Quick answers
- Does Luis Reyes Mercado accept Medicare assignment?
- Yes. Medicare's clinician data says Luis Reyes Mercado 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 Luis Reyes Mercado see?
- In 2024, CMS data shows 372 Original Medicare patients and 480 services for Luis Reyes Mercado. This counts Original Medicare only and measures volume, not quality.
- What is Luis Reyes Mercado's NPI number?
- 1669676979. 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 Luis Reyes Mercado, 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 | 372 |
|---|---|
| Services billed to Medicare | 480 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)287 services
- Emergency department visit with moderate level of medical decision making (99284)76 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)54 services
- Critical care, first 30-74 minutes (99291)14 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%
- Arthritis52%
- Ischemic heart disease44%
- Depression42%
- Anxiety42%
Hospitals where Luis Reyes Mercado works
Medicare's Facility Affiliation Data lists Luis Reyes Mercado 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.
- Baylor Scott & White Medical Center - Round RockRound Rock, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 670034
- Baylor Scott & White Medical Center- AustinAustin, TX · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 670136
- CHRISTUS Santa Rosa Hospital-San MarcosSan Marcos, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450272
- South Texas Health SystemEdinburg, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450119
- St David's South Austin Medical CenterAustin, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450713
Practice locations
Addresses where Luis Reyes Mercado is enrolled with Medicare (CMS data updated October 2, 2026).
- 244 Creekside XingNew Braunfels, TX 78130 (830) 608‑5600
- 3201 Hwy 71 E, St. David'S BastropBastrop, TX 78602 (512) 308‑5900
- 600 N Union AveNew Braunfels, TX 78130 (830) 606‑9111
Group practices
Medicare enrollment lists Luis Reyes Mercado as a member of these groups (CMS data updated October 2, 2026).
- Longhorn Emergency Medical Associates PA159 clinicians in the group
- Comal Emergency Physicians PLLC91 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in New Braunfels
Clinicians with the same Medicare primary specialty in New Braunfels, TX — not a recommendation.
Other clinicians in Longhorn Emergency Medical Associates PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Central Del Caribe Escuela De Medicina |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669676979 |
| 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