Medicare Enrolled
Dr. Eloy Zamarron, M.D.
Family Medicine · Laredo, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Zamarron 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. Zamarron
Dr. Eloy Zamarron is a family medicine specialist in Laredo, TX, with 19 years of NPI registration. Based on federal Medicare data, Dr. Zamarron performed 2,002 Medicare services across 1,429 unique beneficiaries.
Between the years covered by Open Payments, Dr. Zamarron received a total of $2,532 from 21 pharmaceutical and/or device companies across 59 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in family 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. Zamarron 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.
✓ 19 years in practice
▲ Top 14% volume in TX
$2,532 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,002
Medicare services
Top 14% in TX for family medicine
1,429
Unique beneficiaries
$46
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~105 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 |
|---|---|---|---|
| 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. |
546 | $85 | $253 |
| 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. |
128 | $63 | $176 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
103 | $13 | $37 |
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
101 | $2 | $26 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
77 | $8 | $36 |
| Respiratory virus detection test A laboratory test using immunoassay techniques to detect the presence of severe acute respiratory syndrome coronavirus and influenza viruses. |
75 | $66 | $156 |
| Liver function blood test panel | 73 | $8 | $34 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
70 | $72 | $171 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
66 | $16 | $75 |
| Annual alcohol misuse screening, 5 to 15 minutes | 60 | $18 | $38 |
| Annual depression screening | 58 | $18 | $38 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
55 | $8 | $22 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
53 | $29 | $78 |
| Strep A rapid test A rapid test to detect Group A Streptococcus bacteria using an immunoassay method with direct visual observation. |
48 | $16 | $39 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
47 | $113 | $250 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
43 | $10 | $41 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
40 | $30 | $48 |
| Blood glucose test using hand-held instrument A test that measures the level of sugar in the blood using a portable device. The result helps monitor blood glucose levels. |
35 | $3 | $7 |
| Nursing facility visit, low complexity A daily follow-up visit for an existing patient in a nursing facility involving straightforward medical decision making. The visit requires at least 15 minutes of time if time is used to determine the level of care. |
35 | $57 | $159 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
34 | $117 | $367 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
31 | $10 | $35 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
29 | $72 | $100 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
28 | $9 | $41 |
| Complete blood count (CBC), automated An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood. |
25 | $6 | $20 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
24 | $9 | $50 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
21 | $3 | $7 |
| 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. |
19 | $100 | $334 |
| SARS-CoV-2 immunoassay test A laboratory test using immunoassay techniques to detect the presence of severe acute respiratory syndrome coronavirus. |
16 | $35 | $92 |
| 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. |
14 | $15 | $51 |
| Retinal photography (fundus photo) This procedure involves taking photographs of the retina, the light-sensitive tissue at the back of the eye. It is used to document the condition of the eye's interior structures. |
14 | $26 | $90 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
12 | $10 | $45 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
11 | $8 | $12 |
| Quadrivalent influenza vaccine, preservative-free A flu shot containing four strains of the influenza virus, formulated without preservatives, administered in a 0.5 ml dose. |
11 | $21 | $40 |
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 ↗$2,532
Total received (2018-2024)
Avg $362/year across 7 years
Top 23% in TX for family medicine
21
Companies
59
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
$2,505 (98.9%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$27 (1.1%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$255
2023
$327
2022
$442
2021
$451
2020
$44
2019
$621
2018
$393
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
AstraZeneca Pharmaceuticals LP
$442
Novo Nordisk Inc
$430
Melinta Therapeutics, Inc.
$337
AbbVie Inc.
$204
Amgen Inc.
$178
Bayer HealthCare Pharmaceuticals Inc.
$133
Lilly USA, LLC
$125
Madrigal Pharmaceuticals
$113
Sonex Health, Inc.
$105
ABBVIE INC.
$93
Mallinckrodt Hospital Products Inc.
$75
Merck Sharp & Dohme Corporation
$61
Alexion Pharmaceuticals, Inc.
$40
Amarin Pharma Inc.
$40
Corcept Therapeutics
$36
Otsuka America Pharmaceutical, Inc.
$28
Daiichi Sankyo Inc.
$22
Boehringer Ingelheim Pharmaceuticals, Inc.
$21
Nestle HealthCare Nutrition Inc.
$18
Melinta Therapeutics, LLC
$17
Eisai Inc.
$12
Top 3 companies account for 47.7% of total payments
Associated products mentioned in payments ›
AIRSUPRA · ANDEXXA · BREZTRI AEROSPHERE · Baxdela · Dayvigo · FARXIGA · INJECTAFER · JANUVIA · JARDIANCE · Kerendia · Korlym · LOKELMA · MOUNJARO · Orbactiv · Otezla · Ozempic · REXULTI · REZDIFFRA · Repatha · Rybelsus · STIOLTO RESPIMAT · SX-ONE MICROKNIFE · TERLIVAZ · Tresiba · VRAYLAR · Vabomere · Vascepa · ZENPEP
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 (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Equivalent to $126 per 100 Medicare services performed
Geographic Context
Family medicine physicians within 10 mi
57
Per 100K population
21.3
County median income
$62,506
Nearest hospital
DOCTORS HOSPITAL OF LAREDO
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 measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Zamarron is a clinical cardiology specialist, with above-average Medicare volume (top 14% in TX), with low-engagement industry engagement, with 19 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. Zamarron experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Zamarron performed 546 office visit, established patient (30-39 min) 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. Zamarron receive payments from pharmaceutical companies?
Yes. Dr. Zamarron received a total of $2,532 from 21 companies across 59 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. Zamarron's costs compare to other family medicine physicians in Laredo?
Dr. Zamarron's average Medicare payment per service is $46. 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. Zamarron) 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.
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