Karen Michelle Phan Wai, MD

3 locations · Stanford Health Care · University Healthcare Alliance · County of Santa Clara

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

20 plans · 4 carriers

Licence A176636 · Current

Licensed to practise in California · since 2022 · expires 2028-05-31 · Case Western Reserve University School of Medicine.

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

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

$74,359

Medicare paid this office $74,359 for 318 people.

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

Procedures Medicare counted

Who their Medicare patients are

318 Original Medicare patients in 2024. Average age 74 · Under 65 8% · 85 and older 13% · Women 59% · Also on Medicaid 31% · Health risk score 1.42. Above the middle of the specialty; the typical ophthalmology clinician is at 1.16.

Conditions among them: High blood pressure 75% · Diabetes 49% · Coronary heart disease 26% · Chronic kidney disease 24% · Depression 20% · Cancer 17% · Heart failure 14% · Atrial fibrillation 14% · COPD 9% · Dementia 9% · Stroke 8%.

The office billed $584,520, Medicare allowed $94,629 and paid $74,359; for 1,103 services of 30 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.

$2,784 in 2024

Medicaid paid $2,784 for 104 billed services this clinician did in 2024, up to 33 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.

$6,191

Pharmacies billed $6,191 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 124) in 2024. At or below the middle of the specialty; the typical ophthalmology clinician is at 0%.

88 generic and fewer than 11 brand-name prescriptions · $6,191 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.

$5,567 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.

NPI

1073017208

Licence

CA A176636California A176636: Current · expires 2028-05-31

Group

Stanford Health Care · University Healthcare Alliance · County of Santa Clara

Gender

Female