William Chun-Yin Hui, MD
Family Practice · Stanford
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 1
- 1 carrier
- Office
- 1
Offices
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.
Plans that list them
1 plan · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Hui’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| DualConnect (HMO D-SNP) | Santa Clara Family Health Plan | Listed | Sep 1, 2026 |
California Medical Board record
Licence A164255 · Current
Licensed to practise in California · since 2019 · expires 2027-08-31 · Drexel University College 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.
- 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 itOverall 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
See every measure and the patient survey for Stanford Health Care
Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 5.31 (4.24 to 6.37) · 8,661 cases | Worse | Jul 2022 – Jun 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 14.1 (12.7 to 15.7) · 2,191 cases | Worse | Jan 2024 – Dec 2024 |
| Postoperative respiratory failure rateComplications and deaths | 4.08 (1.95 to 6.21) · 5,296 cases | Better | Jul 2022 – Jun 2024 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.317 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.446 | Better | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.241 | Better | Oct 2024 – Sep 2025 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.7 (0.6 to 0.9) · 3,348 cases | Better | Jan 2024 – Dec 2024 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.06 (0.45 to 1.67) · 5,374 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.86 (0.72 to 1) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 166.09 (137.88 to 194.3) · 470 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.1 · 192 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 6.4 · 146 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 9.7 · 253 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 6.3 · 880 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 10.3 · 935 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 8.7 · 501 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 2.1 · 7,730 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.13 (0 to 0.27) · 20,799 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.28 (0.14 to 0.43) · 23,182 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 0.94 (0.2 to 1.68) · 5,694 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.36 (1.54 to 3.19) · 7,846 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5.2 (3.76 to 6.64) · 5,603 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.38 (0.23 to 2.53) · 2,211 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.52 (0.21 to 0.83) · 19,915 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.6 · 416 cases | None | Apr 2023 – Mar 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.869 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.857 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 0.368 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 16.2 · 247 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 20.5 · 1,021 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 47.8 · 258 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -1.6 · 990 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 20.8 · 976 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.5 · 959 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.2 (4.4 to 6.2) · 2,191 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.1 · 425 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 9.6 · 158 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.6 · 183 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 12.7 (10.4 to 15.4) · 4,578 cases | No different | Jan 2022 – Dec 2024 |
What patients said (6,810 patients answered, 25% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 2 |
| Recommend hospital | 5 |
| Room was "always" clean | 75% |
| Nurses "always" communicated well | 82% |
| Doctors "always" communicated well | 81% |
| Staff "always" explained | 63% |
| Yes, staff "did" give patients this information | 89% |
| Yes, staff "did" give patients information about help after discharge | 89% |
| Doctors "always" explained things so they could understand | 76% |
| Doctors "always" listened carefully | 80% |
| Doctors "always" treated them with courtesy and respect | 87% |
| Patients who gave a rating of "9" or "10" (high) | 79% |
| Staff "always" explained new medications | 76% |
| Nurses "always" explained things so they could understand | 77% |
| Nurses "always" listened carefully | 79% |
| Nurses "always" treated them with courtesy and respect | 88% |
| "Always" quiet at night | 53% |
| "YES", patients would definitely recommend the hospital | 83% |
| Staff "always" explained possible side effects | 50% |
| Yes, staff "did" give patients information about possible symptoms | 90% |
Original Medicare doctor bills
$20,096
Medicare paid this office $20,096 for 279 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Return visit (30+ min) | 126 | $8,232 | $57 |
| Short return visit (20+ min) | 70 | $3,659 | $51 |
| Aspiration and/or injection of fluid from large joint | 38 | $1,584 | $40 |
| Short return visit (20+ min) | 21 | $1,210 | $55 |
| Return visit (30+ min) | 14 | $1,035 | $74 |
See all 6 services
| Return visit (30+ min) | 126 | $8,232 | $57 |
| Short return visit (20+ min) | 70 | $3,659 | $51 |
| Aspiration and/or injection of fluid from large joint | 38 | $1,584 | $40 |
| Short return visit (20+ min) | 21 | $1,210 | $55 |
| Return visit (30+ min) | 14 | $1,035 | $74 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 19 | $371 | $18 |
Procedures Medicare counted
| Removal of nail tissue | 1-10 | None |
| Removal of skin lesions | 1-10 | None |
| Removal or shaving of skin growth | 1-10 | None |
Who their Medicare patients are
279 Original Medicare patients in 2024. Average age 75 · Under 65 7% · 85 and older 15% · Women 64% · Also on Medicaid 26% · Health risk score 1.21. Above the middle of the specialty; the typical family practice clinician is at 1.13.
