Medicare Enrolled

Dr. Michael Nunez, M.D.

Gastroenterology · Dallas, TX
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
8230 WALNUT HILL LN, Dallas, TX 75231
2143457398
Registered in NPPES since 2006
NPI: 1669413019 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. Nunez 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. Nunez

Dr. Michael Nunez is a gastroenterology specialist in Dallas, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Nunez performed 852 Medicare services in 2023. These records do not provide a deduplicated patient total.

Between the years covered by Open Payments, Dr. Nunez received a total of $3,452 from 25 pharmaceutical and/or device companies across 188 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Nunez 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 of NPI registration ▲ Top 32% volume in TX $3,452 industry payments

Medicare Practice Summary — 2023

Medicare Utilization ↗
852
Medicare services
Top 32% in TX for gastroenterology
Not available
Unique patients (not deduplicated)
$101
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →

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
Colonoscopy with biopsy
A procedure to collect tissue samples from the large intestine using a flexible tube with a camera. The samples are examined to check for abnormalities or disease.
162 $81 $847
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.
150 $89 $217
Colon polyp removal with endoscopic snare
This procedure removes polyps or growths from the large bowel using a flexible tube with a camera and a wire loop tool. The snare is used to cut off the growths during the examination.
134 $206 $1,067
Upper GI endoscopy with biopsy
A procedure to collect tissue samples from the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The samples are examined to check for abnormalities.
125 $66 $680
Office visit, established patient (20-29 min)
An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition.
83 $65 $148
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.
70 $113 $332
Dilation of esophagus 44 $31 $334
New patient office visit (30-44 min)
An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range.
28 $82 $219
Colonoscopy for colorectal cancer screening, high risk
A colonoscopy performed to screen for colorectal cancer in individuals identified as being at high risk for the disease.
25 $174 $778
Intravenous chemotherapy infusion, 1 hour or less
Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete.
17 $105 $563
New patient office visit, 15-29 minutes
An initial office visit for a new patient lasting 15 to 29 minutes. This code is used when the total time spent on the date of the encounter meets this duration threshold.
14 $52 $155
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. These counts do not measure clinical quality or years of experience.
2.0% high complexity
36.6% medium
61.4% routine

Industry Payment Transparency

Open Payments through 2024 ↗
$3,452
Total received (2018-2024)
Avg $493/year across 7 years
Top 48% in TX for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
25
Companies
188
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →

Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$823
2023
$593
2022
$752
2021
$437
2020
$79
2019
$183
2018
$584

Payments by company (2024)

ABBVIE INC.
$435
PFIZER INC.
$171
Takeda Pharmaceuticals U.S.A., Inc.
$128
Lilly USA, LLC
$54
Janssen Biotech, Inc.
$35
Top 3 companies account for 89.2% of 2024 payments
All-time payments by company (2018-2024) ›
ABBVIE INC.
$853
Takeda Pharmaceuticals U.S.A., Inc.
$694
PFIZER INC.
$534
AbbVie, Inc.
$181
Merck Sharp & Dohme LLC
$165
AbbVie Inc.
$161
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$137
Ferring Pharmaceuticals Inc.
$106
UCB, Inc.
$94
Covidien LP
$93
Lilly USA, LLC
$54
Allergan Inc.
$52
Celgene Corporation
$47
Janssen Biotech, Inc.
$47
Merck Sharp & Dohme Corporation
$38
Ironwood Pharmaceuticals, Inc
$36
Siemens Medical Solutions USA, Inc.
$27
Ardelyx, Inc.
$21
Regeneron Healthcare Solutions, Inc.
$21
RedHill Biopharma Inc.
$20
Daiichi Sankyo Inc.
$16
Alfasigma USA, Inc.
$14
Allergan, Inc.
$14
Shionogi Inc
$14
Braintree Laboratories, Inc.
$13
Top 3 companies account for 60.3% of all-time payments
Associated products mentioned in payments ›
CIMZIA · CLENPIQ · CREON · Cimzia · Creon · DIFICID · DUPIXENT · ENTYVIO · EOHILIA · Entyvio · GATTEX · HUMIRA · Humira · IBSRELA · INFLECTRA · INJECTAFER · LINZESS · Linzess · Mavyret · Molecular Accessories · Molecular Reagents/Test Kit/Clinical Utilization · OMVOH · RINVOQ · SKYRIZI · STELARA · SUTAB · Symproic · TRULANCE · Talicia · UCERIS TABLETS · VELSIPITY · VIBERZI · XELJANZ · XIFAXAN
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Looking for a gastroenterology specialist in Dallas?
Compare gastroenterologists in the Dallas area by procedure volume, costs, and industry payment transparency.
Browse gastroenterologists nearby

Geographic Context

Gastroenterologists in nearby ZIP areas
251
County median income
$74,149
Nearest hospital to ZIP centroid (approximate)
TEXAS HEALTH PRESBYTERIAN HOSPITAL DALLAS
0.0 mi

Data Sources

Provider Registry NPPES NPPES snapshot; verify current record
Medicare Enrollment PECOS PECOS snapshot
Practice Data Medicare Util. Annual (CY lag)
Industry Payments Open Payments CY 2024
Disciplinary History — Not included 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. Nunez is a clinical cardiology specialist, with moderate Medicare volume, 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. Nunez experienced with colonoscopy with biopsy?
Based on Medicare claims data, Dr. Nunez performed 162 colonoscopy with biopsy services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Nunez receive payments from pharmaceutical companies?
Yes. Dr. Nunez received a total of $3,452 from 25 companies across 188 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Nunez's costs compare to other gastroenterologists in Dallas?
Dr. Nunez's average Medicare payment per service is $101. 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. Nunez) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
About this page

This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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.

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. Industry payment disclosure alone establishes neither wrongdoing nor legality. 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 →