Yi-Chiun Wang, MD
Internal Medicine · Palo Alto
- 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
- 18 years
- New York Medical College, 2008
Offices
1 location · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Looking this up.
Hospitals listed: Stanford Health Care Tri-Valley. 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. Wang’s office at (415) 600-1020 to ask if they take your plan before you enroll.
California Medical Board record
Licence A110705 · Current
Licensed to practise in California · since 2010 · expires 2027-10-31 · New York Medical College.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
School, training and certification
What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.
Specialty certification
- American Board of Internal Medicine - Internal Medicine
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 Care Tri-ValleyPleasanton, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Stanford Health Care, which runs 3 hospitalsPatients rate it 3 of 5 · 74% would definitely recommend itOverall rating: 5 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.178, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.237, Oct 2024 – Sep 2025
See every measure and the patient survey for Stanford Health Care Tri-Valley
Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 0 worse of 7 measures. Readmissions: 2 better, 7 the same, 0 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.178 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.237 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 0.79 (0 to 1.73) · 1,041 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.79 (0.5 to 1.08) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 145.81 (96.5 to 195.12) · 72 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 2.9 · 55 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 8.6 · 92 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 12.5 · 96 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 9.5 · 395 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 10.3 · 391 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 10.1 · 162 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3 · 1,736 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.16 (0 to 0.37) · 4,425 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.22 (0.02 to 0.41) · 4,771 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.45 (1.46 to 5.44) · 1,403 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.5 (0.05 to 2.94) · 645 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 1.81 (0.38 to 3.24) · 1,279 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 8.53 (3.2 to 13.85) · 639 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5.15 (1.89 to 8.41) · 648 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.61 (0.14 to 3.07) · 370 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.16 (0 to 0.83) · 4,160 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 4 · 74 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.369 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 1.112 | 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 | 13.1 · 110 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 20.1 · 437 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | -5.8 · 94 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -19.3 · 456 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | -0.3 · 402 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 15.8 · 358 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 6.8 (4.7 to 9.6) · 198 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 10.1 (7.5 to 13.6) · 198 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.3 · 80 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 10.9 · 46 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.3 · 92 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 12.4 (9.6 to 16.2) · 1,532 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 1 (0.8 to 1.2) · 929 cases | No different | Jan 2024 – Dec 2024 |
What patients said (1,268 patients answered, 26% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 3 |
| Quietness | 2 |
| Recommend hospital | 4 |
| Room was "always" clean | 65% |
| Nurses "always" communicated well | 77% |
| Doctors "always" communicated well | 79% |
| Staff "always" explained | 58% |
| Yes, staff "did" give patients this information | 88% |
| Yes, staff "did" give patients information about help after discharge | 88% |
| Doctors "always" explained things so they could understand | 74% |
| Doctors "always" listened carefully | 78% |
| Doctors "always" treated them with courtesy and respect | 86% |
| Patients who gave a rating of "9" or "10" (high) | 70% |
| Staff "always" explained new medications | 72% |
| Nurses "always" explained things so they could understand | 73% |
| Nurses "always" listened carefully | 74% |
| Nurses "always" treated them with courtesy and respect | 84% |
| "Always" quiet at night | 42% |
| "YES", patients would definitely recommend the hospital | 74% |
| Staff "always" explained possible side effects | 44% |
| Yes, staff "did" give patients information about possible symptoms | 89% |
Original Medicare doctor bills
$35,043
Medicare paid this office $35,043 for 147 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 63 | $16,116 | $104 |
| Hospital discharge day management, more than 30 minutes | 54 | $5,918 | $102 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 55 | $5,866 | $69 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 31 | $4,768 | $154 |
| Hospital discharge day management, 30 minutes or less | 15 | $1,105 | $74 |
Who their Medicare patients are
147 Original Medicare patients in 2024. Average age 80 · 85 and older 33% · Women 57% · Also on Medicaid 32% · Health risk score 2.36. Above the middle of the specialty; the typical internal medicine clinician is at 1.76.
Conditions among them: High blood pressure 75% · Coronary heart disease 54% · Chronic kidney disease 50% · Diabetes 48% · Atrial fibrillation 38% · Heart failure 36% · Depression 35% · Dementia 29% · Cancer 24% · COPD 18% · Stroke 16%.
