Maria Concepcion V Delcastillo, M.D.
NPI 1467572537ActiveIndividual· Internal Medicine, Nephrology· Amherst, NY
Internal Medicine, Nephrology (M.D.) with Nephrology Associates of Western New York, LLP, practicing in Amherst, New York. 254 Medicare patients in 2024, $110,334 paid; nearly all of their 1,309 Part D prescriptions were generic (92%). Travere Therapeutics, Inc. was the largest of 2 companies reporting payments in 2025, $123.54 in all, mostly education. Lists Brooks-Tlc Hospital System, Inc and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1467572537 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 30, 2007 |
| Last updated in NPPES | Aug 19, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 192766 | NY |
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 - Nephrology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 254 |
|---|---|
| Services billed | 1,315 across 29 procedure codes |
| Paid by Medicare | $110,334 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,309 · 2,950 30-day fills |
|---|---|
| Patients | 231 |
| Total drug cost | $91,484 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Nephrology |
Medical group
- Nephrology Associates of Western New York, LLPAmherst, NY · 15 clinicians
Hospital affiliations
- Brooks-Tlc Hospital System, IncDunkirk, NY
- Kaleida HealthBuffalo, NY
- Kenmore Mercy HospitalKenmore, NY
- Mercy Hospital of BuffaloBuffalo, NY
- Sisters of Charity HospitalBuffalo, NY
Other facilities
- Usrc Cheektowaga DialysisDialysis facility · Cheektowaga, NY
- Usrc Tonawanda DialysisDialysis facility · Tonawanda, NY
Industry payments (Open Payments)
- 2025$123.54 · 26 payments from 2 companies
- 2024$111.94 · 7 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $95.48 | 25 |
| Ardelyx, Inc. | $28.06 | 1 |
What the 2025 payments were for
- Education$67.10 · 22 payments
- Food and Beverage$56.44 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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