Edward Y Kao, MD
Diagnostic Radiology · South San Francisco
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
Offices
1 location · Permanente Medical Group Inc · 10,928 clinicians in this group
Hospitals listed: Kaiser Foundation Hospital - South San Francisco. That is not proof they admit you there this week.
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Kao’s office at (650) 742-2000 to ask if they take your plan before you enroll.
California Medical Board record
Licence A89636 · Current
Licensed to practise in California · since 2004 · expires 2028-06-30 · University of California, Davis School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Hospitals they work in
1 hospital
These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.
- Kaiser Foundation Hospital - South San FranciscoSouth San Francisco, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Kaiser Permanente, which runs 41 hospitals in 3 statesPatients rate it 4 of 5 · 74% would definitely recommend itOverall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0, Oct 2024 – Sep 2025
See every measure and the patient survey for Kaiser Foundation Hospital - South San Francisco
Behind the star rating — Deaths: 0 better, 1 the same, 0 worse of 1 measures. Safety: 1 better, 5 the same, 0 worse of 6 measures. Readmissions: 0 better, 1 the same, 0 worse of 1 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Clostridium Difficile (C.Diff)Infections | 0 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.04 (0 to 2.12) · 89 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.97 (0.49 to 1.46) | No different | Jul 2022 – Jun 2024 |
| Death rate for stroke patientsComplications and deaths | 14.3 · 195 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3.7 · 1,992 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.21 (0 to 0.44) · 562 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.31 (0.1 to 0.53) · 589 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.37 (0.77 to 5.96) · 64 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.66 (0 to 3.39) · 26 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.31 (0.58 to 4.04) · 57 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 8.99 (0 to 18.96) · 27 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.49 (0 to 1.68) · 433 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.1 · 108 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.772 | No different | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.867 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.9 · 75 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 22.4 · 520 cases | None | Jul 2023 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 21.2 · 562 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.3 · 111 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 21 · 149 cases | None | Jul 2023 – Jun 2025 |
What patients said (553 patients answered, 27% of those asked)
| Cleanliness | 4 |
| Nurse communication | 3 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 2 |
| Recommend hospital | 4 |
| Room was "always" clean | 74% |
| Nurses "always" communicated well | 77% |
| Doctors "always" communicated well | 82% |
| Staff "always" explained | 61% |
| Yes, staff "did" give patients this information | 87% |
| Yes, staff "did" give patients information about help after discharge | 87% |
| Doctors "always" explained things so they could understand | 78% |
| Doctors "always" listened carefully | 81% |
| Doctors "always" treated them with courtesy and respect | 87% |
| Patients who gave a rating of "9" or "10" (high) | 73% |
| Staff "always" explained new medications | 71% |
| Nurses "always" explained things so they could understand | 71% |
| Nurses "always" listened carefully | 75% |
| Nurses "always" treated them with courtesy and respect | 85% |
| "Always" quiet at night | 39% |
| "YES", patients would definitely recommend the hospital | 74% |
| Staff "always" explained possible side effects | 50% |
| Yes, staff "did" give patients information about possible symptoms | 87% |
Original Medicare doctor bills
$1,157
Medicare paid this office $1,157 for 38 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| X-ray of chest, 1 view | 16 | $104 | $6 |
Who their Medicare patients are
38 Original Medicare patients in 2024. Average age 73 · Women 61% · Health risk score 1.65. At or below the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.
Conditions among them: High blood pressure 75% · Diabetes 45% · Depression 34% · COPD 32% · Coronary heart disease 29% · Chronic kidney disease 29%.
The office billed $9,080, Medicare allowed $1,812 and paid $1,157; for 73 services of 33 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
| 2024 | 38 | 73 | 73 | 1.65 | $9,080 | $1,157 |
| 2023 | 55 | 102 | 71 | 2.12 | $18,560 | $2,864 |
| 2022 | 70 | 106 | 70 | 1.68 | $18,247 | $2,369 |
| 2021 | 50 | 84 | 67 | 1.73 | $19,729 | $2,822 |
| 2020 | 38 | 52 | 69 | 2.10 | $7,966 | $1,116 |
| 2019 | 65 | 109 | 69 | 1.99 | $19,082 | $3,200 |
| 2018 | 63 | 96 | 68 | 1.63 | $22,116 | $3,383 |
| 2017 | 52 | 78 | 73 | 1.53 | $11,434 | $1,571 |
| 2016 | 43 | 59 | 68 | 1.86 | $8,994 | $1,617 |
| 2015 | 38 | 54 | 70 | 2.83 | $6,465 | $776 |
| 2014 | 29 | 42 | 72 | 1.73 | $6,532 | $1,213 |
| 2013 | 37 | 71 | 69 | 1.84 | $10,344 | $1,630 |
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.
See the services billed each year
2023: 1 service
| X-ray of chest, 1 view | 12 | $109 | $7 |
2022: 1 service
| X-ray of chest, 1 view | 20 | $143 | $7 |
2020: 1 service
| X-ray of chest, 1 view | 14 | $109 | $7 |
2019: 1 service
| X-ray of chest, 1 view | 23 | $197 | $7 |
2018: 1 service
| X-ray of chest, 1 view | 15 | $126 | $8 |
2017: 1 service
| X-ray of chest, 1 view, front | 19 | $132 | $6 |
2016: 1 service
| X-ray of chest, 1 view, front | 12 | $79 | $7 |
2013: 1 service
| X-ray of chest, 1 view, front | 16 | $149 | $7 |
Medicaid work
$591 in 2024
Medicaid paid $591 for 68 billed services this clinician did in 2024, up to 21 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.
| Radiologic examination, chest; single view | 68 | $591 |
| 2024 | 68 | 1 | 21 | $591 |
| 2023 | 58 | 3 | 18 | $1,033 |
| 2022 | 15 | 1 | 13 | $70 |
| 2020 | 16 | 1 | 13 | $19 |
See the largest Medicaid services in earlier years
2023
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 14 | $800 |
| Computed tomography, head or brain; without contrast material | 13 | $138 |
| Radiologic examination, chest; single view | 31 | $95 |
2022
| Radiologic examination, chest; single view | 15 | $70 |
2020
| Radiologic examination, chest; 2 views | 16 | $19 |
Money from drug and device companies
$101 in 2025
A payment is not proof that care is biased.
| GlaxoSmithKline | Ojjaara | $101 | 4 payments
|
See all 4 published payments
| GlaxoSmithKline | Meals · 2025-11-14 | Blenrep | $25 |
| GlaxoSmithKline | Meals · 2025-09-16 | Ojjaara | $29 |
| GlaxoSmithKline | Meals · 2025-08-22 | Ojjaara | $26 |
| GlaxoSmithKline | Meals · 2025-06-04 | Ojjaara | $20 |
Professional record
- NPI
- 1255530366
- Licence
- CA A89636California A89636: Current · expires 2028-06-30
- Trained
- University of California, Davis School of Medicine, 2003
- Gender
- Male
More record details
- Sole proprietor
- Yes
- Taxonomy
- Diagnostic radiology (2085R0202X)
- Mailing address
- 751 S Bascom Ave, San Jose, CA, 95128
- NPI first listed
- 2007-07-17
- NPI last updated
- 2022-02-11
This is when the NPI record was last certified, not a medical board exam.
This office lists an electronic records connection.