The office billed $131,954, Medicare allowed $44,712 and paid $35,043; for 362 services of 9 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 | 147 | 362 | 80 | 2.36 | $131,954 | $35,043 |
| 2023 | 182 | 426 | 80 | 2.15 | $163,534 | $43,483 |
| 2022 | 182 | 432 | 80 | 2.36 | $155,231 | $40,592 |
| 2021 | 185 | 417 | 78 | 2.06 | $156,217 | $42,051 |
| 2020 | 164 | 401 | 78 | 2.77 | $132,060 | $41,072 |
| 2019 | 200 | 467 | 78 | 2.75 | $154,349 | $46,227 |
| 2018 | 165 | 398 | 79 | 2.81 | $124,494 | $37,178 |
| 2017 | 164 | 374 | 77 | 2.89 | $114,977 | $35,019 |
| 2016 | 62 | 137 | 76 | 2.32 | $41,448 | $12,471 |
| 2014 | 89 | 137 | 77 | 2.73 | $48,945 | $13,107 |
| 2013 | 239 | 511 | 76 | 2.57 | $171,310 | $45,952 |
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: 6 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 70 | $14,734 | $108 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 55 | $9,134 | $157 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 70 | $8,416 | $71 |
| Hospital discharge day management, more than 30 minutes | 64 | $7,261 | $105 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 13 | $1,412 | $109 |
| Hospital discharge day management, 30 minutes or less | 14 | $1,045 | $70 |
2022: 8 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 66 | $14,400 | $94 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 54 | $5,691 | $67 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 29 | $5,480 | $183 |
| Hospital discharge day management, more than 30 minutes | 43 | $4,513 | $98 |
| Initial hospital observation care per day, typically 70 minutes | 20 | $2,954 | $148 |
| Initial hospital observation care per day, typically 50 minutes | 16 | $1,922 | $120 |
| Hospital observation care on day of discharge | 20 | $1,322 | $63 |
| Hospital discharge day management, 30 minutes or less | 11 | $722 | $66 |
2021: 6 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 72 | $15,270 | $93 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 36 | $6,985 | $179 |
| Hospital discharge day management, more than 30 minutes | 50 | $5,227 | $99 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 46 | $4,614 | $67 |
| Initial hospital observation care per day, typically 70 minutes | 25 | $3,909 | $156 |
| Hospital observation care on day of discharge | 22 | $1,476 | $67 |
2020: 5 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 78 | $17,387 | $99 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 43 | $8,163 | $186 |
| Hospital discharge day management, more than 30 minutes | 50 | $5,617 | $102 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 47 | $5,116 | $69 |
| Hospital observation care on day of discharge | 12 | $675 | $56 |
2019: 8 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 78 | $15,564 | $94 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 38 | $7,480 | $182 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 61 | $6,692 | $66 |
| Hospital discharge day management, more than 30 minutes | 53 | $5,585 | $98 |
| Initial hospital observation care per day, typically 70 minutes | 27 | $4,370 | $162 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 14 | $1,649 | $118 |
| Hospital discharge day management, 30 minutes or less | 23 | $1,540 | $67 |
| Hospital observation care on day of discharge | 17 | $1,140 | $67 |
2018: 7 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 71 | $13,534 | $91 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 31 | $6,121 | $180 |
| Hospital discharge day management, more than 30 minutes | 55 | $5,515 | $95 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 53 | $5,389 | $61 |
| Initial hospital observation care per day, typically 70 minutes | 15 | $2,484 | $166 |
| Hospital discharge day management, 30 minutes or less | 13 | $859 | $66 |
| Hospital observation care on day of discharge | 15 | $837 | $56 |
2017: 5 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 65 | $11,788 | $90 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 33 | $6,024 | $177 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 59 | $5,909 | $63 |
| Hospital discharge day management, more than 30 minutes | 44 | $4,606 | $96 |
| Initial hospital observation care per day, typically 70 minutes | 22 | $3,292 | $150 |
2016: 3 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 28 | $4,463 | $88 |
| Hospital discharge day management, more than 30 minutes | 18 | $1,741 | $92 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 18 | $1,702 | $61 |
2014: 4 services
| Initial nursing facility care with high level of medical decision making, per day 50 minutes or more | 23 | $3,240 | $141 |
