Quick answers
- Does Cristy G. Martinez Lopez accept Medicare assignment?
- Yes. Medicare's clinician data says Cristy G. Martinez 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 Cristy G. Martinez Lopez see?
- In 2024, CMS data shows 19 Original Medicare patients and 109 services for Cristy G. Martinez Lopez. This counts Original Medicare only and measures volume, not quality.
- What is Cristy G. Martinez Lopez's NPI number?
- 1023262110. 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 Cristy G. Martinez 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 | 19 |
|---|---|
| Services billed to Medicare | 109 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)52 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%
- Chronic kidney disease74%
- Diabetes63%
Hospitals where Cristy G. Martinez Lopez works
Medicare's Facility Affiliation Data lists Cristy G. Martinez Lopez 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 BayamonBayamon, PR · Acute Care Hospital · Emergency services: listed by Medicare · CCN 400102
Practice locations
Addresses where Cristy G. Martinez Lopez is enrolled with Medicare (CMS data updated October 2, 2026).
- 9 J St Ext Hermanas DavilaBayamon, PR 00959
- Calle, Suite 41Bayamon, PR 00956 (787) 523‑1417
- Carr 167Toa Baja, PR 00949
- Road 164 Km, 9 Achiote WardNaranjito, PR 00719 (787) 869‑0622
Specialties
- Nephrologyprimary
Other nephrologists in Bayamon
Clinicians with the same Medicare primary specialty in Bayamon, PR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023262110 |
| 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