Ziyad A Ayyoub, MD

2 locations

Hospitals listed: Lac/Rancho Los Amigos National Rehabilitation Ctr · Pih Health Downey Hospital · Saint Francis Medical Center · Whittier Hospital Medical Center. That is not proof they admit you there this week.

Licence A53397 · Current

Licensed to practise in California · since 1994 · expires 2027-12-31 · Minsk Medical Institute.

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

4 hospitals

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

• Lac/Rancho Los Amigos National Rehabilitation CtrDowney, CAAcute Care Hospital · Government - Local · No emergency departmentPart of Los Angeles County Department of Health Services, which runs 4 hospitalsPatients rate it 3 of 5 · 76% would definitely recommend it
  Overall rating: 3 of 5 starsWorse than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 4.73, Oct 2024 – Sep 2025
• Pih Health Downey HospitalDowney, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of PIH Health, which runs 3 hospitalsPatients rate it 3 of 5 · 73% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.157, Oct 2024 – Sep 2025
• Saint Francis Medical CenterLynwood, CAAcute Care Hospital · Voluntary non-profit - Church · No emergency department · Birthing-friendlyPart of Prime Healthcare Services, which runs 45 hospitals in 14 statesPatients rate it 2 of 5 · 62% would definitely recommend it
  Overall rating: 3 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.228, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.055, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0, Oct 2024 – Sep 2025
• Whittier Hospital Medical CenterWhittier, CAAcute Care Hospital · Proprietary · Has an emergency department · Birthing-friendlyPatients rate it 2 of 5 · 60% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.265, Oct 2024 – Sep 2025

$483,015

Medicare paid this office $483,015 for 362 people.

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

Procedures year by year

Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.

Who their Medicare patients are

362 Original Medicare patients in 2024. Average age 72 · Under 65 21% · 85 and older 18% · Women 53% · Also on Medicaid 80% · Health risk score 4.39. Sicker patients than 9 in 10 peers; the typical physical medicine and rehabilitation clinician is at 1.53.

Conditions among them: High blood pressure 75% · Diabetes 75% · Heart failure 72% · Chronic kidney disease 68% · Depression 57% · Coronary heart disease 54% · COPD 49% · Atrial fibrillation 45% · Dementia 44% · Stroke 40% · Cancer 14%.

The office billed $2,903,915, Medicare allowed $612,454 and paid $483,015; for 6,941 services of 21 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.

$33,196 in 2024

Medicaid paid $33,196 for 1,939 billed services this clinician did in 2024, up to 26 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.

$186,335

Pharmacies billed $186,335 in 2024.

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

Opioids were 45% of their Part D prescriptions (182 of 408) in 2024. Above the middle of the specialty; the typical physical medicine and rehabilitation clinician is at 12%.

330 generic and 78 brand-name prescriptions · $186,335 in drug cost.

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.

$22,399 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.

Research money

Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.

NPI

1356451579

Licence

CA A53397California A53397: Current · expires 2027-12-31

Gender

Male