Quick answers
- Does Karla N. Nieves Borrero accept Medicare assignment?
- Yes. Medicare's clinician data says Karla N. Nieves Borrero 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 Karla N. Nieves Borrero see?
- In 2024, CMS data shows 257 Original Medicare patients and 8,529 services for Karla N. Nieves Borrero. This counts Original Medicare only and measures volume, not quality.
- What is Karla N. Nieves Borrero's NPI number?
- 1720305766. 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 Karla N. Nieves Borrero, 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 | 257 |
|---|---|
| Services billed to Medicare | 8,529 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)95 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)72 services
- Biopsy of large bowel using a flexible endoscope (45380)49 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)49 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)34 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%
- Arthritis45%
- Anxiety32%
- Diabetes31%
- Depression26%
Hospitals where Karla N. Nieves Borrero works
Medicare's Facility Affiliation Data lists Karla N. Nieves Borrero 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.
- Johnston HealthSmithfield, NC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 340090
- Rex HospitalRaleigh, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340114
- Wakemed, Cary HospitalCary, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340173
- Wakemed, Raleigh CampusRaleigh, NC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 340069
- Wilson Medical CenterWilson, NC · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 340126
Practice locations
Addresses where Karla N. Nieves Borrero is enrolled with Medicare (CMS data updated October 2, 2026).
- 3024 New Bern AveRaleigh, NC 27610 (919) 350‑7856
- 530 New Waverly PlCary, NC 27518
Group practices
Medicare enrollment lists Karla N. Nieves Borrero as a member of these groups (CMS data updated October 2, 2026).
- WakeMed Specialists Group LLC876 clinicians in the group
- Raleigh Medical Group PA102 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Raleigh
Clinicians with the same Medicare primary specialty in Raleigh, NC — not a recommendation.
Other clinicians in WakeMed Specialists Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Puerto Rico School Of Medicine |
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720305766 |
| 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