Conditions among them: High blood pressure 65% · Diabetes 28% · Coronary heart disease 26% · Chronic kidney disease 22% · Cancer 18% · Depression 18% · Atrial fibrillation 16% · Heart failure 14% · Stroke 12% · COPD 10% · Dementia 7%.
The office billed $93,015, Medicare allowed $29,906 and paid $20,096; for 384 services of 26 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 | 279 | 384 | 75 | 1.21 | $93,015 | $20,096 |
| 2023 | 281 | 362 | 73 | 1.24 | $105,766 | $19,042 |
| 2022 | 111 | 130 | 68 | 1.45 | $37,861 | $8,155 |
| 2021 | 29 | 38 | 66 | 1.41 | $4,605 | $2,831 |
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: 4 services
| Return visit (30+ min) | 156 | $10,388 | $56 |
| Short return visit (20+ min) | 77 | $4,073 | $48 |
| Telephone medical discussion with physician, 21-30 minutes | 16 | $1,166 | $73 |
| Telephone medical discussion with physician, 11-20 minutes | 18 | $971 | $54 |
2022: 2 services
| Return visit (30+ min) | 50 | $3,334 | $63 |
| Short return visit (20+ min) | 29 | $1,616 | $54 |
2021: 1 service
| Return visit (30+ min) | 17 | $1,869 | $93 |
Medicaid work
$314 in 2023
Medicaid paid $314 for 14 billed services this clinician did in 2023, up to 13 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.
| Return visit (30+ min) | 14 | $314 |
| 2023 | 14 | 1 | 13 | $314 |
| 2022 | 537 | 5 | 41 | $19,720 |
| 2021 | 184 | 2 | 27 | $10,539 |
See the largest Medicaid services in earlier years
2022
| Return visit (30+ min) | 216 | $14,932 |
| Short return visit (20+ min) | 113 | $4,691 |
| COLLECTION VENOUS BLOOD VENIPUNCTURE | 54 | $97 |
| BODY MASS INDEX DOCD | 105 | $0 |
| Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM) | 49 | $0 |
2021
| Return visit (30+ min) | 129 | $7,646 |
| Short return visit (20+ min) | 55 | $2,893 |
Drugs they prescribed that Part D paid
$134,170
Pharmacies billed $134,170 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 2% of their Part D prescriptions (30 of 1,342) in 2024. Above the middle of the specialty; the typical family practice clinician is at 2%.
1,169 generic and fewer than 11 brand-name prescriptions · $134,170 in drug cost · 38 antibiotic prescriptions to 27 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.
| Eliquis | 16 | $21,843 | $1,365 |
| Ozempic | 14 | $14,350 | $1,025 |
| Trulicity | 15 | $13,307 | $887 |
| Celecoxib | 14 | $1,553 | $111 |
| Atorvastatin | 99 | $1,468 | $15 |
See all 30 drugs
| Eliquis | 16 | $21,843 | $1,365 |
| Ozempic | 14 | $14,350 | $1,025 |
| Trulicity | 15 | $13,307 | $887 |
| Celecoxib | 14 | $1,553 | $111 |
| Atorvastatin | 99 | $1,468 | $15 |
| Paxlovid | 13 | $1,429 | $110 |
| Rosuvastatin | 30 | $1,396 | $47 |
| Gabapentin | 38 | $810 | $21 |
| Levothyroxine | 57 | $800 | $14 |
| Tamsulosin | 43 | $734 | $17 |
| Pantoprazole | 29 | $459 | $16 |
| Fluticasone Propionate | 26 | $449 | $17 |
| Metoprolol | 29 | $417 | $14 |
| Lisinopril | 43 | $401 | $9 |
| Clopidogrel | 12 | $355 | $30 |
| Diclofenac | 12 | $333 | $28 |
| Metformin | 28 | $314 | $11 |
| Estradiol (Once Weekly) | 11 | $312 | $28 |
| Valsartan | 11 | $295 | $27 |
| Ondansetron Odt | 15 | $287 | $19 |
| Trazodone | 23 | $275 | $12 |
