Medicare Enrolled
Dr. Gregory Shaw, M.D.
Vascular & Interventional Radiology Physician · Redding, 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. Shaw 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. Shaw
Dr. Gregory Shaw is a vascular & interventional radiology physician in Redding, CA, with 14 years of NPI registration. Based on federal Medicare data, Dr. Shaw performed 3,143 Medicare services across 1,168 unique beneficiaries.
Between the years covered by Open Payments, Dr. Shaw received a total of $20,589 from 16 pharmaceutical and/or device companies across 141 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in vascular & interventional radiology physician. 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. Shaw 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.
✓ 14 years in practice
▲ Top 19% volume in CA
$20,589 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,143
Medicare services
Top 19% in CA for vascular & interventional radiology physician
1,168
Unique beneficiaries
$49
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~224 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. |
1,671 | $0 | $1 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
178 | $83 | $802 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
145 | $95 | $243 |
| Abdominal fluid drainage with imaging guidance Removal of fluid from the abdominal cavity using imaging technology to guide the procedure. |
106 | $81 | $850 |
| Contrast dye for imaging, lower concentration | 79 | $0 | $3 |
| 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. |
59 | $146 | $469 |
| Ultrasound of leg arteries or grafts An ultrasound exam that uses sound waves to create images of the arteries in one leg or any grafts present in that leg. |
54 | $17 | $69 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
49 | $96 | $136 |
| Midazolam injection, per 1 mg Administration of midazolam hydrochloride, a sedative medication, measured in 1 mg increments. |
47 | $0 | $5 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
46 | $58 | $294 |
| Ultrasound-guided fine needle aspiration biopsy, first lesion A biopsy procedure where a thin needle is used to collect tissue samples from a growth, guided by ultrasound imaging. This code applies to the first lesion or mass sampled during the session. |
37 | $55 | $300 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
37 | $191 | $738 |
| 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. |
36 | $821 | $3,442 |
| 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 | $85 | $183 |
| 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. |
36 | $9 | $31 |
| 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. |
35 | $88 | $347 |
| 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. |
35 | $42 | $150 |
| 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. |
34 | $196 | $1,102 |
| Injection, fentanyl citrate, 0.1 mg | 34 | $1 | $5 |
| 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. |
32 | $20 | $87 |
| 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. |
30 | $11 | $52 |
| 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. |
30 | $152 | $523 |
| 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. |
23 | $22 | $98 |
| 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. |
22 | $119 | $350 |
| Esophagram with single contrast An X-ray of the esophagus using a single type of contrast material to visualize the structure and function of the upper digestive tract. |
21 | $21 | $76 |
| 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. |
21 | $64 | $186 |
| Chest fluid drainage with tube insertion using imaging guidance This procedure removes fluid from the chest cavity and places a tube to stay in place for ongoing drainage. Imaging guidance is used to help position the tube accurately. |
20 | $114 | $1,495 |
| Lumbar puncture with imaging guidance A procedure to remove spinal fluid from the lower back for diagnostic testing, performed using imaging guidance. |
19 | $68 | $300 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
19 | $54 | $190 |
| 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. |
18 | $97 | $219 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
16 | $24 | $122 |
| Swallowing function imaging Imaging used to evaluate how well a person can swallow. This procedure visualizes the swallowing process to assess function. |
15 | $19 | $87 |
| 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. |
14 | $104 | $487 |
| X-ray of surgical specimen | 14 | $12 | $28 |
| Ultrasound of aorta, vena cava, groin vessels or bypass grafts This procedure uses sound waves to create images of the aorta, vena cava, groin vessels, or bypass grafts. It allows for the visualization of these blood vessels and any surgical grafts. |
14 | $83 | $372 |
| Chemical destruction of first incompetent vein with imaging guidance This procedure uses imaging guidance to chemically destroy the first incompetent vein in the arm or leg. |
13 | $1,674 | $3,500 |
| Liver needle biopsy through skin A procedure in which a needle is inserted through the skin to remove a small sample of liver tissue for examination. |
13 | $69 | $331 |
| Ultrasound scan of chest An imaging test that uses sound waves to create pictures of the structures inside the chest. |
12 | $22 | $91 |
| New patient office visit, complex (60-74 min) | 12 | $182 | $285 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
11 | $129 | $226 |
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
83.2% medium
15.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$20,589
Total received (2018-2024)
Avg $2,941/year across 7 years
Top 18% in CA for vascular & interventional radiology physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
16
Companies
141
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
$15,917 (77.3%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$4,672 (22.7%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,581
2023
$1,593
2022
$13,919
2021
$668
2020
$424
2019
$806
2018
$598
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
AngioDynamics, Inc.
$2,333
Inari Medical, Inc.
$154
Boston Scientific Corporation
$32
ShockWave Medical, Inc
$28
Medtronic, Inc.
$18
Bard Peripheral Vascular, Inc.
$15
Top 3 companies account for 97.6% of 2024 payments
All-time payments by company (2018-2024) ›
AngioDynamics, Inc.
$16,005
Inari Medical, Inc.
$2,310
Bard Peripheral Vascular, Inc.
$543
Medtronic Vascular, Inc.
$484
Medical Device Business Services, Inc.
$438
BARD PERIPHERAL VASCULAR, INC.
$263
BOSTON SCIENTIFIC CORPORATION
$119
Boston Scientific Corporation
$106
Medtronic, Inc.
$78
EKOS Corporation
$74
Cardiovascular Systems Inc.
$51
Stryker Corporation
$43
ShockWave Medical, Inc
$28
Penumbra, Inc.
$18
Covidien LP
$16
Terumo Medical Corporation
$13
Top 3 companies account for 91.6% of all-time payments
Associated products mentioned in payments ›
ABRE · AUTOPLEX · Abre · AngioSeal · Auryon Laser System 100-120 Vac · CERTUS 140 MICROWAVE ABLATION SYSTEM · COVERA · CT THROMBECTOMY SYSTEM KIT · Diamondback Peripheral · E-LUMINEXX · EKOSONIC · FLOWTRIEVER CATHETER · FlowTriever · GENERAL VASCULAR INTERVENTION · HawkOne · IN.PACT Admiral · IVS - VERTEBRAL AUGMENTATION PRODUCTS · LIFESTENT · LIFESTREAM · LITHOVUE · LUTONIX · NANOCROSS ELITE · Penumbra System · Peripheral Orbital Atherectomy System · S · SPIDERFX · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · Solero · TOTAL ABSCESSION · ULTRASCORE · VENOVO · 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 →
Payments are distributed across multiple categories with no single dominant type.
Geographic Context
Vascular & interventional radiology physicians within 10 mi
4
Per 100K population
2.2
County median income
$71,931
Nearest hospital
MERCY MEDICAL CENTER REDDING
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. Shaw is a mixed practice specialist, with above-average Medicare volume (top 19% in CA), with mixed engagement industry engagement in the top 18% of CA peers.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Shaw experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Shaw performed 1,671 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. Shaw receive payments from pharmaceutical companies?
Yes. Dr. Shaw received a total of $20,589 from 16 companies across 141 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. Shaw's costs compare to other vascular & interventional radiology physicians in Redding?
Dr. Shaw'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. Shaw) 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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