peers in Diagnostic Radiology |
| Ct scan of chest without contrast | Imaging | 71250 |
87 | As often as other peers in Diagnostic Radiology |
| X-ray of abdomen, 1 view | Imaging | 74018 |
82 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
80 | As often as other peers in Diagnostic Radiology |
| Ct scan of chest with contrast | Imaging | 71260 |
70 | More often than most peers in Diagnostic Radiology |
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.
Other radiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 3
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 radiologists 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.
Common questions
What kind of doctor is John A. Williamson?
John A. Williamson is a radiologist in Austin, TX. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
What is John A. Williamson's address?
John A. 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 John A. Williamson?
The number on file is (512) 795-5100. Contact the office directly to confirm availability and scheduling.
NPI registry
What is John A. Williamson's NPI number?
John A. 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 John A. Williamson train?
John A. Williamson attended Duke University School of Medicine, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has John A. Williamson been practicing?
John A. 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 John A. Williamson perform?
According to Medicare billing data, John A. 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 John A. Williamson confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John A. Williamson. If this is you, claiming it is free.
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