Quick answers
- Does Eloy Zamarron Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Eloy Zamarron Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Eloy Zamarron Jr. see?
- In 2024, CMS data shows 97 Original Medicare patients and 1,387 services for Eloy Zamarron Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Eloy Zamarron Jr.'s NPI number?
- 1336227867. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Eloy Zamarron Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 97 |
|---|---|
| Services billed to Medicare | 1,387 |
| Different services or procedures | 57 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)299 services
- Blood test, basic group of blood chemicals (calcium, total) (80048)103 services
- Blood test, lipids (cholesterol and triglycerides) (80061)103 services
- Liver function blood test panel (80076)101 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)96 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes66%
- Arthritis56%
- Chronic kidney disease29%
- Ischemic heart disease25%
Hospitals where Eloy Zamarron Jr. works
Medicare's Facility Affiliation Data lists Eloy Zamarron Jr. at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Doctors Hospital of LaredoLaredo, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450643
- Laredo Medical CenterLaredo, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450029
Practice locations
Addresses where Eloy Zamarron Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 6801 McPherson Rd, Suite 109Laredo, TX 78041 (956) 728‑0323
Group practices
Medicare enrollment lists Eloy Zamarron Jr. as a member of this group (CMS data updated October 2, 2026).
- Monzer H Yazji MD and Associates PLLC80 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Laredo
Clinicians with the same Medicare primary specialty in Laredo, TX — not a recommendation.
Other clinicians in Monzer H Yazji MD and Associates PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1981 (45 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1336227867 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians