Quick answers
- Does Gabriel N. Contreras accept Medicare assignment?
- Yes. Medicare's clinician data says Gabriel N. Contreras 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 Gabriel N. Contreras see?
- In 2024, CMS data shows 306 Original Medicare patients and 952 services for Gabriel N. Contreras. This counts Original Medicare only and measures volume, not quality.
- What is Gabriel N. Contreras's NPI number?
- 1891723383. 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 Gabriel N. Contreras, 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 | 306 |
|---|---|
| Services billed to Medicare | 952 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)141 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)126 services
- Critical care, first 30-74 minutes (99291)101 services
- Hemodialysis procedure with physician evaluation (90935)83 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)80 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%
- Chronic kidney disease75%
- Diabetes57%
- Ischemic heart disease55%
- Heart failure48%
Hospitals where Gabriel N. Contreras works
Medicare's Facility Affiliation Data lists Gabriel N. Contreras 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.
- Jackson Health SystemMiami, FL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 100022
Practice locations
Addresses where Gabriel N. Contreras is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 52; the Medicare profile lists all.
Group practices
Medicare enrollment lists Gabriel N. Contreras as a member of this group (CMS data updated October 2, 2026).
- University of Miami2,377 clinicians in the group
Specialties
- Nephrologyprimary
- Critical Care (Intensivists)also
- Internal Medicinealso
Other nephrologists in Florida
Clinicians with the same Medicare primary specialty in Florida — not a recommendation.
Other clinicians in University of Miami
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1989 (37 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) | 1891723383 |
| 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