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Wei David Hao, MD

Emergency Medicine · Stanford

NPI 1952713810

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

Looking this up.

Hospitals listed: Stanford Health Care. 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. Hao’s office at (650) 723-4000 to ask if they take your plan before you enroll.

California Medical Board record

Licence A156291 · Current

Licensed to practise in California · since 2018 · expires 2028-06-30 · Sidney Kimmel Medical College at Thomas Jefferson University.

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 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
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.

Every scored measure at Stanford Health Care
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.31 (4.24 to 6.37) · 8,661 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits14.1 (12.7 to 15.7) · 2,191 casesWorseJan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths4.08 (1.95 to 6.21) · 5,296 casesBetterJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.317BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.446BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.241BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.7 (0.6 to 0.9) · 3,348 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.06 (0.45 to 1.67) · 5,374 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.86 (0.72 to 1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths166.09 (137.88 to 194.3) · 470 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.1 · 192 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 146 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.7 · 253 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.3 · 880 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 935 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 501 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.1 · 7,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.27) · 20,799 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.28 (0.14 to 0.43) · 23,182 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.94 (0.2 to 1.68) · 5,694 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.36 (1.54 to 3.19) · 7,846 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.2 (3.76 to 6.64) · 5,603 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.38 (0.23 to 2.53) · 2,211 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0.21 to 0.83) · 19,915 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.6 · 416 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.869No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.857No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.368No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16.2 · 247 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.5 · 1,021 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits47.8 · 258 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-1.6 · 990 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits20.8 · 976 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.5 · 959 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (4.4 to 6.2) · 2,191 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.1 · 425 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.6 · 158 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 183 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.4 to 15.4) · 4,578 casesNo differentJan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

Patient survey stars by topic at Stanford Health Care
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at Stanford Health Care
Room was "always" clean75%
Nurses "always" communicated well82%
Doctors "always" communicated well81%
Staff "always" explained63%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)79%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital83%
Staff "always" explained possible side effects50%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$64,093

Medicare paid this office $64,093 for 408 people.

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

Largest Original Medicare bills
Emergency department visit with high level of medical decision making291$41,668$140
Critical care, first 30-74 minutes80$14,867$186
Emergency department visit with moderate level of medical decision making33$3,116$94
Ultrasound of heart, follow-up20$444$22
Limited ultrasound scan behind abdominal cavity13$315$24

Who their Medicare patients are

408 Original Medicare patients in 2024. Average age 75 · Under 65 14% · 85 and older 22% · Women 58% · Also on Medicaid 40% · Health risk score 2.15. Above the middle of the specialty; the typical emergency medicine clinician is at 2.01.

Conditions among them: High blood pressure 75% · Chronic kidney disease 44% · Diabetes 38% · Coronary heart disease 37% · Depression 33% · Atrial fibrillation 31% · Heart failure 28% · Cancer 26% · Dementia 24% · Stroke 20% · COPD 17%.

The office billed $466,003, Medicare allowed $84,158 and paid $64,093; for 498 services of 31 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 by year
2024408498752.15$466,003$64,093
2023356405752.16$312,434$51,603
2022298350742.34$219,076$41,776
2021336392732.13$245,444$48,126
2020304361741.98$253,357$46,113
2019299325752.04$198,221$40,245
2018122131751.99$80,522$15,319

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: 5 services

Original Medicare services billed in 2023
Emergency department visit with high level of medical decision making201$30,608$150
Emergency department visit with moderate level of medical decision making86$9,215$105
Critical care, first 30-74 minutes41$7,729$189
Emergency department visit with low level of medical decision making26$1,641$61
Ultrasound of heart, follow-up11$230$21

2022: 5 services

Original Medicare services billed in 2022
Emergency department visit with moderate level of medical decision making146$17,498$116
Emergency department visit with high level of medical decision making103$17,477$163
Critical care, first 30-74 minutes18$3,529$196
Emergency department visit with low level of medical decision making11$679$62
Emergency department visit with straightforward medical decision making20$608$30

