Brian Ayuste, MD

1 location · Renal Consultants Medical Group · 9 clinicians in this group

Hospitals listed: 052778 · 552778 · 552853 · Henry Mayo Newhall Hospital · Providence Holy Cross Medical Center. That is not proof they admit you there this week.

Licence A99851 · Current

Licensed to practise in California · since 2007 · expires 2027-05-31 · Loyola University of Chicago Stritch School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

• American Board of Internal Medicine - Internal Medicine
• American Board of Internal Medicine - Nephrology

2 hospitals

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

• Henry Mayo Newhall HospitalValencia, CAAcute Care Hospital · Voluntary non-profit - Private · No emergency department · Birthing-friendlyPatients rate it 3 of 5 · 67% would definitely recommend it
  Overall rating: 2 of 5 starsWorse than the national rate — Pressure ulcer rate: 1.42 (0.65 to 2.18) · 4,172 cases, Jul 2022 – Jun 2024Better than the national rate — Clostridium Difficile (C.Diff): 0.206, Oct 2024 – Sep 2025
• Providence Holy Cross Medical CenterMission Hills, CAAcute Care Hospital · Voluntary non-profit - Church · Has an emergency department · Birthing-friendlyPart of Providence, which runs 54 hospitals in 7 statesPatients rate it 3 of 5 · 78% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.404, Oct 2024 – Sep 2025

$438,918

Medicare paid this office $438,918 for 498 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Who their Medicare patients are

498 Original Medicare patients in 2024. Average age 74 · Under 65 16% · 85 and older 19% · Women 48% · Also on Medicaid 62% · Health risk score 4.59. Above the middle of the specialty; the typical nephrology clinician is at 4.01.

Conditions among them: High blood pressure 75% · Diabetes 75% · Chronic kidney disease 75% · Heart failure 63% · Coronary heart disease 55% · Depression 37% · Atrial fibrillation 31% · COPD 30% · Stroke 23% · Dementia 22% · Cancer 17%.

The office billed $1,092,849, Medicare allowed $566,781 and paid $438,918; for 5,177 services of 29 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

$36,797 in 2024

Medicaid paid $36,797 for 947 billed services this clinician did in 2024, up to 37 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

$573,690

Pharmacies billed $573,690 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

2,440 generic and 469 brand-name prescriptions · $573,690 in drug cost · 46 antibiotic prescriptions to 32 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Year by year

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

$1,480 in 2025

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.