Medicare Enrolled
Dr. Geoffrey Sakellis, M.D.
Radiation Oncology · Springfield, MA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
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. Sakellis 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. Sakellis?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Sakellis
Dr. Geoffrey Sakellis is a radiation oncology specialist in Springfield, MA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Sakellis performed 12,606 Medicare services across 2,473 unique beneficiaries.
Between the years covered by Open Payments, Dr. Sakellis received a total of $932 from 5 pharmaceutical and/or device companies across 9 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiation oncology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Sakellis 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
▲ Top 8% volume in MA
$932 industry payments
Medicare Practice Summary
Medicare Utilization ↗12,606
Medicare services
Top 8% in MA for radiation oncology
2,473
Unique beneficiaries
$60
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~663 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. |
4,925 | $0 | $2 |
| MRI contrast dye injection (gadoterate) Administration of gadoterate meglumine, a contrast agent, in a 0.1 ml dose. |
4,790 | $0 | $1 |
| Piflufolastat F-18 diagnostic injection A diagnostic injection of the radioactive tracer piflufolastat F-18 used for imaging. The dose specified is 1 millicurie. |
459 | $489 | $1,022 |
| 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. |
290 | $798 | $3,279 |
| Technetium Tc-99m medronate diagnostic injection An injection of Technetium Tc-99m medronate used for diagnostic imaging studies. The dose administered is up to 30 millicuries per study. |
160 | $12 | $65 |
| Nuclear medicine liver and bile duct study with drugs A nuclear medicine imaging test to examine the liver and bile duct system using administered drugs. |
139 | $288 | $2,269 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 139 | $286 | $1,000 |
| Technetium tc-99m mebrofenin, diagnostic, per study dose, up to 15 millicuries | 134 | $50 | $253 |
| 3D screening mammography (tomosynthesis) A screening imaging test of the breast using 3D technology to detect potential abnormalities. |
132 | $24 | $134 |
| Screening mammography An X-ray of the breast used to detect breast cancer in women who have no signs or symptoms of the disease. |
130 | $90 | $526 |
| Injection, sincalide, 5 micrograms | 130 | $97 | $153 |
| Whole body bone and joint nuclear medicine scan A nuclear medicine imaging test that uses a radioactive tracer to create pictures of the entire skeleton and joints. This scan helps evaluate bone health and detect abnormalities throughout the body. |
102 | $184 | $1,582 |
| Injection, furosemide, up to 20 mg | 89 | $0 | $94 |
| 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. |
85 | $15 | $110 |
| Nuclear medicine stomach emptying study A nuclear medicine test used to assess how quickly the stomach empties its contents. |
72 | $219 | $1,668 |
| Technetium Tc-99m sulfur colloid diagnostic injection A diagnostic injection of Technetium Tc-99m sulfur colloid used for imaging studies. The dose administered is up to 20 millicuries per study. |
72 | $241 | $304 |
| MRI of lower spine, without contrast A magnetic resonance imaging scan of the lower spinal canal that does not use contrast dye to create detailed images of the spine. |
54 | $90 | $1,240 |
| Nuclear medicine kidney blood flow and function study A nuclear medicine test that evaluates blood flow and function of the kidneys. |
45 | $271 | $1,960 |
| 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. |
44 | $28 | $162 |
| Technetium tc-99m mertiatide, diagnostic, per study dose, up to 15 millicuries | 44 | $699 | $3,533 |
| 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. |
42 | $57 | $591 |
| Bone scan with multiple time points A nuclear medicine imaging test that captures images of the bones at various intervals to assess bone health and detect abnormalities. |
42 | $253 | $1,858 |
| 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. |
33 | $24 | $148 |
| Lung ventilation and perfusion scan A nuclear medicine test that uses radioactive tracers to evaluate both air flow (ventilation) and blood flow (perfusion) in the lungs. |
33 | $241 | $1,790 |
| Technetium Tc-99m MAA diagnostic injection A radioactive tracer injection used for diagnostic imaging studies. The dose administered is up to 10 millicuries. |
32 | $27 | $500 |
| 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. |
30 | $19 | $109 |
| SPECT/CT scan, single area A nuclear medicine imaging study that combines single-photon emission computed tomography (SPECT) with a concurrent CT scan to create detailed images of a single body area. |
29 | $344 | $2,627 |
| 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. |
26 | $20 | $134 |
