Medicare Enrolled
Dr. Gregg Alzate, MD
Radiation Oncology · San Diego, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Mixed 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. Alzate 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. Alzate
Dr. Gregg Alzate is a radiation oncology specialist in San Diego, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Alzate performed 3,681 Medicare services across 1,051 unique beneficiaries.
Between the years covered by Open Payments, Dr. Alzate received a total of $74,994 from 35 pharmaceutical and/or device companies across 282 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiation oncology. Payments are distributed across multiple categories and often reflect legitimate professional engagement with the medical industry. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Alzate 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.
✓ 20 years in practice
▲ Top 39% volume in CA
$74,994 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,681
Medicare services
Top 39% in CA for radiation oncology
1,051
Unique beneficiaries
$49
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~184 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. |
2,540 | $0 | $1 |
| 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. |
298 | $6 | $29 |
| 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. |
88 | $28 | $100 |
| 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. |
72 | $14 | $59 |
| 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. |
58 | $9 | $24 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
57 | $79 | $258 |
| 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. |
56 | $66 | $296 |
| Abdominal fluid drainage with imaging guidance Removal of fluid from the abdominal cavity using imaging technology to guide the procedure. |
38 | $86 | $238 |
| Central venous port insertion A surgical procedure to place a small reservoir under the skin for long-term access to the bloodstream. The device is connected to a vein to allow for repeated medication administration or blood draws. |
33 | $268 | $1,113 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
28 | $56 | $177 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
27 | $41 | $192 |
| 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. |
26 | $31 | $169 |
| Radiologist review of abscess or sinus study A radiologist reviews the images from a study of an abscess or sinus cavity. |
23 | $19 | $83 |
| 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. |
22 | $211 | $884 |
| Contrast injection through abdominal tube for X-ray A contrast dye is injected into the abdomen through a tube to enhance visibility during an X-ray study. |
22 | $27 | $123 |
| 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. |
21 | $150 | $709 |
| 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. |
20 | $42 | $108 |
| Insertion of non-tunneled central venous catheter A procedure to place a central venous catheter for infusion in patients aged 5 years or older. The catheter is inserted directly into a large vein without being tunneled under the skin. |
18 | $62 | $378 |
| 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. |
17 | $91 | $831 |
| 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. |
17 | $11 | $47 |
| 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. |
16 | $53 | $248 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
16 | $25 | $104 |
| Arterial plaque removal, initial vessel A procedure to remove plaque buildup from an artery in the leg. This is performed on the first vessel treated during the session. |
15 | $7,667 | $19,560 |
| 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. |
15 | $96 | $645 |
| 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. |
14 | $122 | $500 |
| Balloon angioplasty of leg artery, initial vessel A procedure to widen a narrowed or blocked artery in the leg using a balloon catheter. This is performed on the first vessel treated during the session. |
14 | $427 | $739 |
| Stomach or large bowel tube replacement with fluoroscopy This procedure involves replacing a feeding tube in the stomach or large intestine. It is performed using fluoroscopic imaging and contrast dye to guide the placement. |
14 | $53 | $211 |
| Radiologist review of arm or leg artery image A radiologist reviews images of the arteries in the arm or leg. This process involves analyzing the visual data to assess the blood vessels. |
14 | $125 | $320 |
| 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. |
13 | $286 | $1,097 |
| 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 | $36 | $133 |
| 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. |
12 | $6 | $30 |
| 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 | $22 | $86 |
| Balloon dilation of leg artery A procedure to widen a narrowed or blocked artery in the leg using a balloon catheter to restore blood flow. |
11 | $248 | $1,424 |
| 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. |
11 | $169 | $683 |
| Radiologist review of arm or leg artery images A radiologist reviews images of the arteries in one or both arms or legs to assess blood flow and vessel health. |
11 | $74 | $202 |
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.
1.5% high complexity
78.4% medium
20.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$74,994
Total received (2018-2024)
Avg $10,713/year across 7 years
Top 2% in CA for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
35
Companies
282
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.
Other
Charitable contributions, space rental, and other categories
$52,024 (69.4%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$15,330 (20.4%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$6,018 (8.0%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$1,621 (2.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$33,048
2023
$21,612
2022
$3,497
2021
$2,819
2020
$1,248
2019
$9,325
2018
$3,444
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
AngioDynamics, Inc.
$31,940
Penumbra, Inc.
$307
Silk Road Medical, Inc.
$219
CORDIS US CORP.
$160
Terumo Medical Corporation
$123
Medtronic, Inc.
$73
Philips North America LLC
$73
Stryker Corporation
$49
Reflow Medical Inc
$45
Cook Medical LLC
$35
W. L. Gore & Associates, Inc.
$22
Top 3 companies account for 98.2% of 2024 payments
All-time payments by company (2018-2024) ›
AngioDynamics, Inc.
$52,128
Philips Electronics North America Corporation
$8,179
W. L. Gore & Associates, Inc.
$3,203
Cook Medical LLC
$3,150
Penumbra, Inc.
$1,994
Terumo Medical Corporation
$1,394
Stryker Corporation
$945
Canon Medical Systems USA, Inc.
$527
Viz.ai, Inc.
$399
Inari Medical, Inc.
$289
EKOS Corporation
$288
Bard Peripheral Vascular, Inc.
$235
Silk Road Medical, Inc.
$219
Cardinal Health 200, LLC
$218
Medtronic, Inc.
