Quick answers
- Does Mary Gonzales Mercado accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Gonzales 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 Mary Gonzales Mercado see?
- In 2024, CMS data shows 105 Original Medicare patients and 419 services for Mary Gonzales Mercado. This counts Original Medicare only and measures volume, not quality.
- What is Mary Gonzales Mercado's NPI number?
- 1366540023. 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 Mary Gonzales 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 | 105 |
|---|---|
| Services billed to Medicare | 419 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)138 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)66 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)28 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (93296)22 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)13 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%
- Arthritis60%
- Atrial fibrillation47%
- Ischemic heart disease45%
- Heart failure34%
Practice locations
Addresses where Mary Gonzales Mercado is enrolled with Medicare (CMS data updated October 2, 2026).
- 1910 John Ralston Rd, Suite 200Houston, TX 77013 (713) 673‑9000
- 9417 Mesa Dr, Suite AHouston, TX 77028 (713) 848‑7780
Group practices
Medicare enrollment lists Mary Gonzales Mercado as a member of this group (CMS data updated October 2, 2026).
- Centerwell Senior Primary Care TX PA115 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Texas →
Other cardiologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Centerwell Senior Primary Care TX PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366540023 |
| 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
- 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