Quick answers
- Does Maria Marti Lon accept Medicare assignment?
- Yes. Medicare's clinician data says Maria Marti Lon 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 Maria Marti Lon see?
- In 2024, CMS data shows 59 Original Medicare patients and 649 services for Maria Marti Lon. This counts Original Medicare only and measures volume, not quality.
- What is Maria Marti Lon's NPI number?
- 1740287762. 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 Maria Marti Lon, 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 | 59 |
|---|---|
| Services billed to Medicare | 649 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)203 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)193 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)63 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)55 services
- Ultrasound of both sides of head and neck blood flow (93880)47 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%
- Diabetes75%
- Chronic kidney disease75%
- Heart failure49%
- Arthritis34%
Practice locations
Addresses where Maria Marti Lon is enrolled with Medicare (CMS data updated October 2, 2026).
- 10 Calle AcostaCaguas, PR 00725 (787) 746‑2858
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Puerto Rico →
Other cardiologists in Caguas
Clinicians with the same Medicare primary specialty in Caguas, PR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Puerto Rico School Of Medicine |
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740287762 |
| 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