Brian Barrios Ayuste, M.D.
NPI 1104003458ActiveIndividual· Internal Medicine· Granada Hills, CA
Internal Medicine (M.D.) in Granada Hills, California, trained at Loyola University of Chicago, Stritch School of Medicine (class of 2005). In 2024 Medicare paid $438,918 for 498 patients, and Part D covered 2,921 of their prescriptions, 84% of them generic. Amgen Inc. was the largest of 17 companies reporting payments in 2025, $1,480 in all, mostly food and beverage.
Overview
| NPI | 1104003458 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 29, 2008 |
| Last updated in NPPES | Jan 28, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A99851 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 498 |
|---|---|
| Services billed | 5,177 across 29 procedure codes |
| Paid by Medicare | $438,918 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,921 · 6,236 30-day fills |
|---|---|
| Patients | 339 |
| Total drug cost | $573,690 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Renal Consultants Medical GroupGranada Hills, CA · 9 clinicians
Hospital affiliations
- Henry Mayo Newhall HospitalValencia, CA
- Providence Holy Cross Medical CenterMission Hills, CA
Other facilities
- Northridge Dialysis CenterDialysis facility · Northridge, CA
- Northridge Kidney Care CenterDialysis facility · Northridge, CA
- Santa Clarita Kidney CenterDialysis facility · Valencia, CA
- Sylmar Dialysis CenterDialysis facility · Sylmar, CA
Industry payments (Open Payments)
- 2025$1,480 · 78 payments from 17 companies
- 2024$1,391 · 60 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $309.09 | 18 |
| Astrazeneca Pharmaceuticals LP | $147.51 | 12 |
| Novartis Pharmaceuticals Corporation | $143.97 | 9 |
| Otsuka America Pharmaceutical, Inc. | $143.13 | 6 |
| Calliditas Therapeutics US Inc. | $104.70 | 4 |
What the 2025 payments were for
- Food and Beverage$1,463 · 76 payments
- Education$17.07 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Granada Hills
- 1174718134
- 1316145956
- 1679830756
- 1053256040
- 1679271704
- 1689473878
- 1740635291
- 1922401215
- 1942544648