Doctor profile · Federal record
Dr. John Williams, M.D.
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Austin, TX
- NPI 1902855281
- Accepts Medicare
- MIPS 83.1 / 100 · 2023
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
12554 Riata Vista Cir
Austin, TX 787276431
(512) 795-5100
fax (512) 795-5122
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- October 3, 2018
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State license (1)
- Texas #M6955
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902855281. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
11,779
Distinct HCPCS
10
Medicare allowed
$180,664
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
A9585 |
Injection, gadobutrol, 0.1 ml | 3,955 | 52 | $0 | |
Q9967 |
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 3,255 | 41 | $0 | |
71045 |
X-ray of chest, 1 view | 1,316 | 1,068 | $9 | |
71046 |
X-ray of chest, 2 views | 516 | 506 | $20 | |
71046 |
X-ray of chest, 2 views | 171 | 171 | $10 | |
77063 |
Screening 3d breast mammography | 129 | 129 | $53 | |
77067 |
Screening mammography | 129 | 129 | $127 | |
71250 |
Ct scan of chest without contrast | 126 | 124 | $97 | |
74018 |
X-ray of abdomen, 1 view | 121 | 110 | $9 | |
74177 |
Ct scan of abdomen and pelvis with contrast | 110 | 109 | $86 |
In context: peer comparison
Among 48 peers in Austin Diagnostic Radiology Physician, average services per provider: 214. This provider delivers 55× the peer median.Open Payments
Industry payments received
All-time total
$96
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Penumbra, INC. | 1 | $95.73 |
By nature of payment
Frequently asked questions
What is Dr. John Williams's medical specialty?
Dr. John Williams practices Diagnostic Radiology Physician in Austin, TX.
Where does Dr. John Williams practice?
Dr. John Williams practices at 12554 Riata Vista Cir, Austin, TX 787276431. Office phone: 5127955100.
What is Dr. John Williams's NPI?
Dr. John Williams's National Provider Identifier (NPI) is 1902855281, issued by NPPES.
Does Dr. John Williams accept Medicare assignment?
Yes. Dr. John Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Williams commonly perform?
Top Medicare-reported procedures in 2023: Injection, gadobutrol, 0.1 ml (HCPCS A9585); Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS Q9967); X-ray of chest, 1 view (HCPCS 71045). Source: CMS Medicare Physician & Other Practitioners file.