Medicare Enrolled
Dr. Roger Williams, DO
Radiation Oncology · Marietta, GA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Consulting-driven
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Williams from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Williams
Dr. Roger Williams is a radiation oncology specialist in Marietta, GA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Williams performed 1,391 Medicare services across 1,210 unique beneficiaries.
Between the years covered by Open Payments, Dr. Williams received a total of $136,802 from 30 pharmaceutical and/or device companies across 215 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiation oncology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Williams is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 19 years in practice
▲ 1,391 Medicare services
$136,802 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,391
Medicare services
Bottom 38% in GA for radiation oncology
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
1,210
Unique beneficiaries
$31
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~73 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Chest X-ray, 1 view An X-ray image of the chest taken from a single angle. This imaging test is used to visualize the structures within the chest cavity. |
481 | $7 | $46 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
84 | $7 | $46 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
74 | $10 | $61 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
62 | $56 | $349 |
| CT scan of chest blood vessels with contrast A CT scan that uses contrast dye to create detailed images of the blood vessels in the chest. |
59 | $68 | $462 |
| Abdominal fluid drainage with imaging guidance Removal of fluid from the abdominal cavity using imaging technology to guide the procedure. |
57 | $84 | $506 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
51 | $8 | $53 |
| CT scan of abdomen and pelvis with contrast A CT scan that uses dye to create detailed images of the abdomen and pelvis. This imaging test helps doctors examine internal organs and structures in these areas. |
46 | $70 | $605 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
32 | $27 | $164 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
31 | $21 | $131 |
| CT scan of abdomen and pelvis, without contrast A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye. |
30 | $67 | $578 |
| Limited abdominal ultrasound A focused ultrasound examination of the abdomen to evaluate specific organs or areas. This procedure uses sound waves to create images of internal structures. |
27 | $22 | $142 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
24 | $17 | $108 |
| CT scan of chest, without contrast A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye. |
23 | $39 | $279 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
22 | $11 | $74 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
21 | $134 | $757 |
| Knee X-ray, 1-2 views An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures. |
20 | $7 | $41 |
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
19 | $7 | $44 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
19 | $28 | $176 |
| CT-guided tissue removal A procedure using computed tomography imaging to guide the removal of tissue from the body. |
18 | $147 | $964 |
| Infusion tube insertion with imaging guidance A radiologist inserts an infusion tube into the body while using imaging guidance to ensure proper placement and reviews the procedure. |
17 | $67 | $414 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
17 | $31 | $146 |
| Core needle biopsy of lung or mediastinum A procedure to remove a small tissue sample from the lung or the space between the lungs using a needle inserted through the skin. |
15 | $113 | $974 |
| Bone marrow biopsy and aspiration A procedure to remove a small sample of bone marrow and liquid for laboratory testing. The sample is analyzed to help diagnose various medical conditions. |
15 | $61 | $383 |
| Stomach tube insertion with fluoroscopy and contrast A tube is placed into the stomach while using live X-ray imaging and a contrast dye to guide the procedure. |
14 | $153 | $1,107 |
| Kidney needle biopsy A procedure in which a needle is used to remove a small sample of kidney tissue for examination. |
14 | $94 | $688 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
13 | $87 | $933 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
13 | $7 | $44 |
| X-ray of thigh bone, minimum 2 views An X-ray imaging test of the thigh bone using at least two different angles to visualize the bone structure. |
13 | $7 | $47 |
| Foot X-ray, 3+ views An X-ray imaging test of the foot that captures at least three different views to evaluate the bones and joints. |
13 | $7 | $41 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
12 | $9 | $53 |
| Pelvis X-ray, 1-2 views An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints. |
12 | $7 | $41 |
| Hip X-ray, 2-3 views An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures. |
12 | $8 | $55 |
| Liver needle biopsy through skin A procedure in which a needle is inserted through the skin to remove a small sample of liver tissue for examination. |
11 | $57 | $876 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
1.2% high complexity
32.7% medium
66.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$136,802
Total received (2018-2024)
Avg $19,543/year across 7 years
Top 1% in GA for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
30
Companies
215
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$126,029 (92.1%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$10,773 (7.9%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$8,652
2023
$11,283
2022
$5,797
2021
$27,470
2020
$6,552
2019
$25,671
2018
$51,377
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Medical Device Business Services, Inc.
