Billy Wiseman Loo, MD

1 location · Stanford Health Care · 3,152 clinicians in this group

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

13 plans · 2 carriers

Licence A76374 · Current

Licensed to practise in California · since 2001 · expires 2027-06-30 · University of California, Davis 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 Radiology - Radiation Oncology

1 hospital

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

• Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
  Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024

$50,516

Medicare paid this office $50,516 for 128 people.

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

Who their Medicare patients are

128 Original Medicare patients in 2024. Average age 77 · Women 52% · Also on Medicaid 20% · Health risk score 2.16. Sicker patients than 9 in 10 peers; the typical radiation oncology clinician is at 1.69.

Conditions among them: Cancer 75% · High blood pressure 69% · Coronary heart disease 30% · COPD 27% · Chronic kidney disease 25% · Diabetes 24% · Atrial fibrillation 22% · Heart failure 20% · Depression 12%.

The office billed $583,671, Medicare allowed $64,001 and paid $50,516; for 396 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.

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

Opioids were 0% of their 15 Part D prescriptions in 2019. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

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

Year by year

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

$144 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.

Medicare did not publish checkup rates for this clinician.

NPI

1720167711

Licence

CA A76374California A76374: Current · expires 2027-06-30

Group

Stanford Health Care

Video visits

Lists video visits

Gender

Male