Quick answers
- Does Alfred Valdivieso accept Medicare assignment?
- Yes. Medicare's clinician data says Alfred Valdivieso 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 Alfred Valdivieso see?
- In 2024, CMS data shows 72 Original Medicare patients and 264 services for Alfred Valdivieso. This counts Original Medicare only and measures volume, not quality.
- What is Alfred Valdivieso's NPI number?
- 1811198922. 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 Alfred Valdivieso, 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 | 72 |
|---|---|
| Services billed to Medicare | 264 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)104 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)64 services
- Hospital discharge day management, 30 minutes or less (99238)39 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)15 services
- Emergency department visit with low level of medical decision making (99283)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%
- Arthritis75%
- Diabetes65%
- Chronic kidney disease40%
- Osteoporosis31%
Hospitals where Alfred Valdivieso works
Medicare's Facility Affiliation Data lists Alfred Valdivieso 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.
- Doctors' Center Hospital San JuanSanturce, PR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 400006
Practice locations
Addresses where Alfred Valdivieso is enrolled with Medicare (CMS data updated October 2, 2026).
- 1396 Calle San RafaelSan Juan, PR 00909
- 1396 Calle San Rafael, 5 Medical PavillionSan Juan, PR 00910
- 1396 Calle San Rafael, Suite 5San Juan, PR 00909 (787) 725‑6713
Specialties
- General Practiceprimary
Other general practitioners in San Juan
Clinicians with the same Medicare primary specialty in San Juan, PR — 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) | 1811198922 |
| 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