Quick answers
- Does Sandra C. Gracia Lopez accept Medicare assignment?
- Yes. Medicare's clinician data says Sandra C. Gracia Lopez 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 Sandra C. Gracia Lopez see?
- In 2024, CMS data shows 46 Original Medicare patients and 1,034 services for Sandra C. Gracia Lopez. This counts Original Medicare only and measures volume, not quality.
- What is Sandra C. Gracia Lopez's NPI number?
- 1184680480. 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 Sandra C. Gracia Lopez, 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 | 46 |
|---|---|
| Services billed to Medicare | 1,034 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds) (J0153)853 services
- Technetium tc-99m sestamibi, diagnostic, per study dose (A9500)36 services
- Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)18 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician (93015)18 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%
- Diabetes59%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)46%
- Ischemic heart disease39%
- Chronic kidney disease37%
Practice locations
Addresses where Sandra C. Gracia Lopez is enrolled with Medicare (CMS data updated October 2, 2026).
- Km72 Carr, Suite 14Cayey, PR 00736 (787) 738‑2195
Specialties
- Nuclear Medicineprimary
- Internal Medicinealso
Other nuclear medicine doctors in Puerto Rico
Clinicians with the same Medicare primary specialty in Puerto Rico — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ponce School Of Medicine |
| Graduation year | 1981 (45 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184680480 |
| 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