Weichung Liu, MD
Diagnostic Radiology · Richmond
- 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
- Since medical school
- 22 years
- Harvard Medical School, 2004
Offices
1 location · Permanente Medical Group Inc · 10,928 clinicians in this group
Looking this up.
Hospitals listed: Kaiser Foundation Hospital - Antioch · Kaiser Foundation Hospital - Walnut Creek. 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. Liu’s office at (510) 307-1500 to ask if they take your plan before you enroll.
California Medical Board record
Licence A95632 · Current
Licensed to practise in California · since 2006 · expires 2027-12-31 · Harvard Medical School.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Hospitals they work in
2 hospitals
These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.
- Kaiser Foundation Hospital - AntiochAntioch, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Kaiser Permanente, which runs 41 hospitals in 3 statesPatients rate it 3 of 5 · 73% would definitely recommend itOverall rating: 1 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.57, Oct 2024 – Sep 2025
- Kaiser Foundation Hospital - Walnut CreekWalnut Creek, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Kaiser Permanente, which runs 41 hospitals in 3 statesPatients rate it 3 of 5 · 70% would definitely recommend itOverall rating: 3 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.2, Oct 2024 – Sep 2025
See every measure and the patient survey for Kaiser Foundation Hospital - Antioch
Behind the star rating — Deaths: 0 better, 4 the same, 0 worse of 4 measures. Safety: 1 better, 5 the same, 0 worse of 6 measures. Readmissions: 0 better, 1 the same, 1 worse of 2 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 | 0.57 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.02 (0 to 2.09) · 144 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.14 (0.68 to 1.59) | No different | Jul 2022 – Jun 2024 |
| Death rate for heart failure patientsComplications and deaths | 12.5 · 27 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 15.4 · 37 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 14.4 · 247 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 4.4 · 2,121 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.2 (0 to 0.43) · 935 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.31 (0.09 to 0.52) · 954 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.84 (1.25 to 6.42) · 93 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.29 (0.57 to 4.01) · 83 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 2.09 (0.57 to 3.62) · 35 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.89 (0 to 1.98) · 730 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 5.6 · 38 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.431 | No different | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.39 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 1.595 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.4 · 83 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 24.1 · 533 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | 55.3 · 30 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 51.9 · 37 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 18.6 · 441 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.4 · 37 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.3 · 149 cases | None | Jul 2023 – Jun 2025 |
What patients said (1,220 patients answered, 18% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 2 |
| Discharge information | 3 |
| Overall hospital rating | 3 |
| Quietness | 2 |
| Recommend hospital | 4 |
| Room was "always" clean | 71% |
| Nurses "always" communicated well | 74% |
| Doctors "always" communicated well | 78% |
| Staff "always" explained | 56% |
| Yes, staff "did" give patients this information | 86% |
| Yes, staff "did" give patients information about help after discharge | 88% |
| Doctors "always" explained things so they could understand | 71% |
| Doctors "always" listened carefully | 77% |
| Doctors "always" treated them with courtesy and respect | 85% |
| Patients who gave a rating of "9" or "10" (high) | 71% |
| Staff "always" explained new medications | 71% |
| Nurses "always" explained things so they could understand | 70% |
| Nurses "always" listened carefully | 69% |
| Nurses "always" treated them with courtesy and respect | 82% |
| "Always" quiet at night | 45% |
| "YES", patients would definitely recommend the hospital | 73% |
| Staff "always" explained possible side effects | 41% |
