Not Medicare Enrolled

Dr. W. Greif, M.D.

Neuroradiology Physician · San Antonio, TX
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
Low-engagement
8401 DATAPOINT DR, San Antonio, TX 78229
2106167700
In practice since 2006 (20 years)
NPI: 1801863535 verify on NPPES ↗
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. Greif 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. Greif? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Greif

Dr. W. Greif is a neuroradiology physician in San Antonio, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Greif performed 291 Medicare services across 271 unique beneficiaries.

Between the years covered by Open Payments, Dr. Greif received a total of $774 from 3 pharmaceutical and/or device companies across 7 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neuroradiology physician. 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. Greif is High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 20 years in practice ▲ 291 Medicare services $774 industry payments

Medicare Practice Summary

Medicare Utilization ↗
291
Medicare services
Bottom 14% in TX for neuroradiology physician
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
271
Unique beneficiaries
$22
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~15 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
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.
 157 $6 $35
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.
 37 $31 $164
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.
 28 $65 $353
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.
 18 $56 $337
Abdominal X-ray, 1 view
An X-ray image of the abdomen taken from a single angle to visualize internal structures.
 15 $6 $35
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.
 13 $37 $226
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.
 12 $60 $352
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.
 11 $7 $42
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.

Industry Payment Transparency

Open Payments through 2020 ↗
$774
Total received (2019-2020)
Avg $387/year across 2 years
Top 31% in TX for neuroradiology physician
3
Companies
7
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
$774 (100.0%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2020
$146
2019
$628

Payments by company (2020)

Consulting
Speaking
Meals & Travel
Research
Medtronic USA, Inc.
$628
Barco, Inc.
$130
Boston Scientific Corporation
$16
Top 3 companies account for 100.0% of total payments
Associated products mentioned in payments ›
GENERAL - EMBOLICS · KYPHON Balloon Kyphoplasty
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.

Equivalent to $266 per 100 Medicare services performed
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Geographic Context

Neuroradiology physicians within 10 mi
22
Per 100K population
1.1
County median income
$70,571
Nearest hospital
UNIVERSITY HEALTH SYSTEM
0.0 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment — Not enrolled N/A
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments ✓ Open Payments CY 2020
Disciplinary History — Not public N/A

This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This measures how much public data is available about a provider — not how good they are. How we calculate this →

Summary

Dr. Greif is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement, with 20 years of NPI registration.

This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →

Frequently Asked Questions

Is Dr. Greif experienced with chest x-ray, 1 view?
Based on Medicare claims data, Dr. Greif performed 157 chest x-ray, 1 view 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. Greif receive payments from pharmaceutical companies?
Yes. Dr. Greif received a total of $774 from 3 companies across 7 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. Greif's costs compare to other neuroradiology physicians in San Antonio?
Dr. Greif's average Medicare payment per service is $22. 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. Greif) 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. The Transparency Score measures 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

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →