Martha Y. Guardia, APN
NPI 1922791599ActiveIndividual· Nurse Practitioner, Gerontology· Wayne, NJ
Nurse Practitioner, Gerontology (APN) with North Jersey Nephrology Assoc. PA, practicing in Wayne, New Jersey. Their prescriptions cost Medicare Part D more than their services did: $56,091 for 366 claims, against $17,314 paid for services in 2024. Ardelyx, Inc. was the largest of 2 companies reporting payments in 2025, $182.96 in all, mostly food and beverage. Lists St Joseph's University Medical Center Inc as a hospital affiliation.
Overview
| NPI | 1922791599 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APN |
| Sole proprietor | Yes |
| NPI issued | May 31, 2023 |
| Last updated in NPPES | Jul 25, 2023 |
| Certified by provider | Jul 25, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | 26NJ01474700 | NJ |
| Nurse Practitioner, Primary Care | 363LP2300X | 26NJ01474700 | NJ |
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 - Nurse Practitioner (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 83 |
|---|---|
| Services billed | 255 across 10 procedure codes |
| Paid by Medicare | $17,314 |
Part D prescriptions in 2024
| Prescriptions (claims) | 366 · 655 30-day fills |
|---|---|
| Patients | 134 |
| Total drug cost | $56,091 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- North Jersey Nephrology Assoc. PAWayne, NJ · 16 clinicians
Hospital affiliation
- St Joseph's University Medical Center IncPaterson, NJ
Industry payments (Open Payments)
- 2025$182.96 · 2 payments from 2 companies
- 2024$59.88 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $132.96 | 1 |
| Vantive US Healthcare LLC | $50.00 | 1 |
What the 2025 payments were for
- Food and Beverage$182.96 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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