| Yes, staff "did" give patients information about possible symptoms | 84% |
See every measure and the patient survey for Kaiser Foundation Hospital - Walnut Creek
Behind the star rating — Deaths: 0 better, 1 the same, 0 worse of 1 measures. Safety: 2 better, 4 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 | 0.2 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.02 (0 to 2.1) · 126 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.14 (0.67 to 1.6) | No different | Jul 2022 – Jun 2024 |
| Death rate for stroke patientsComplications and deaths | 9 · 264 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 4.2 · 3,449 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.2 (0 to 0.43) · 606 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.27 (0.05 to 0.48) · 612 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.35 (0.76 to 5.94) · 103 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.28 (0.56 to 3.99) · 92 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 14.08 (4.29 to 23.88) · 30 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.75 (0.22 to 3.27) · 36 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.45 (0 to 1.59) · 528 cases | No different | Jul 2022 – Jun 2024 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 1.032 | No different | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.797 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.298 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 1.86 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 13.6 · 296 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 22.9 · 764 cases | None | Jul 2023 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 20.3 · 723 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.6 · 161 cases | None | Jul 2023 – Jun 2025 |
What patients said (633 patients answered, 26% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 2 |
| Discharge information | 3 |
| Overall hospital rating | 3 |
| Quietness | 1 |
| Recommend hospital | 4 |
| Room was "always" clean | 69% |
| Nurses "always" communicated well | 75% |
| Doctors "always" communicated well | 78% |
| Staff "always" explained | 56% |
| Yes, staff "did" give patients this information | 86% |
| Yes, staff "did" give patients information about help after discharge | 86% |
| Doctors "always" explained things so they could understand | 72% |
| Doctors "always" listened carefully | 77% |
| Doctors "always" treated them with courtesy and respect | 85% |
| Patients who gave a rating of "9" or "10" (high) | 64% |
| Staff "always" explained new medications | 69% |
| Nurses "always" explained things so they could understand | 70% |
| Nurses "always" listened carefully | 70% |
| Nurses "always" treated them with courtesy and respect | 83% |
| "Always" quiet at night | 35% |
| "YES", patients would definitely recommend the hospital | 70% |
| Staff "always" explained possible side effects | 42% |
| Yes, staff "did" give patients information about possible symptoms | 86% |
Original Medicare doctor bills
$6,025
Medicare paid this office $6,025 for 124 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Screening mammography | 17 | $2,770 | $87 |
| Ct scan head or brain without contrast | 20 | $588 | $29 |
| X-ray of chest, 1 view | 31 | $207 | $6 |
Who their Medicare patients are
124 Original Medicare patients in 2024. Average age 69 · Under 65 31% · 85 and older 14% · Women 65% · Also on Medicaid 61% · Health risk score 1.93. Above the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.
Conditions among them: High blood pressure 65% · Diabetes 43% · Chronic kidney disease 32% · Depression 29% · Heart failure 25% · Coronary heart disease 23% · Atrial fibrillation 22% · Stroke 19% · COPD 18% · Dementia 16% · Cancer 14%.
The office billed $43,982, Medicare allowed $7,742 and paid $6,025; for 171 services of 41 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 | 124 | 171 | 69 | 1.93 | $43,982 | $6,025 |
| 2023 | 101 | 149 | 68 | 2.05 | $40,665 | $5,658 |
| 2022 | 112 | 154 | 68 | 1.81 | $37,222 | $5,002 |
| 2021 | 104 | 150 | 68 | 2.02 | $27,904 | $3,918 |
| 2020 | 75 | 108 | 65 | 2.85 | $16,816 | $2,482 |
| 2019 | 99 | 141 | 69 | 2.61 | $22,846 | $3,990 |
| 2018 | 74 | 105 | 66 | 2.49 | $25,440 | $3,795 |
| 2017 | 81 | 118 | 64 | 2.25 | $21,973 | $3,486 |
| 2016 | 67 | 95 | 63 | 1.94 | $17,002 | $2,920 |
| 2015 | 82 | 111 | 68 | 2.03 | $18,330 | $2,525 |
| 2014 | 63 | 95 | 64 | 2.04 | $13,988 | $2,632 |
| 2013 | 797 | 2,832 | 73 | 0.94 | $387,378 | $126,549 |