| Amlodipine Besylate | 48 | $272 | $6 |
| Losartan | 26 | $262 | $10 |
| Omeprazole | 14 | $203 | $14 |
| Hydrocodone-Acetaminophen | 12 | $189 | $16 |
| Famotidine | 13 | $171 | $13 |
| Atenolol | 13 | $123 | $9 |
| Citalopram Hbr | 12 | $111 | $9 |
| Hydrochlorothiazide | 38 | $111 | $3 |
| Simvastatin | 22 | $72 | $3 |
Year by year
| 2024 | 1,342 | 431 | 2% (30) | None | $134,170 |
| 2023 | 558 | 239 | 3% (18) | None | $48,693 |
| 2022 | 461 | 148 | 3% (14) | None | $23,947 |
| 2021 | 457 | 114 | 2% (11) | None | $52,051 |
| 2020 | 473 | 73 | None | None | $77,535 |
| 2019 | 133 | 35 | 0% (0) | None | $8,020 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 13 drugs
| Diclofenac | 12 | $787 | $66 |
| Atorvastatin | 32 | $671 | $21 |
| Gabapentin | 19 | $386 | $20 |
| Metoprolol | 12 | $386 | $32 |
| Amlodipine Besylate | 32 | $338 | $11 |
| Escitalopram | 14 | $269 | $19 |
| Levothyroxine | 11 | $241 | $22 |
| Fluticasone Propionate | 14 | $221 | $16 |
| Lisinopril | 24 | $218 | $9 |
| Famotidine | 11 | $162 | $15 |
| Rosuvastatin | 12 | $135 | $11 |
| Metformin | 13 | $117 | $9 |
| Naproxen | 12 | $59 | $5 |
2022: 12 drugs
| Breo Ellipta | 12 | $4,560 | $380 |
| Diclofenac | 30 | $1,786 | $60 |
| Albuterol Sulfate Hfa | 32 | $1,443 | $45 |
| Omeprazole | 18 | $223 | $12 |
| Metoprolol | 13 | $214 | $16 |
| Fluticasone Propionate | 11 | $212 | $19 |
| Amlodipine Besylate | 12 | $154 | $13 |
| Gabapentin | 17 | $132 | $8 |
| Hydrochlorothiazide | 31 | $111 | $4 |
| Lisinopril | 15 | $91 | $6 |
| Triamcinolone Acetonide | 16 | $71 | $4 |
| Meloxicam | 11 | $52 | $5 |
2021: 11 drugs
| Diclofenac | 24 | $2,271 | $95 |
| Metoprolol | 16 | $367 | $23 |
| Levothyroxine | 13 | $252 | $19 |
| Atorvastatin | 16 | $251 | $16 |
| Gabapentin | 13 | $225 | $17 |
| Amlodipine Besylate | 25 | $154 | $6 |
| Amitriptyline | 11 | $151 | $14 |
| Metformin | 17 | $136 | $8 |
| Losartan | 12 | $111 | $9 |
| Metoprolol | 14 | $38 | $3 |
| Hydrochlorothiazide | 13 | $37 | $3 |
2020: 10 drugs
| Trulicity | 12 | $13,361 | $1,113 |
| Lantus Solostar | 13 | $5,812 | $447 |
| Basaglar Kwikpen U-100 | 13 | $4,610 | $355 |
| Ventolin Hfa | 12 | $697 | $58 |
| Atorvastatin | 16 | $321 | $20 |
| Losartan | 17 | $199 | $12 |
| Metformin | 22 | $172 | $8 |
| Gabapentin | 12 | $144 | $12 |
| Amlodipine Besylate | 22 | $85 | $4 |
| Metoprolol | 14 | $68 | $5 |
Money from drug and device companies
$328 in 2024
A payment is not proof that care is biased.
| Butterfly Network | None | $328 | 1 payment
|
See the published payment
| Butterfly Network | Meals · 2024-05-08 | None | $328 |
Professional record
- NPI
- 1457857831
- Licence
- CA A164255, PA MD473425California A164255: Current · expires 2027-08-31
- Trained
- Drexel University College of Medicine, 2018
- Group
- Stanford Health Care
- Video visits
- Lists video visits
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Family medicine (207Q00000X)
- Mailing address
- 300 Pasteur Dr, Stanford, CA, 94305
- NPI first listed
- 2018-04-04
- NPI last updated
- 2024-04-26
- NPI record certified
- 2024-04-26
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 3737 Market Street, Philadelphia, PA, 19104