$4,250
Terumo Medical Corporation
$2,816
Ethicon US, LLC
$354
Bard Peripheral Vascular, Inc.
$300
Philips North America LLC
$281
HISTOSONICS,INC.
$184
Okami Medical, Inc.
$171
Siemens Medical Solutions USA, Inc.
$137
PFIZER INC.
$86
Boston Scientific Corporation
$53
Medtronic, Inc.
$19
Top 3 companies account for 85.8% of 2024 payments
All-time payments by company (2018-2024) ›
Medical Device Business Services, Inc.
$95,663
Ethicon US, LLC
$22,904
Biocompatibles, Inc.
$6,860
Terumo Medical Corporation
$3,418
Medtronic USA, Inc.
$1,409
Boston Scientific Corporation
$1,322
Sirtex Medical Inc
$1,076
Ethicon Endo-Surgery Inc.
$532
Philips Electronics North America Corporation
$462
Penumbra, Inc.
$449
Bard Peripheral Vascular, Inc.
$318
Philips North America LLC
$281
Medtronic Vascular, Inc.
$267
ARGON MEDICAL DEVICES, INC.
$219
Cook Medical LLC
$204
Medtronic, Inc.
$194
HISTOSONICS,INC.
$184
Okami Medical, Inc.
$171
Balt USA, LLC
$155
Siemens Medical Solutions USA, Inc.
$137
Merit Medical Systems Inc
$112
Varian Medical Systems, Inc.
$105
AngioDynamics, Inc.
$88
PFIZER INC.
$86
Stryker Corporation
$75
Seagen Inc.
$39
E.R. Squibb & Sons, L.L.C.
$21
Takeda Pharmaceuticals U.S.A., Inc.
$21
CARDIVA MEDICAL, INC.
$17
Ipsen Biopharmaceuticals, Inc
$13
Top 3 companies account for 91.7% of all-time payments
Associated products mentioned in payments ›
(1240) iXR Undivided · (173) EPIQ 7G · (8324) Azurion 7 M20 · (9688) EPIQ Elite G · (BI2) IGT Systems Undivided · (BJ6) EPIQ Elite G · ALUNBRIG · ANGIO-SEAL · ANGIOJET · ARTIS icono biplane · AZUR · AZUR CX DETACHABLE · AngioJet Ultra 5000A · Artis icono floor · Azurion 7 M20 · CARDIVA VASCADE 6/7F VCS · CERTUS 140 MICROWAVE ABLATION SYSTEM · CLEANER · CONCERTO VERSA · COOK · Certus 140 · Concerto · Concerto Versa · Cook Medical Catheters · ELUVIA · EPIQ 7G · ETHICON ENDO-SURGERY Curved Intraluminal Stapler · EkoSonic · GENERAL - VASCULAR INTERVENTION · GENERAL EMBOLICS · GLIDEWIRE · IBRANCE · IGT Equip Undiv · KYPHON Balloon Kyphoplasty · KYPHON EXPRESS II KYPHOPAK TRAY · LOBO · NAVICROSS · Neuwave · OSTEOCOOL RF ABLATION · PADCEV · Penumbra Ruby Coil · RUBY Coil · Rebar-APV · Ruby · SIR-Spheres Microspheres · SOMATULINE DEPOT · SPINEJACK · SwiftNINJA Sterble Cor Micro · THERASPHERE - BIO · THERASPHERE-BIO · TUKYSA · Trek · VISUAL-ICE · Valiant Navion
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
The majority of payments (92%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 1% for radiation oncology in GA.
Geographic Context
Radiation oncologists within 10 mi
432
Per 100K population
56.2
County median income
$98,712
Nearest hospital
WELLSTAR KENNESTONE REGIONAL MEDICAL CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Williams is a mixed practice specialist, with moderate Medicare volume, with consulting-driven industry engagement in the top 1% of GA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Williams experienced with chest x-ray, 1 view?
Based on Medicare claims data, Dr. Williams performed 481 chest x-ray, 1 view services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Williams receive payments from pharmaceutical companies?
Yes. Dr. Williams received a total of $136,802 from 30 companies across 215 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Williams's costs compare to other radiation oncologists in Marietta?
Dr. Williams's average Medicare payment per service is $31. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Williams) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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