Quick answers
- Does Rafael H. Zaragoza Urdaz accept Medicare assignment?
- Yes. Medicare's clinician data says Rafael H. Zaragoza Urdaz 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 Rafael H. Zaragoza Urdaz see?
- In 2024, CMS data shows 65 Original Medicare patients and 2,342 services for Rafael H. Zaragoza Urdaz. This counts Original Medicare only and measures volume, not quality.
- What is Rafael H. Zaragoza Urdaz's NPI number?
- 1023166055. 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 Rafael H. Zaragoza Urdaz, 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 | 65 |
|---|---|
| Services billed to Medicare | 2,342 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Test for allergy using allergenic extract (95004)1,060 services
- Professional service for preparation and provision of 1 or more antigens (95165)847 services
- Professional service for single injection of allergen (95115)87 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)76 services
- Test for allergy using combination of methods with drug or biological (95018)64 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%
- Arthritis57%
- Diabetes55%
- Asthma54%
- Osteoporosis28%
Practice locations
Addresses where Rafael H. Zaragoza Urdaz is enrolled with Medicare (CMS data updated October 2, 2026).
- 317 Ave Manuel DomenechSan Juan, PR 00918 (787) 764‑5715
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in San Juan
Clinicians with the same Medicare primary specialty in San Juan, 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) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023166055 |
| 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