Quick answers
- Does Karla F. Velez Rivera accept Medicare assignment?
- Medicare's clinician data says Karla F. Velez Rivera may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Karla F. Velez Rivera see?
- In 2024, CMS data shows 53 Original Medicare patients and 173 services for Karla F. Velez Rivera. This counts Original Medicare only and measures volume, not quality.
- What is Karla F. Velez Rivera's NPI number?
- 1801039961. 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 Karla F. Velez Rivera, 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 | 53 |
|---|---|
| Services billed to Medicare | 173 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)83 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)17 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%
- Diabetes45%
- Arthritis42%
- Chronic kidney disease40%
- Heart failure34%
Hospitals where Karla F. Velez Rivera works
Medicare's Facility Affiliation Data lists Karla F. Velez Rivera 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.
- Mayaguez Medical Center Dr Ramon Emeterio BetancesMayaguez, PR · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 400103
Practice locations
Addresses where Karla F. Velez Rivera is enrolled with Medicare (CMS data updated October 2, 2026).
- 410 Ave Hostos, Suite 103Mayaguez, PR 00682 (787) 652‑9200
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Mayaguez
Clinicians with the same Medicare primary specialty in Mayaguez, PR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1801039961 |
| 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