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: 3 services
| Screening mammography | 17 | $2,835 | $83 |
| Ct scan head or brain without contrast | 13 | $431 | $33 |
| X-ray of chest, 1 view | 22 | $173 | $7 |
2022: 3 services
| Screening mammography | 11 | $1,777 | $85 |
| Ct scan head or brain without contrast | 13 | $419 | $32 |
| X-ray of chest, 1 view | 27 | $215 | $8 |
2021: 1 service
| X-ray of chest, 1 view | 30 | $220 | $7 |
2020: 1 service
| X-ray of chest, 1 view | 32 | $226 | $7 |
2019: 3 services
| Ct scan head or brain without contrast | 15 | $523 | $35 |
| X-ray of chest, 1 view | 29 | $271 | $8 |
| X-ray of chest, 2 views | 14 | $108 | $8 |
2018: 2 services
| Ct scan head or brain without contrast | 15 | $459 | $31 |
| X-ray of chest, 1 view | 11 | $87 | $8 |
2017: 2 services
| Ct scan head or brain without contrast | 15 | $351 | $23 |
| X-ray of chest, 1 view, front | 14 | $99 | $7 |
2016: 1 service
| X-ray of chest, 1 view, front | 14 | $107 | $8 |
2015: 2 services
| Ct scan head or brain without contrast | 12 | $336 | $28 |
| X-ray of chest, 1 view, front | 31 | $233 | $7 |
2014: 1 service
| X-ray of chest, 1 view, front | 18 | $143 | $8 |
2013: 15 services
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 348 | $60,761 | $174 |
| Dxa bone density measurement of hip, pelvis, spine | 94 | $6,054 | $64 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; unilateral | 38 | $4,532 | $119 |
| Computer analysis of screening mammogram to assist detection of cancer | 346 | $4,313 | $12 |
| Ultrasound of breasts | 41 | $3,845 | $89 |
| Complete ultrasound scan of abdomen | 30 | $3,508 | $117 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; bilateral | 16 | $2,567 | $160 |
| Complete ultrasound scan behind abdominal cavity | 19 | $2,355 | $124 |
| X-ray of chest, 2 views, front and side | 63 | $1,741 | $28 |
| Complete ultrasound scan of pelvis | 12 | $1,370 | $114 |
| Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina | 11 | $750 | $68 |
| X-ray of lower and sacral spine, minimum of 4 views | 14 | $603 | $43 |
| X-ray of knee, 3 views | 11 | $538 | $34 |
| Computer analysis of diagnostic mammogram | 53 | $528 | $10 |
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 14 | $160 | $0 |
Medicaid work
$84,994 in 2024
Medicaid paid $84,994 for 1,035 billed services this clinician did in 2024, up to 51 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.
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 730 | $69,644 |
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 45 | $7,025 |
| Computed tomography, head or brain; without contrast material | 55 | $3,682 |
| SCREENING DIGITAL BREAST TOMOSYNTHESIS BI | 76 | $2,681 |
| Radiologic examination, chest; single view | 79 | $1,040 |
| Radiologic examination, chest; 2 views | 34 | $539 |
| ECHO EXAM OF ABDOMEN | 16 | $384 |
| 2024 | 1,035 | 7 | 51 | $84,994 |
| 2023 | 699 | 3 | 70 | $776 |
| 2022 | 269 | 3 | 23 | $85 |
| 2021 | 231 | 2 | 16 | $159 |
| 2020 | 108 | 2 | 22 | $55 |
| 2019 | 126 | 3 | 17 | $369 |
| 2018 | 57 | 1 | 22 | $0 |
See the largest Medicaid services in earlier years
2023
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 590 | $633 |
| Radiologic examination, chest; single view | 37 | $116 |
| Radiologic examination, chest; 2 views | 72 | $28 |
2022
| Radiologic examination, chest; single view | 22 | $48 |
| Radiologic examination, chest; 2 views | 41 | $37 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 206 | $0 |
2021
| Radiologic examination, chest; single view | 44 | $126 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 187 | $33 |
2020
| Radiologic examination, chest; single view | 26 | $55 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 82 | $0 |
2019
| Computed tomography, head or brain; without contrast material | 14 | $331 |
| Radiologic examination, chest; 2 views | 35 | $37 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 77 | $0 |
2018
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 57 | $0 |
Professional record
- NPI
- 1700066776
- Licence
- CA A95632California A95632: Current · expires 2027-12-31
- Trained
- Harvard Medical School, 2004 · 22 years ago
- Gender
- Male
More record details
- Sole proprietor
- No
- Medicaid ID
- CA 00A856320
- Taxonomy
- Diagnostic radiology (2085R0202X)
- Mailing address
- 2581 Samaritan Dr, Suite 206, San Jose, CA, 95124
- NPI first listed
- 2007-11-07
- NPI last updated
- 2021-12-20
This is when the NPI record was last certified, not a medical board exam.
This office lists an electronic records connection.