Krystahl Z. Andujar-Rivera, MD
NPI 1902241169ActiveIndividual· Internal Medicine, Nephrology· Carolina, PR
Internal Medicine, Nephrology (MD) in Carolina, Puerto Rico, trained at University Central del Caribe Escuela de Medicina (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $113,150 for 621 claims, against $4,576 paid for services in 2024. Zoll Services LLC (A/K/A Zoll Lifecor Corp) was the largest of 2 companies reporting payments in 2025, $125.17 in all, mostly food and beverage.
Overview
| NPI | 1902241169 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 1, 2013 |
| Last updated in NPPES | Aug 21, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 19880 | PR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 37 across 6 procedure codes |
| Paid by Medicare | $4,576 |
Part D prescriptions in 2024
| Prescriptions (claims) | 621 · 670 30-day fills |
|---|---|
| Patients | 78 |
| Total drug cost | $113,150 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | University Central del Caribe Escuela de Medicina |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Hospital affiliation
- Doctors Center Hospital Carolina LLCCarolina, PR
Other facilities
- Atlantis CarolinaDialysis facility · Carolina, PR
Industry payments (Open Payments)
- 2025$125.17 · 2 payments from 2 companies
- 2024$54.92 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $100.17 | 1 |
| Vifor Pharma, Inc. | $25.00 | 1 |
What the 2025 payments were for
- Food and Beverage$125.17 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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