$203
Boston Scientific Corporation
$181
Medtronic Vascular, Inc.
$180
CORDIS US CORP.
$160
Ethicon US, LLC
$143
Surmodics, Inc.
$129
MicroVention, Inc.
$125
Abbott Laboratories
$105
Scientia Vascular
$100
Endologix, Inc.
$90
DePuy Synthes Sales Inc.
$90
Philips North America LLC
$73
Medtronic USA, Inc.
$56
Reflow Medical Inc
$45
Cardinal Health 200 LLC
$42
Covidien LP
$20
Veryan Medical Incorporated
$19
BIOTRONIK INC.
$18
Cardiovascular Systems Inc.
$18
BARD PERIPHERAL VASCULAR, INC.
$15
BOSTON SCIENTIFIC CORPORATION
$14
Top 3 companies account for 84.7% of all-time payments
Associated products mentioned in payments ›
(4067) Tack Endo Sys BTK · (5154) Azurion 7 M20 GC · (6554) Periph Vasc Undiv · (6582) Visions 035 · (8324) Azurion 7 M20 · (9520) IGT Devices Undivided · (P77) Azurion 7 M20 · ABRE · ADVANCED PRODUCT DEVELOPMENT · ALPHAVAC · ANGIO-SEAL · AURYON LASER SYSTEM 100-120 VAC · AVAFLEX · AZUR · AZUR CX DETACHABLE · Abre · Absolute Pro vascular stent system · AngioVac · Auryon Laser System 100-120 Vac · BioMimics 3D Vascular Stent System · C3 Delivery System · COOK · COOK MEDICAL CATHETERS · COOK MEDICAL EMBOLIZATION · COOK MEDICAL FILTERS · COOK MEDICAL IAA · COOK MEDICAL THORACIC · COOK MEDICAL ZENITH · COOK MEDICAL ZILVER PTX · COVERA · Certus 140 · Chameleon · Concerto · Cook · Cook Medical AAA · Cook Medical Accessories · Cook Medical Advanced Tech · Cook Medical Angioplasty · Cook Medical Drainage · Cook Medical Embolization · Cook Medical Filters · Cook Medical Nester · Cook Medical Stents · Cook Medical Thoracic · Cook Medical Zilver · Cook Medical Zilver PTX · EKOSONIC · EMBOTRAP II Revascularization Device · ENDURANT IIS · ENROUTE Transcarotid Neuroprotection System · EXCLUDER AAA Endoprosthesis · EXCLUDER Iliac Branch Endoprosthesis · Endurant · FLEXOR · FLOWTRIEVER CATHETER · Flexor · GENERAL - VASCULAR INTERVENTION · GENERAL THROMBECTOMY · GLIDESHEATH SLENDER · GORE TAG Conformable Thoracic Endoprosthesis · GORE TAG Thoracic Branch Endoprosthesis · GORE TAG Thoracic Endoprosthesis · GORE VIABAHN Endoprosthesis with Heparin · GORE VIABAHN VBX Balloon Expandable Endo · GORE VIATORR TIPS Endoprosthesis · General - Vascular Intervention · GlideWire · Glidesheath · HAWKONE · HYDROPEARL · HawkOne · Headway Microcatheter · HydroPearl · HydroSoft 3D Coil · IGT D Peripheral · IGT Devices Und · IGT_D Peripheral · IN.PACT ADMIRAL · IN.PACT AV · IN.PACT Admiral · IVAS · IVS - BONE CEMENTS- VERTAPLEX · IVS - VERTEBRAL AUGMENTATION PRODUCTS · Indigo · Indigo System · KYPHON Balloon Kyphoplasty · LUTONIX · Lasers · MISSION · MYNX CONTROL · MetaCross · NONE · Navicross · OPTABLATE · Ovation · PRECISE PRO RX · Palindrome · Passeo-18 · Penumbra Ruby Coil · Penumbra System · Peripheral Orbital Atherectomy System · ROSEN · RUBY Coil · S · S.M.A.R.T. CONTROL Self-Expanding Nitinol Stent · S.M.A.R.T. Flex Stent · SOFIA · SPINEPLEX · SYNCHRO SELECT · Scepter XC Balloon Catheter · Spectranetics Undiv · Sublime 014 Rx PTA Balloon Dilatation Catheter · TAG Thoracic Endoprosthesis · TARGET · THERASPHERE · TREVO · Tornado · US Und · VERTAPLEX HV · VIABAHN Endoprosthesis · VIABAHN Endoprosthesis with Heparin Bioactive Surface · VIABAHN VBX Balloon Expandable Endoprosthesis · Viz.AI LVO · ZILVER PTX · Zilver Vena
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 →
Payments are distributed across multiple categories with no single dominant type. Total industry engagement is in the top 2% for radiation oncology in CA.
Geographic Context
Radiation oncologists within 10 mi
425
Per 100K population
12.9
County median income
$102,285
Nearest hospital
SHARP MEMORIAL HOSPITAL
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. Alzate is a mixed practice specialist, with moderate Medicare volume, with mixed engagement industry engagement in the top 2% of CA peers, with 20 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. Alzate experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Alzate performed 2,540 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. Alzate receive payments from pharmaceutical companies?
Yes. Dr. Alzate received a total of $74,994 from 35 companies across 282 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. Alzate's costs compare to other radiation oncologists in San Diego?
Dr. Alzate's average Medicare payment per service is $49. 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. Alzate) 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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