Adrian O Ma, MD

1 location

Hospitals listed: El Camino Health · Santa Clara Valley Medical Center. That is not proof they admit you there this week.

34 plans · 9 carriers

Licence A45522 · Current

Licensed to practise in California · since 1988 · expires 2027-12-31 · University of New South Wales Faculty of Medicine.

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

2 hospitals

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

• El Camino HealthMountain View, CAAcute Care Hospital · Government - Hospital District or Authority · Has an emergency department · Birthing-friendlyPart of El Camino Health, which runs 2 hospitalsPatients rate it 4 of 5 · 80% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.291, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.393, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0, Oct 2024 – Sep 2025
• Santa Clara Valley Medical CenterSan Jose, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of Santa Clara Valley Health and Hospital System, which runs 3 hospitalsPatients rate it 3 of 5 · 70% would definitely recommend it
  Overall rating: 2 of 5 starsWorse than the national rate — SSI - Colon Surgery: 2.572, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.563, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.256, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.369, Oct 2024 – Sep 2025

$990,888

Medicare paid this office $990,888 for 568 people.

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

Procedures Medicare counted

Who their Medicare patients are

568 Original Medicare patients in 2024. Average age 78 · Under 65 3% · 85 and older 25% · Women 52% · Also on Medicaid 58% · Health risk score 1.71. At or below the middle of the specialty; the typical cardiology clinician is at 1.71.

Conditions among them: High blood pressure 75% · Diabetes 49% · Coronary heart disease 45% · Atrial fibrillation 34% · Chronic kidney disease 33% · Heart failure 29% · COPD 14% · Cancer 11% · Dementia 11% · Depression 10% · Stroke 10%.

The office billed $1,812,792, Medicare allowed $1,254,237 and paid $990,888; for 6,402 services of 47 kinds; $4,910 of it was for drugs given in the office and $985,978 for care.

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.

$43,191 in 2024

Medicaid paid $43,191 for 3,309 billed services this clinician did in 2024, up to 194 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.

$1,457,385

Pharmacies billed $1,457,385 in 2024.

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

Opioids were 0% of their Part D prescriptions (0 of 6,107) in 2024. At or below the middle of the specialty; the typical cardiology clinician is at 0%.

4,576 generic and 1,531 brand-name prescriptions · $1,457,385 in drug cost · 23 antibiotic prescriptions to 21 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.