Medicare Enrolled
Dr. Omar Chohan, D.O.
Radiation Oncology · Williamsville, NY
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. Chohan 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 →
Are you Dr. Chohan?
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What this data tells you about Dr. Chohan
Dr. Omar Chohan is a radiation oncology specialist in Williamsville, NY, with 13 years of NPI registration. Based on federal Medicare data, Dr. Chohan performed 8,076 Medicare services across 2,334 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chohan received a total of $55,088 from 30 pharmaceutical and/or device companies across 306 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. Chohan 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.
✓ 13 years in practice
▲ Top 20% volume in NY
$55,088 industry payments
Medicare Practice Summary
Medicare Utilization ↗8,076
Medicare services
Top 20% in NY for radiation oncology
2,334
Unique beneficiaries
$9
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~621 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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
5,371 | $0 | $2 |
| 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. |
618 | $7 | $19 |
| Gadobenate dimeglumine injection Administration of gadobenate dimeglumine, a contrast agent used to enhance imaging results. |
225 | $1 | $1 |
| 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. |
176 | $8 | $25 |
| CT scan of head/brain, without contrast A CT scan uses X-rays to create detailed images of the head or brain without the use of contrast dye. |
133 | $29 | $91 |
| 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. |
73 | $20 | $58 |
| 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. |
70 | $66 | $198 |
| Abdominal fluid drainage with imaging guidance Removal of fluid from the abdominal cavity using imaging technology to guide the procedure. |
57 | $79 | $447 |
| 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. |
57 | $7 | $16 |
| CT scan of upper spine, without contrast A CT scan uses X-rays to create detailed images of the upper spine. This procedure is performed without the use of contrast dye. |
56 | $35 | $99 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
51 | $8 | $22 |
| 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. |
47 | $7 | $27 |
| 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. |
44 | $65 | $183 |
| 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. |
42 | $6 | $19 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
40 | $83 | $723 |
| 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. |
40 | $38 | $132 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
37 | $76 | $129 |
| Fluoroscopic guidance for central vein access device Use of live X-ray imaging to guide the placement or removal of a central vein access device. |
36 | $14 | $32 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
35 | $24 | $70 |
| CT scan of lower spine, without contrast A computed tomography scan that creates detailed images of the lower spine using X-rays without the use of contrast dye. |
31 | $34 | $83 |
| Ankle X-ray, minimum 3 views An X-ray imaging test of the ankle that captures at least three different angles to evaluate the bones and joints. |
30 | $6 | $18 |
| Additional sedation, per 15 minutes Administration of a drug to deepen sedation during a procedure. This code covers each additional 15-minute increment of sedation beyond the initial period. |
29 | $8 | $17 |
| CT scan of middle spine, without contrast A CT scan of the middle spine performed without the use of contrast dye. This imaging test uses X-rays to create detailed pictures of the vertebrae and surrounding structures. |
27 | $34 | $77 |
| Ultrasound of transplanted kidney An ultrasound scan of a transplanted kidney to visualize its structure and blood flow. This imaging test helps assess the health and function of the transplanted organ. |
27 | $27 | $46 |
| CT scan of neck blood vessels with contrast A computed tomography scan that uses dye to visualize the blood vessels in the neck. This imaging test helps examine the structure and flow within the neck's vascular system. |
26 | $62 | $144 |
| 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. |
26 | $6 | $16 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
25 | $40 | $184 |
| X-ray of hand, minimum of 3 views An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints. |
25 | $6 | $18 |
| Elbow X-ray, minimum 3 views An X-ray imaging test of the elbow joint that captures at least three different angles to visualize the bones and surrounding structures. |
23 | $6 | $16 |
| CT scan of abdomen and pelvis with contrast A CT scan of the abdomen and pelvis using contrast dye before and after administration to visualize internal structures. |
23 | $270 | $998 |
| 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. |
22 | $6 | $20 |
| 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. |
22 | $7 | $26 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
22 | $21 | $65 |
| X-ray of lower leg, 2 views An X-ray imaging test of the lower leg using two different angles to visualize the bones and surrounding structures. |
21 | $5 | $15 |
| 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. |
21 | $11 | $25 |
| 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. |
