Medicare Enrolled
Dr. Jonathan Rassi, M.D.
Radiation Oncology · Burlington, MA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
High
DATA COVERAGE
Data in 3 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. Rassi 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. Rassi?
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What this data tells you about Dr. Rassi
Dr. Jonathan Rassi is a radiation oncology specialist in Burlington, MA, with 14 years of NPI registration. Based on federal Medicare data, Dr. Rassi performed 3,669 Medicare services in 2023. These records do not provide a deduplicated patient total.
The Data Coverage level for Dr. Rassi is 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.
✓ 14 years of NPI registration
▲ Top 38% volume in MA
Medicare Practice Summary — 2023
Medicare Utilization ↗3,669
Medicare services
Top 38% in MA for radiation oncology
Not available
Unique patients (not deduplicated)
$24
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
844 | $16 | $107 |
| 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. |
218 | $7 | $41 |
| Bone density scan (DEXA) of forearm, finger, hand, or foot A DEXA scan measures bone mineral density in the forearm, finger, hand, or foot. This test helps assess bone strength and risk of fracture. |
156 | $17 | $63 |
| 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. |
150 | $66 | $391 |
| 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. |
136 | $8 | $49 |
| Fluoroscopic guidance for needle placement Use of real-time X-ray imaging to guide the precise placement of a needle during a medical procedure. |
133 | $22 | $118 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
110 | $36 | $218 |
| 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. |
97 | $15 | $86 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
95 | $27 | $160 |
| 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. |
89 | $9 | $49 |
| 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. |
87 | $40 | $223 |
| 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. |
86 | $8 | $49 |
| 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. |
73 | $67 | $403 |
| 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. |
73 | $8 | $49 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
72 | $43 | $261 |
| 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. |
68 | $71 | $374 |
| 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. |
68 | $21 | $128 |
| Complete ultrasound of abdomen and pelvis blood flow This procedure uses sound waves to create images of blood flow in the arteries and veins of the abdomen and pelvis. It evaluates the rate and direction of blood movement within these vessels. |
65 | $44 | $346 |
| 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. |
60 | $7 | $45 |
| MRI of arm joint, without contrast An MRI scan uses magnetic fields and radio waves to create detailed images of the arm joint. This specific procedure is performed without the use of a contrast dye. |
57 | $53 | $290 |
| MRI of leg joint, without contrast A magnetic resonance imaging scan of a joint in the leg performed without the use of contrast dye. |
48 | $53 | $290 |
| 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. |
46 | $9 | $57 |
| X-ray of upper spine, 2-3 views An X-ray imaging test of the upper spine using two to three different angles to visualize the bones and structures. |
44 | $8 | $49 |
| Complete ultrasound scan of joint An ultrasound exam that uses sound waves to create detailed images of a joint. This procedure allows for the visualization of the joint's internal structures. |
42 | $36 | $146 |
| 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. |
40 | $17 | $98 |
| 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. |
38 | $8 | $48 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
38 | $33 | $174 |
| 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. |
37 | $6 | $41 |
| 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. |
37 | $22 | $121 |
| CT scan of leg, without contrast A computed tomography scan of the leg performed without the use of contrast dye. This imaging test uses X-rays to create detailed cross-sectional images of the leg's internal structures. |
36 | $36 | $216 |
| 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. |
33 | $7 | $38 |
| 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. |
33 | $83 | $472 |
| Complete pelvic ultrasound An imaging test using sound waves to create pictures of the organs and structures within the pelvis. |
33 | $26 | $150 |
| 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. |
30 | $8 | $48 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
29 | $7 | $41 |
| Transvaginal pelvic ultrasound An ultrasound exam using a probe inserted into the vagina to image the uterus, ovaries, fallopian tubes, cervix, and surrounding pelvic structures. |
29 | $26 | $150 |
| 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. |
28 | $78 | $431 |
| 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. |
24 | $7 | $39 |
| Ultrasound scan of organ tissue for measuring elasticity This procedure uses ultrasound technology to assess the stiffness or elasticity of organ tissues. It helps evaluate tissue characteristics without invasive methods. |
24 | $19 | $128 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
23 | $10 | $57 |
| Limited ultrasound of joint or extremity A focused ultrasound exam of a specific joint or other structure in the arm or leg, excluding blood vessels. |
22 | $26 | $120 |
| Joint fluid aspiration or injection, medium joint Removal of fluid from a medium-sized joint or injection of medication into the joint space. |
21 | $29 | $178 |
| 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. |
21 | $10 | $64 |
| MRI of leg with and without contrast An MRI scan of the leg performed both before and after the administration of a contrast dye to enhance image detail. |
19 | $81 | $462 |
| 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. |
18 | $8 | $43 |
| Ultrasound of scrotum An imaging test that uses sound waves to create pictures of the scrotum and its contents. It helps evaluate the testicles and surrounding structures. |
18 | $23 | $139 |
| 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. |
17 | $28 | $151 |
| Joint fluid aspiration or injection, small joint Removal of fluid from a small joint or injection of medication into a small joint. |
16 | $27 | $159 |
| CT scan of arm, without contrast A CT scan of the arm that uses X-rays to create detailed images of the arm's internal structures without the use of contrast dye. |
16 | $37 | $216 |
| X-ray of middle spine, 2 views An X-ray imaging test that produces two views of the middle section of the spine to visualize the bones and joints. |
14 | $8 | $48 |
| Swallowing function imaging Imaging used to evaluate how well a person can swallow. This procedure visualizes the swallowing process to assess function. |
13 | $22 | $116 |
| 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. |
12 | $7 | $38 |
| 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. |
11 | $11 | $64 |
| MRI of arm with and without contrast An MRI scan of the arm performed both before and after the administration of a contrast dye to enhance image detail. |
11 | $79 | $462 |
| Limited retroperitoneal ultrasound A focused ultrasound exam of the area behind the abdominal cavity to evaluate specific structures. |
11 | $22 | $126 |
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. These counts do not measure clinical quality or years of experience.
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | — No payments | N/A |
| Disciplinary History | — Not included | N/A |
This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Rassi is a mixed practice specialist, with moderate Medicare volume.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Rassi experienced with bone density scan (dexa)?
Based on Medicare claims data, Dr. Rassi performed 844 bone density scan (dexa) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
How do Dr. Rassi's costs compare to other radiation oncologists in Burlington?
Dr. Rassi's average Medicare payment per service is $24. 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 High for Dr. Rassi) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, 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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