Medicare Enrolled
Dr. Karl Weingarten, MD
Radiation Oncology · Riverside, CA
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. Weingarten 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. Weingarten
Dr. Karl Weingarten is a radiation oncology specialist in Riverside, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Weingarten performed 52,913 Medicare services across 2,261 unique beneficiaries.
Between the years covered by Open Payments, Dr. Weingarten received a total of $1,637 from 17 pharmaceutical and/or device companies across 53 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. Weingarten 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 2% volume in CA
$1,637 industry payments
Medicare Practice Summary
Medicare Utilization ↗52,913
Medicare services
Top 2% in CA for radiation oncology
2,261
Unique beneficiaries
$39
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~2,785 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. |
48,540 | $0 | $1 |
| Additional blood vessel ultrasound evaluation An ultrasound exam of a blood vessel that includes a radiologist's review. This code applies to each additional vessel evaluated beyond the initial one. |
1,754 | $154 | $487 |
| Ultrasound of blood vessel, initial vessel An ultrasound exam of a blood vessel that includes a radiologist's review of the initial vessel. |
419 | $904 | $2,850 |
| 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. |
360 | $130 | $421 |
| Arterial catheter insertion, first order branch Placement of a catheter into a primary branch of an artery in the chest or arm. |
355 | $563 | $3,051 |
| 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. |
161 | $35 | $113 |
| Injection, alteplase recombinant, 1 mg | 160 | $69 | $221 |
| Hemodialysis circuit intervention with balloon dilation A procedure to insert a needle or tube into a hemodialysis circuit and dilate the dialysis segment using a balloon, with radiological review. |
154 | $1,075 | $3,563 |
| 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. |
152 | $46 | $147 |
| 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. |
150 | $10 | $33 |
| Balloon dilation of dialysis access with radiologist review A minimally invasive procedure to widen a narrowed section of a dialysis access vessel using a balloon catheter. The procedure includes review by a radiologist to ensure proper placement and effectiveness. |
106 | $549 | $1,731 |
| Hemodialysis circuit intervention with stent placement A radiologist inserts a needle or tube into the hemodialysis circuit and places a stent in the dialysis segment while reviewing the procedure. |
101 | $4,063 | $12,838 |
| 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. |
92 | $86 | $297 |
| Needle or tube insertion into hemodialysis circuit with radiologist review A procedure involving the insertion of a needle or tube into a hemodialysis circuit, accompanied by a review of the procedure by a radiologist. |
67 | $353 | $2,071 |
| Permanent blockage of hemodialysis circuit with radiologist review A procedure to permanently close off a hemodialysis circuit, including a review by a radiologist. |
63 | $1,812 | $5,716 |
| Removal of tunneled central venous tube This procedure involves the removal of a catheter that has been surgically placed under the skin and threaded into a large vein. |
54 | $89 | $455 |
| Radiologist review of image for removal of obstructive material A radiologist reviews medical images to assist in the removal of obstructive material. |
53 | $195 | $689 |
| Mechanical removal of obstructive material from central venous tube This procedure involves the mechanical clearing of blockages or debris from a central venous catheter to restore its function. |
51 | $398 | $1,732 |
| Hemodialysis clot removal, balloon dilation, and stent placement This procedure involves removing or dissolving a blood clot within the hemodialysis circuit, dilating the dialysis segment with a balloon, and placing a stent, all under radiological review. |
46 | $5,143 | $16,240 |
| Replacement of tunneled central venous tube This procedure involves replacing an existing tunneled central venous catheter with a new one. The new tube is inserted through the same tunnel under the skin to maintain vascular access. |
28 | $559 | $2,302 |
| Blood clot removal and dissolution from vein A procedure to remove and dissolve a blood clot from a vein using fluoroscopic guidance for the initial treatment. |
18 | $1,455 | $5,012 |
| Dialysis access stent insertion with radiologist review A procedure to place a stent in a dialysis access vessel to maintain blood flow, performed with radiological imaging guidance and review. |
17 | $1,334 | $4,208 |
| 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. |
12 | $695 | $2,437 |
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.
1.1% high complexity
97.2% medium
1.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$1,637
Total received (2018-2024)
Avg $234/year across 7 years
Top 20% in CA for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
17
Companies
53
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
$1,637 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$20
2023
$30
2022
$249
2021
$688
2020
$208
2019
$214
2018
$227
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Tactile Systems Technology Inc
$20
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Cardiovascular Systems Inc.
$855
Endologix, Inc.
$144
LeMaitre Vascular, Inc.
$130
CARDIVA MEDICAL, INC.
$101
Medtronic Vascular, Inc.
$91
BOSTON SCIENTIFIC CORPORATION
$68
Tactile Systems Technology Inc
$50
Bard Peripheral Vascular, Inc.
$43
GUERBET LLC
$30
Medtronic, Inc.
$29
Siemens Medical Solutions USA, Inc.
$17
Smith+Nephew, Inc.
$15
W. L. Gore & Associates, Inc.
$15
Cook Medical LLC
$13
Silk Road Medical, Inc.
$12
Boston Scientific Corporation
$12
Arrow International, Inc.
$11
Top 3 companies account for 69.0% of all-time payments
Associated products mentioned in payments ›
AFX · ANASTOCLIP · ANASTOCLIP GC 8CM (MEDIUM) · CARDIVA VASCADE 5F VCS · Cardiva VASCADE 6/7F VCS · Cardiva VASCADE MVP VVCS 6-12F · Catheter - Arrow · Cook Medical Zilver PTX · Diamondback Peripheral · EKOSONIC · ENROUTE Transcarotid Neuroprotection System · EXCLUDER AAA Endoprosthesis · Endurant · Flexitouch Plus · GENERAL - VASCULAR INTERVENTION · GLIDEPATH · Grafix PL PRIME · HawkOne · KYPHON Balloon Kyphoplasty · Microcatheters · Peripheral Orbital Atherectomy System · RESTOREFLOW · Vascular Closure Device
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.
Geographic Context
Radiation oncologists within 10 mi
195
Per 100K population
8.0
County median income
$89,672
Nearest hospital
PACIFIC GROVE 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. Weingarten is a mixed practice specialist, with above-average Medicare volume (top 2% in CA), with low-engagement industry engagement in the top 20% of CA 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. Weingarten experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Weingarten performed 48,540 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. Weingarten receive payments from pharmaceutical companies?
Yes. Dr. Weingarten received a total of $1,637 from 17 companies across 53 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. Weingarten's costs compare to other radiation oncologists in Riverside?
Dr. Weingarten's average Medicare payment per service is $39. 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. Weingarten) 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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