21 | $23 | $114 |
| Kidney needle biopsy A procedure in which a needle is used to remove a small sample of kidney tissue for examination. |
20 | $89 | $1,126 |
| 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. |
20 | $18 | $76 |
| 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. |
19 | $64 | $697 |
| CT scan of head blood vessels with contrast A CT scan that uses contrast dye to create detailed images of the blood vessels in the head. |
19 | $65 | $157 |
| Midazolam injection, per 1 mg Administration of midazolam hydrochloride, a sedative medication, measured in 1 mg increments. |
19 | $0 | $0 |
| Insertion of tunneled central venous catheter for infusion, age 5+ A surgical procedure to place a long-term catheter into a large vein for delivering medications or fluids. The catheter is tunneled under the skin to reduce infection risk and provide stable access for patients aged 5 and older. |
18 | $197 | $1,390 |
| X-ray of lower and sacral spine, minimum of 4 views An X-ray imaging test of the lower back and sacrum using at least four different angles to visualize the bones and joints. |
18 | $10 | $37 |
| Wrist X-ray, minimum 3 views An imaging test using X-rays to capture at least three different angles of the wrist bones and joints. |
18 | $6 | $16 |
| 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. |
18 | $135 | $590 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
17 | $67 | $191 |
| 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. |
17 | $16 | $69 |
| CT scan of face, without contrast A computed tomography scan that creates detailed images of the facial structures. This procedure is performed without the use of intravenous contrast dye. |
16 | $25 | $82 |
| X-ray of upper arm, minimum of 2 views An X-ray imaging test of the upper arm that captures at least two different views to evaluate the bones and surrounding structures. |
16 | $6 | $17 |
| Injection, fentanyl citrate, 0.1 mg | 16 | $0 | $0 |
| CT scan of abdominal and pelvic blood vessels with contrast A computed tomography scan that uses contrast dye to visualize the blood vessels in the abdomen and pelvis. |
15 | $268 | $776 |
| MRI of abdomen with and without contrast An MRI scan of the abdomen using contrast dye before and after administration to create detailed images of internal structures. |
15 | $205 | $1,392 |
| 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. |
15 | $38 | $81 |
| 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. |
14 | $8 | $22 |
| CT scan of abdominal aorta and leg arteries with contrast A CT scan that uses contrast dye to create detailed images of the abdominal aorta and the arteries in both legs. |
14 | $135 | $407 |
| MRI scan of brain, without contrast A magnetic resonance imaging test of the brain that does not use contrast dye. This procedure creates detailed images of the brain's structure using magnetic fields and radio waves. |
13 | $54 | $182 |
| Low dose CT scan of chest for lung cancer screening A specialized CT scan of the chest using a lower radiation dose to screen for lung cancer. |
13 | $50 | $149 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
13 | $30 | $117 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
13 | $54 | $102 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
12 | $35 | $130 |
| X-ray of upper spine, 4-5 views An X-ray imaging test of the upper spine using 4 to 5 different views to visualize the bones and structures in that area. |
12 | $9 | $30 |
| 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 | $14 |
| Fluoroscopic guidance for needle placement Use of real-time X-ray imaging to guide the precise placement of a needle during a medical procedure. |
12 | $21 | $47 |
| 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. |
12 | $25 | $128 |
| Nuclear medicine scan from skull base to mid-thigh with CT A nuclear medicine imaging study covering the area from the base of the skull to the middle of the thighs, performed alongside a CT scan. |
11 | $81 | $433 |
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.
0.8% high complexity
81.7% medium
17.5% routine
Industry Payment Transparency
Open Payments through 2024 ↗$55,088
Total received (2018-2024)
Avg $7,870/year across 7 years
Top 4% in NY for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
30
Companies
306
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
$28,328 (51.4%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$16,090 (29.2%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$10,670 (19.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$29,058
2023
$7,579
2022
$10,254
2021
$3,244
2020
$464
2019
$2,314
2018
$2,176
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Penumbra, Inc.
$13,260
Contego Medical, Inc
$10,051
Okami Medical, Inc.
$4,178
Inari Medical, Inc.
$612
ShockWave Medical, Inc
$275
TriSalus Life Sciences, Inc.
$186
Sirtex Medical Inc
$116
Medtronic, Inc.
$111
Boston Scientific Corporation
$92
W. L. Gore & Associates, Inc.
$80
Bard Peripheral Vascular, Inc.
$33
Abbott Laboratories
$23
Philips North America LLC
$22
Shape Memory Medical Inc.
$18
Top 3 companies account for 94.6% of 2024 payments
All-time payments by company (2018-2024) ›
Penumbra, Inc.
$15,960
Okami Medical, Inc.
$15,606
Contego Medical, Inc
$10,051
Inari Medical, Inc.
$2,890
ARGON MEDICAL DEVICES, INC.