2021: 6 services

Original Medicare services billed in 2021
Emergency department visit with high level of medical decision making129$22,694$175
Emergency department visit with moderate level of medical decision making119$13,745$115
Critical care, first 30-74 minutes17$3,687$217
Hospital observation care on day of discharge21$1,572$75
Emergency department visit with straightforward medical decision making15$581$39
Ultrasound of heart, follow-up16$378$24

2020: 7 services

Original Medicare services billed in 2020
Emergency department visit with high level of medical decision making161$25,928$160
Critical care, first 30-74 minutes37$7,812$211
Emergency department visit with moderate level of medical decision making55$5,530$101
Initial hospital observation care per day, typically 30 minutes14$1,290$92
Hospital observation care on day of discharge18$1,242$69
Emergency department visit with low level of medical decision making14$933$67
Ultrasound of heart, follow-up21$507$24

2019: 5 services

Original Medicare services billed in 2019
Emergency department visit with high level of medical decision making158$23,108$145
Critical care, first 30-74 minutes29$5,660$195
Emergency department visit with moderate level of medical decision making57$5,466$96
Initial hospital observation care per day, typically 70 minutes12$1,992$166
Emergency department visit with low level of medical decision making21$1,141$52

2018: 2 services

Original Medicare services billed in 2018
Emergency department visit with high level of medical decision making45$6,541$145
Emergency department visit with moderate level of medical decision making41$4,094$100

Medicaid work

$59,050 in 2024

Medicaid paid $59,050 for 540 billed services this clinician did in 2024, up to 49 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.

Largest Medicaid services in 2024
EMERGENCY DEPARTMENT VISIT HIGH MDM406$47,560
EMERGENCY DEPT VISIT MOD MDM120$10,657
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes14$833
Medicaid work by year
2024540349$59,050
2023511339$42,688
2022347231$27,918
2021427341$25,202
2020327338$20,669
2019285330$20,322
2018170330$11,520
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
EMERGENCY DEPARTMENT VISIT HIGH MDM239$22,623
EMERGENCY DEPT VISIT MOD MDM257$19,368
EMERGENCY DEPT VISIT LOW MDM15$697

2022

Largest Medicaid services in 2022
EMERGENCY DEPT VISIT MOD MDM291$21,719
EMERGENCY DEPARTMENT VISIT HIGH MDM56$6,199

2021

Largest Medicaid services in 2021
EMERGENCY DEPT VISIT MOD MDM291$16,995
EMERGENCY DEPARTMENT VISIT HIGH MDM72$5,291
EMERGENCY DEPT VISIT LOW MDM64$2,916

2020

Largest Medicaid services in 2020
EMERGENCY DEPARTMENT VISIT HIGH MDM113$9,765
EMERGENCY DEPT VISIT LOW MDM147$6,703
EMERGENCY DEPT VISIT MOD MDM67$4,201

2019

Largest Medicaid services in 2019
EMERGENCY DEPARTMENT VISIT HIGH MDM98$8,834
EMERGENCY DEPT VISIT MOD MDM123$8,536
EMERGENCY DEPT VISIT LOW MDM64$2,953

2018

Largest Medicaid services in 2018
EMERGENCY DEPT VISIT MOD MDM88$5,703
EMERGENCY DEPARTMENT VISIT HIGH MDM31$3,412
EMERGENCY DEPT VISIT LOW MDM51$2,405

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
76.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1952713810
Licence
CA A156291California A156291: Current · expires 2028-06-30
Trained
Jefferson Medical College of Thomas Jefferson University, 2014
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 207P00000X (207P00000X); Student in a training program (390200000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2014-05-27
NPI last updated
2024-03-22
NPI record certified
2024-03-22

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 20 York St, New Haven, CT, 06510