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 16 | $3,183 | $86 |
| Subsequent nursing facility care with moderate level of medical decision making, per day at least 30 minutes | 20 | $1,534 | $77 |
| Hospital discharge day management, more than 30 minutes | 11 | $992 | $90 |
2013: 8 services
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 62 | $11,271 | $84 |
| Subsequent nursing facility care with moderate level of medical decision making, per day at least 30 minutes | 86 | $10,188 | $74 |
| Initial nursing facility care with high level of medical decision making, per day 50 minutes or more | 50 | $7,228 | $136 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 33 | $5,295 | $160 |
| Hospital discharge day management, more than 30 minutes | 46 | $4,049 | $86 |
| Initial hospital observation care per day, typically 70 minutes | 15 | $2,244 | $150 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day 20 minutes or more | 34 | $2,207 | $57 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 19 | $1,806 | $58 |
Drugs they prescribed that Part D paid
$20,683
Pharmacies billed $20,683 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
95 generic and 27 brand-name prescriptions · $20,683 in drug cost · 32 antibiotic prescriptions to 23 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 | 17 | $12,436 | $732 |
Year by year
| 2024 | 122 | 51 | None | 22% | $20,683 |
| 2023 | 143 | 65 | None | 9% | $11,821 |
| 2022 | 124 | 65 | None | None | $7,031 |
| 2021 | 148 | 60 | None | None | $7,156 |
| 2020 | 106 | 46 | 15% (16) | None | $5,756 |
| 2019 | 128 | 57 | None | 16% | $7,912 |
| 2018 | 110 | 53 | None | None | $2,630 |
| 2017 | 93 | 32 | None | None | $4,637 |
| 2016 | 67 | 12 | None | None | $2,048 |
| 2015 | 261 | None | None | 34% | $20,796 |
| 2014 | 512 | 35 | 2% (12) | 23% | $26,965 |
| 2013 | 565 | 83 | 6% (36) | 18% | $36,549 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 2 drugs
| Amoxicillin-Clavulanate Potass | 12 | $189 | $16 |
| Metoprolol | 13 | $61 | $5 |
2018: 1 drug
| Pantoprazole | 11 | $62 | $6 |
2015: 11 drugs
| Nuedexta | 18 | $5,135 | $285 |
| Renvela | 23 | $5,082 | $221 |
| Lidocaine | 17 | $2,452 | $144 |
| Lyrica | 12 | $2,300 | $192 |
| Levothyroxine | 25 | $268 | $11 |
| Tamsulosin | 12 | $258 | $22 |
| Pantoprazole | 13 | $213 | $16 |
| Donepezil | 19 | $202 | $11 |
| Warfarin | 28 | $155 | $6 |
| Prednisone | 11 | $105 | $10 |
| Lisinopril | 12 | $87 | $7 |
2014: 18 drugs
| Renvela | 24 | $5,448 | $227 |
| Lyrica | 23 | $4,252 | $185 |
| Lidocaine | 13 | $1,145 | $88 |
| Donepezil | 28 | $965 | $34 |
| Pantoprazole | 20 | $303 | $15 |
| Prednisone | 24 | $285 | $12 |
| Levothyroxine | 23 | $252 | $11 |
| Atorvastatin | 20 | $252 | $13 |
| Tamsulosin | 11 | $226 | $21 |
| Warfarin | 37 | $195 | $5 |
| Omeprazole | 14 | $159 | $11 |
| Polyethylene Glycol 3350 | 11 | $152 | $14 |
| Metoprolol | 17 | $151 | $9 |
| Amiodarone | 12 | $139 | $12 |
| Lisinopril | 14 | $93 | $7 |
| Amlodipine Besylate | 13 | $93 | $7 |
| Furosemide | 12 | $79 | $7 |
| Jantoven | 11 | $66 | $6 |
2013: 18 drugs
| Lyrica | 12 | $2,708 | $226 |
| Lidoderm | 11 | $2,693 | $245 |
| Enoxaparin | 16 | $1,909 | $119 |
| Polyethylene Glycol 3350 | 24 | $624 | $26 |
| Donepezil | 14 | $506 | $36 |
| Ipratropium | 16 | $364 | $23 |
| Atorvastatin | 13 | $303 | $23 |
| Omeprazole | 12 | $229 | $19 |
| Albuterol Sulfate | 17 | $193 | $11 |
| Levofloxacin | 16 | $181 | $11 |
| Metoprolol | 20 | $177 | $9 |
| Warfarin | 31 | $162 | $5 |
| Hydrocodone-Acetaminophen | 12 | $153 | $13 |
| Pantoprazole | 12 | $148 | $12 |
| Levothyroxine | 14 | $134 | $10 |
| Lisinopril | 16 | $97 | $6 |
| Prednisone | 16 | $94 | $6 |
| Furosemide | 11 | $44 | $4 |
Money from drug and device companies
$30 in 2022
A payment is not proof that care is biased.
| TerSera Therapeutics | Quzyttir | $30 | 1 payment
|
See the published payment
| TerSera Therapeutics | Meals · 2022-07-27 | Quzyttir | $30 |
Professional record
- NPI
- 1023346459
- Licence
- CA A110705California A110705: Current · expires 2027-10-31
- Trained
- New York Medical College, 2008 · 18 years ago
- Gender
- Female
More record details
- Sole proprietor
- No
- Medicaid ID
- CA 1023346459
- Taxonomy
- Hospitalist (208M00000X); Internal medicine (207R00000X)
- Mailing address
- 325 Distel Cir, Los Altos, CA, 94022
- NPI first listed
- 2009-11-23
- NPI last updated
- 2021-02-16
- NPI record certified
- 2021-02-16
This is when the NPI record was last certified, not a medical board exam.