$1,683
Boston Scientific Corporation
$1,641
EKOS Corporation
$1,334
Medical Device Business Services, Inc.
$873
Abbott Laboratories
$736
Medtronic, Inc.
$667
Sirtex Medical Inc
$603
TriSalus Life Sciences, Inc.
$584
W. L. Gore & Associates, Inc.
$427
Bard Peripheral Vascular, Inc.
$288
Edwards Lifesciences Corporation
$278
ShockWave Medical, Inc
$275
Inceptus Medical, LLC
$263
Cook Medical LLC
$179
Terumo Medical Corporation
$173
AngioDynamics, Inc.
$171
Cardiovascular Systems Inc.
$96
BARD PERIPHERAL VASCULAR, INC.
$67
Philips Electronics North America Corporation
$59
Balt USA, LLC
$42
E.R. Squibb & Sons, L.L.C.
$34
Biocompatibles, Inc.
$32
BOSTON SCIENTIFIC CORPORATION
$23
Philips North America LLC
$22
Shape Memory Medical Inc.
$18
Medtronic Vascular, Inc.
$14
Top 3 companies account for 75.5% of all-time payments
Associated products mentioned in payments ›
(4067) Tack Endo Sys BTK · (5027) Intact Vascular Und · (P84) IGT Devices Systems · ABRE · AMPLATZ GOOSE NECK · ANGIO-SEAL · ANGIOJET · AURYON LASER SYSTEM 100-120 VAC · AZUR · AngioSeal · Azur CX Detachable · CERTUS 140 MICROWAVE ABLATION SYSTEM · CHOCOLATE PTA BALLOON CATHETER · CLEANER · CLINICAL TRIAL PRODUCT · CT THROMBECTOMY SYSTEM KIT · Cleaner · Cook · Cook Medical Angioplasty · DIREXION · Denali Vena Cava Filter · Diamondback Peripheral · EKOSONIC · ELIQUIS · ELLIPSYS VASCULAR ACCESS SYSTEM · ELUVIA · EMBOLD Fibered · EMBOZENE · EPIC VASCULAR · EXCIPIO SV · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · EkoSonic · FLOWTRIEVER CATHETER · FlowTriever · GENERAL ATHERECTOMY · GENERAL EMBOLICS · GENERAL NON VASCULAR INTERVENTION · GENERAL VASCULAR INTERVENTION · GENERAL ATHERECTOMY · GENERAL EMBOLICS · GENERAL THERAPIES · GLIDEWIRE · GORE VIABAHN Endoprosthesis · GORE VIABAHN Endoprosthesis with Heparin · GORE VIABAHN VBX Balloon Expandable Endo · GORE VIABIL Biliary Endoprosthesis · GORE VIATORR TIPS Endoprosthesis · HAWKONE · IDC · IGT D Peripheral · IMPEDE EMBOLIZATION PLUG · IN.PACT ADMIRAL · IN.PACT AV · Indigo · Indigo System · JETI PERIPHERAL CATHETER · LAVA LES (Liquid Embolic System) · LOBO · MITRACLIP · MVP · Mo.Ma · OMNILINK ELITE · PACIFIC XTREME · Penumbra Ruby Coil · Peripheral Orbital Atherectomy System · Prestige Coil System · RUBY Coil · S · SET Aspirex S 10F 110cm · SIR-Spheres Microspheres · SMART PORT CT · SUPERA · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · THERASPHERE-BIO · TRINAV INFUSION SYSTEM · Tornado · TrailBlazer · VARITHENA · VENOVO · VIABAHN Endoprosthesis with PROPATEN Bioactive Surface · VIATORR Endoprosthesis · VenaSeal · Venovo
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 (51%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 4% for radiation oncology in NY.
Geographic Context
Radiation oncologists within 10 mi
142
Per 100K population
14.9
County median income
$71,175
Nearest hospital
UPSTATE NEW YORK VA HEALTHCARE SYSTEM (WESTERN NY VA HEALTHCARE SYSTEM)
5.6 mi
5.6 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. Chohan is a mixed practice specialist, with above-average Medicare volume (top 20% in NY), with consulting-driven industry engagement in the top 4% of NY peers.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Chohan experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Chohan performed 5,371 contrast dye for imaging (iodine-based) 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. Chohan receive payments from pharmaceutical companies?
Yes. Dr. Chohan received a total of $55,088 from 30 companies across 306 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. Chohan's costs compare to other radiation oncologists in Williamsville?
Dr. Chohan's average Medicare payment per service is $9. 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. Chohan) 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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