Quick answers
- Does Jose L. Nieves Rivera accept Medicare assignment?
- Yes. Medicare's clinician data says Jose L. Nieves Rivera 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 Jose L. Nieves Rivera see?
- In 2024, CMS data shows 167 Original Medicare patients and 595 services for Jose L. Nieves Rivera. This counts Original Medicare only and measures volume, not quality.
- What is Jose L. Nieves Rivera's NPI number?
- 1033138607. 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 Jose L. Nieves 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 | 167 |
|---|---|
| Services billed to Medicare | 595 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)165 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)131 services
- Dialysis services, 1 physician visit per month (20 years or older) (90962)84 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)74 services
- Hemodialysis procedure with physician evaluation (90935)44 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%
- Arthritis42%
- Ischemic heart disease36%
Hospitals where Jose L. Nieves Rivera works
Medicare's Facility Affiliation Data lists Jose L. Nieves 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.
- Auxilio Mutuo HospitalSan Juan, PR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 400016
- Hospital San FranciscoSan Juan, PR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 400098
- Presbyterian Community HospitalSan Juan, PR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 400001
Practice locations
Addresses where Jose L. Nieves Rivera is enrolled with Medicare (CMS data updated October 2, 2026).
- 735 Ave Ponce De LeonSan Juan, PR 00917 (787) 765‑3300
- 735 Torre Medica Auxilio Mutuo, Suite 615 Ave Ponce De LeonSan Juan, PR 00917
Group practices
Medicare enrollment lists Jose L. Nieves Rivera as a member of this group (CMS data updated October 2, 2026).
- San Juan Nephrology PSC4 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in San Juan
Clinicians with the same Medicare primary specialty in San Juan, PR — not a recommendation.
Other clinicians in San Juan Nephrology PSC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033138607 |
| 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