| 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. |
23 | $70 | $595 |
| MRI of leg joint, without contrast A magnetic resonance imaging scan of a joint in the leg performed without the use of contrast dye. |
21 | $101 | $882 |
| 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. |
21 | $195 | $1,414 |
| Whole body nuclear medicine scan with CT A combined imaging procedure using nuclear medicine and CT scans to visualize the entire body. |
21 | $747 | $3,225 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
20 | $52 | $406 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
19 | $24 | $164 |
| MRI of upper spine without contrast An MRI scan of the upper spinal canal that does not use contrast dye. This imaging test uses magnetic fields and radio waves to create detailed pictures of the spine. |
17 | $80 | $1,239 |
| 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. |
16 | $31 | $188 |
| 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. |
16 | $57 | $467 |
| 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. |
15 | $137 | $952 |
| MRI of brain with and without contrast An MRI scan of the brain using contrast dye both before and after administration to provide detailed images of brain structures. |
14 | $163 | $1,832 |
| 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. |
14 | $56 | $692 |
| SPECT nuclear medicine scan, 1 area A nuclear medicine imaging test using a single photon emission computed tomography (SPECT) scan to create detailed images of one specific area of the body. |
14 | $262 | $1,710 |
| 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. |
13 | $21 | $127 |
| Bone/joint nuclear medicine scan, limited area A nuclear medicine imaging test that uses a small amount of radioactive material to create pictures of a specific bone or joint area. |
13 | $166 | $1,236 |
| 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. |
12 | $53 | $507 |
| 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. |
12 | $104 | $1,463 |
| 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. |
12 | $89 | $518 |
| 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. |
11 | $18 | $134 |
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.
0.3% high complexity
92.6% medium
7.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$932
Total received (2018-2024)
Avg $155/year across 6 years
Top 38% in MA for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
5
Companies
9
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.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$932 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$118
2023
$242
2022
$252
2021
$100
2019
$95
2018
$126
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
PROGENICS PHARMACEUTICALS, INC.
$118
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Blue Earth Diagnostics Limited
$453
Progenics Pharmaceuticals, Inc.
$227
PROGENICS PHARMACEUTICALS, INC.
$118
GE HEALTHCARE
$95
Telix Pharmaceuticals
$39
Top 3 companies account for 85.6% of all-time payments
Associated products mentioned in payments ›
Axumin · ILLUCCIX · POSLUMA · PYLARIFY
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 →
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
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. Sakellis is a mixed practice specialist, with above-average Medicare volume (top 8% in MA), with low-engagement industry engagement, 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. Sakellis experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Sakellis performed 4,925 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. Sakellis receive payments from pharmaceutical companies?
Yes. Dr. Sakellis received a total of $932 from 5 companies across 9 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. Sakellis's costs compare to other radiation oncologists in Springfield?
Dr. Sakellis's average Medicare payment per service is $60. 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. Sakellis) 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 →
Explore related providers
Same specialty & city
Radiation Oncologists in Springfield
Browse radiation oncologists in Springfield ranked by procedure volume and transparency data.
Highest volume
Top Radiation Oncologists in MA
Radiation oncologists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Radiation Oncologists in MA
Which MA radiation oncologists receive the most from drug and device companies.
By company
Blue Earth Diagnostics Limited Payments to Doctors
See all physicians who received payments from Blue Earth Diagnostics Limited.
By company
Progenics Pharmaceuticals, Inc. Payments to Doctors
See all physicians who received payments from Progenics Pharmaceuticals, Inc.
By company
PROGENICS PHARMACEUTICALS, INC. Payments to Doctors
See all physicians who received payments from PROGENICS PHARMACEUTICALS, INC.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology