Mary Jane Fronda Castillo, MSN, CRNP
NPI 1508357104ActiveIndividual· Nurse Practitioner· Brick, NJ
Nurse Practitioner (MSN, CRNP) with Northeast Kidney Care LLC, practicing in Brick, New Jersey. Their prescriptions cost Medicare Part D more than their services did: $299,685 for 661 claims, against $14,557 paid for services in 2024. Ardelyx, Inc. reported $117.63 in payments in 2025, mostly food and beverage. Lists Community Medical Center as a hospital affiliation.
Overview
| NPI | 1508357104 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MSN, CRNP |
| Sole proprietor | No |
| NPI issued | May 20, 2018 |
| Last updated in NPPES | Aug 29, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 26NJ00810600 | NJ |
| Nurse Practitioner, Gerontology | 363LG0600X | 26NJ00810600 | NJ |
| Nurse Practitioner, Primary Care | 363LP2300X | 26NJ00810600 | NJ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 57 |
|---|---|
| Services billed | 187 across 11 procedure codes |
| Paid by Medicare | $14,557 |
Part D prescriptions in 2024
| Prescriptions (claims) | 661 · 1,178 30-day fills |
|---|---|
| Patients | 80 |
| Total drug cost | $299,685 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Northeast Kidney Care LLCManahawkin, NJ · 67 clinicians
Hospital affiliation
- Community Medical CenterToms River, NJ
Industry payments (Open Payments)
- 2025$117.63 · 1 payment from 1 company
- 2024$128.27 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $117.63 | 1 |
What the 2025 payments were for
- Food and Beverage$117.63 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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