Medicare Enrolled

Dr. Roque Diaz Wong, M.D.

Internal Medicine · San Antonio, TX
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
Low-engagement
4330 MEDICAL DR STE 105, San Antonio, TX 78229
2106927228
In practice since 2007 (18 years)
NPI: 1477758357 verify on NPPES ↗
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. Diaz Wong 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. Diaz Wong? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Diaz Wong

Dr. Roque Diaz Wong is an internal medicine specialist in San Antonio, TX, with 18 years of NPI registration. Based on federal Medicare data, Dr. Diaz Wong performed 1,432 Medicare services across 536 unique beneficiaries.

Between the years covered by Open Payments, Dr. Diaz Wong received a total of $5,419 from 30 pharmaceutical and/or device companies across 219 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. 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. Diaz Wong is Very 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.

✓ 18 years in practice ▲ Top 25% volume in TX $5,419 industry payments

Medicare Practice Summary

Medicare Utilization ↗
1,432
Medicare services
Top 25% in TX for internal medicine
536
Unique beneficiaries
$87
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~80 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
Hospital follow-up visit, high complexity 521 $91 $297
Hospital follow-up visit, moderate complexity 390 $61 $207
Office visit, established patient (30-39 min) 287 $69 $377
Initial hospital admission, high complexity 98 $129 $575
Dialysis services, 4 or more physician visits per month (20 years or older) 58 $271 $1,047
Initial hospital admission, moderate complexity 38 $101 $387
Hemodialysis, single evaluation 23 $56 $213
Automated urinalysis 17 $2 $8
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 2024 ↗
$5,419
Total received (2018-2024)
Avg $774/year across 7 years
Top 15% in TX for internal medicine
30
Companies
219
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
$4,813 (88.8%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$606 (11.2%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$889
2023
$873
2022
$586
2021
$936
2020
$289
2019
$997
2018
$849

Payments by company (2024)

Consulting
Speaking
Meals & Travel
Research
Veloxis Pharmaceuticals, Inc.
$1,058
Otsuka America Pharmaceutical, Inc.
$619
AstraZeneca Pharmaceuticals LP
$565
Mallinckrodt Hospital Products Inc.
$391
Aurinia Pharma U.S., Inc.
$296
Travere Therapeutics, Inc.
$241
GlaxoSmithKline, LLC.
$219
Mallinckrodt Enterprises LLC
$206
Alexion Pharmaceuticals, Inc.
$196
Horizon Therapeutics plc
$190
Novartis Pharmaceuticals Corporation
$179
Fresenius USA Marketing, Inc.
$175
Amgen Inc.
$155
Relypsa, Inc.
$117
Intercept Pharmaceuticals, Inc.
$100
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$86
Vifor Pharma, Inc.
$82
Bayer Healthcare Pharmaceuticals Inc.
$77
ANI Pharmaceuticals, Inc.
$67
Novo Nordisk Inc
$65
Boehringer Ingelheim Pharmaceuticals, Inc.
$48
Bayer HealthCare Pharmaceuticals Inc.
$47
CALLIDITAS THERAPEUTICS US INC.
$40
Amicus Therapeutics, Inc.
$37
OPKO Pharmaceuticals, LLC
$37
Genentech USA, Inc.
$36
Lilly USA, LLC
$34
Ultragenyx Pharmaceutical Inc.
$20
RECORDATI_RARE_DISEASES_INC.
$19
Merck Sharp & Dohme Corporation
$15
Top 3 companies account for 41.4% of total payments
Associated products mentioned in payments ›
ACTHAR · BENLYSTA · CYSTADROPS · Crysvita · ENVARSUS · EVUSHELD · Envarsus · Envarsus XR (SP) · FARXIGA · Fabhalta · GALAFOLD · JARDIANCE · JYNARQUE · KRYSTEXXA · Kerendia · LOKELMA · LUPKYNIS · OCALIVA · PURIFIED CORTROPHIN GEL · Parsabiv · RAYALDEE · Rituxan · Rivfloza · Rybelsus · SAMSCA · Soliris · TARPEYO · TAVNEOS · TERLIVAZ · TRADJENTA · ULTOMIRIS · Velphoro · Veltassa · XIFAXAN · ZEPATIER
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 (89%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.

Equivalent to $378 per 100 Medicare services performed
Looking for an internal medicine specialist in San Antonio?
Compare internal medicine physicians in the San Antonio area by procedure volume, costs, and industry payment transparency.
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Geographic Context

Internal medicine physicians within 10 mi
1,137
Per 100K population
55.8
County median income
$70,571
Nearest hospital
UNIVERSITY HEALTH SYSTEM
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 measures how much public data is available about a provider — not how good they are. How we calculate this →

Summary

Dr. Diaz Wong is a clinical cardiology specialist, with above-average Medicare volume (top 25% in TX), with low-engagement industry engagement in the top 15% of TX peers, with 18 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. Diaz Wong experienced with hospital follow-up visit, high complexity?
Based on Medicare claims data, Dr. Diaz Wong performed 521 hospital follow-up visit, high complexity 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. Diaz Wong receive payments from pharmaceutical companies?
Yes. Dr. Diaz Wong received a total of $5,419 from 30 companies across 219 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. Diaz Wong's costs compare to other internal medicine physicians in San Antonio?
Dr. Diaz Wong's average Medicare payment per service is $87. 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. Diaz Wong) 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 →